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CN-122013177-A - Adjustable positioning jack inner hole cold arc cladding equipment

CN122013177ACN 122013177 ACN122013177 ACN 122013177ACN-122013177-A

Abstract

The invention relates to the field of metal surface cladding processing equipment and discloses an adjustable positioning jack inner hole cold arc cladding device which comprises a frame, a cold arc cladding execution assembly and a cold arc cladding execution assembly, wherein a mounting frame is fixed at the top of the frame, a support plate is fixedly connected to one side of the top of the frame, a reference plate is arranged on one side of the support plate, which faces the frame, and a positioning groove is formed in the outer surface of the reference plate. Through the self-adaptive flexible coaxial positioning of the hard positioning cooperation arc-shaped abutting blocks of the positioning pin and the positioning groove, a double-reference accurate positioning system for cladding the inner hole of the jack is constructed, double-constraint positioning of the horizontal axis of the jack to be processed and the coaxial inner hole of the jack is realized, the coaxiality of the cold arc cladding gun and the inner hole of the jack is effectively ensured, and the problems of uneven thickness of a cladding layer, poor metallurgical bonding and the like caused by workpiece positioning deviation are avoided from the structural source.

Inventors

  • HU ZONGWEI
  • YANG SHOUQING
  • TANG ZHIYI
  • ZHENG ZHAOHAI

Assignees

  • 山东中豪液压有限公司

Dates

Publication Date
20260512
Application Date
20260401

Claims (10)

  1. 1. An adjustable positioning jack hole cold arc cladding equipment, which is characterized by comprising: The device comprises a frame (1), wherein an installation frame (2) is fixed at the top of the frame (1), a supporting plate (3) is fixedly connected to one side of the top of the frame (1), a reference plate (5) is installed on the inner side of the supporting plate (3), and a positioning groove (11) is formed in the outer surface of the reference plate (5); The cold arc cladding execution assembly comprises an electric telescopic rod I (4) arranged on the outer side of a supporting plate (3), a driving end fixedly connected with mounting seat (17) of the electric telescopic rod I (4), a cold arc cladding gun (13) is rotatably arranged on the inner side of the mounting seat (17) through an electric rotary table, a spline shaft (25) is fixedly connected to the middle side of the outer part of the cold arc cladding gun (13), a spline sleeve is arranged on the outer side sliding sleeve of the spline shaft (25), a connecting seat (29) is arranged on the outer side of the spline sleeve, a movable sleeve (30) is arranged in the inner side of the connecting seat (29) in a sliding mode, a plurality of connecting arms I (32) are hinged to the outer side of the movable sleeve (30), connecting arms II (33) corresponding to the connecting arms I (32) in number are rotatably arranged on the outer side of the connecting seat (29), and arc-shaped abutting blocks (31) are elastically connected to the end parts of the connecting arms II (33) in a common mode.
  2. 2. The cold arc cladding equipment of adjustable positioning jack hole according to claim 1, further comprising a positioning component, wherein the positioning component comprises a jack (9) to be processed sleeved outside a cold arc cladding gun (13), one end of the jack (9) to be processed, which is close to a reference plate (5), is detachably connected with a base (10), one side of the base (10) facing the reference plate (5) is fixedly connected with two positioning pins (12) matched with a positioning groove (11), the positioning pins (12) are inserted into the positioning groove (11) to position a horizontal axis of the jack (9) to be processed, and the cambered surface of the arc-shaped abutting block (31) abuts against the inner hole wall of the jack (9) to be processed to realize self-adaptive coaxial positioning.
  3. 3. An adjustable positioning jack inner hole cold arc cladding device according to claim 1, characterized in that, an electric telescopic rod three (27) is installed on the outer side of the connecting seat (29), a fixed plate (28) is fixedly connected with the output end of the electric telescopic rod three (27), the inner side of the fixed plate (28) is fixedly connected with the outer side of the movable sleeve (30), the electric telescopic rod three (27) drives the movable sleeve (30) to move so as to drive a connecting arm one (32) and a connecting arm two (33) to swing and adjust the radial extension distance of an arc abutting block (31), a driving gear two (16) is fixedly connected with one side, close to the mounting seat (17), of the outer side of the cold arc cladding gun (13), a plurality of driving gears one (14) meshed with the driving gear two (16) are rotatably installed on the inner side of the mounting seat (17), a reciprocating screw (15) is fixedly connected with the inner middle side of the inner side of each driving gear one (14), one end, far away from the driving gear one end of the driving screw (14), of the reciprocating screw (15) is connected with the inner wall of the mounting seat (17) through a bearing (18), and the outer screw (18) is connected with the reciprocating screw.
  4. 4. The cold arc cladding equipment for the inner hole of the adjustable positioning jack according to claim 3, wherein two connecting cylinders (20) are symmetrically fixed on the outer side of the mounting seat (17), a mounting groove (34) is formed in the connecting cylinder (20), a piston block (37) is slidably connected in the mounting groove (34), a movable rod (19) is fixedly connected on the outer side of the piston block (37), one end, far away from the piston block (37), of the movable rod (19) is fixedly connected with the outer side of the connecting seat (18), and the first driving gear (14) and the reciprocating screw (15) are driven to rotate through a second driving gear (16) when the cold arc cladding gun (13) rotates so as to drive the connecting seat (18) to axially move along the reciprocating screw (15) and drive the movable rod (19) and the piston block (37) to reciprocally slide along the mounting groove (34).
  5. 5. The cold arc cladding equipment for an inner hole of an adjustable positioning jack according to claim 4, wherein the outer surface of the connecting cylinder (20) is sequentially provided with an air inlet pipe (21) and a communicating pipe (22) along the axial direction of the connecting cylinder, the air inlet pipe (21) and the communicating pipe (22) are both communicated with the mounting groove (34), one-way valves are arranged in the air inlet pipe (21) and the communicating pipe (22), the conduction directions of the two one-way valves are opposite, the one-way valve at the communicating pipe (22) only allows gas to enter the mounting groove (34), the one-way valve at the air inlet pipe (21) only allows gas to exit the mounting groove (34), and the cross section area of the connecting cylinder (20) is larger than that of the communicating pipe (22).
  6. 6. The cold arc cladding equipment for the inner hole of the adjustable positioning jack according to claim 5, wherein one end of the communicating pipe (22) far away from the connecting cylinder (20) is communicated with a mounting pipe (26), one end of the mounting pipe (26) far away from the communicating pipe (22) is communicated with an annular pipe (23) sleeved outside the cold arc cladding gun (13), one side of the annular pipe (23) facing the inner hole of the jack (9) to be processed is uniformly communicated with a plurality of negative pressure pipes (24), the outer side of the annular pipe (23) is also communicated with a conveying pipe (36), and one end of the conveying pipe (36) far away from the annular pipe (23) is used for connecting scrap treatment equipment.
  7. 7. The cold arc cladding equipment for the inner hole of the adjustable positioning jack according to claim 1, wherein an electric guide rail (6) is installed at the top of the installation frame (2), the extending direction of the electric guide rail (6) is parallel to the axis direction of the jack (9) to be processed, an installation plate is slidably installed on the outer side of the electric guide rail (6) through an electric sliding block, and an electric telescopic rod II (7) is installed at the bottom of the installation plate.
  8. 8. The cold arc cladding equipment for the inner hole of the adjustable positioning jack according to claim 7, wherein the output end of the electric telescopic rod II (7) faces the jack (9) to be processed and is detachably connected with an ultrasonic thickness measuring device (8), the electric guide rail (6) drives the ultrasonic thickness measuring device (8) to axially move along the jack (9) to be processed, and the electric telescopic rod II (7) drives the ultrasonic thickness measuring device (8) to be close to or far away from the outer wall of the jack (9) to be processed so as to realize external detection of the thickness of a cladding layer of the jack (9) to be processed.
  9. 9. An adjustable positioning jack inner hole cold arc cladding device according to claim 1, characterized in that the connection position of the arc-shaped abutting block (31) and the connecting arm II (33) is provided with a return spring, and the return spring is used for enabling the arc-shaped abutting block (31) to be flexibly abutted against the inner hole wall of the jack (9) to be processed all the time.
  10. 10. The cold arc cladding equipment for the inner hole of the adjustable positioning jack according to claim 1, wherein limiting rings (35) are fixed at two ends of the spline shaft (25), and the outer diameter of the limiting rings (35) is larger than the inner diameter of the spline housing so as to limit the sliding stroke of the spline housing along the spline shaft (25) and prevent the spline housing from being disengaged from the spline shaft (25).

Description

Adjustable positioning jack inner hole cold arc cladding equipment Technical Field The invention relates to the technical field of metal surface cladding processing equipment, in particular to adjustable positioning jack inner hole cold arc cladding equipment. Background The cold arc cladding is used as an advanced metal surface modification and repair technology, and is widely applied to repair and reinforcement operation of the inner hole of the cylinder barrel of the hydraulic jack by virtue of the advantages of high bonding strength of a cladding layer, low heat input quantity, small deformation of a workpiece and the like. The jack is used as a core bearing hydraulic element in the fields of industrial production and engineering construction, the inner hole of the cylinder barrel is easily affected by abrasion, corrosion and the like in the long-term use process, the problem of size precision reduction and surface property degradation occurs, and the wear-resistant and corrosion-resistant cladding layer is prepared on the surface of the inner hole of the jack by a cold arc cladding technology, so that the size precision and the service property of the inner hole of the cylinder barrel can be effectively recovered, the whole service life of the jack is greatly prolonged, and compared with the replacement of a new cylinder barrel, the jack has remarkable economic and resource utilization values. At present, cold arc cladding processing of an inner hole of a jack is finished by depending on general inner hole cladding equipment, and in the practical application process of the equipment, the requirement on the positioning precision of a jack workpiece is extremely high in order to ensure the uniformity and metallurgical bonding quality of a cladding layer. The existing equipment mainly comprises the following two main flow technologies: The first type is a fixed location type cold arc cladding apparatus. The equipment adopts a single hard positioning structure generally, such as the cooperation of a positioning pin and a positioning hole at the end part of a jack, or the clamping of the outside of a jack cylinder body through a V-shaped clamp, so as to realize the positioning and fixing of a workpiece, and then the cold arc cladding gun stretches into an inner hole of the jack for cladding operation. The equipment has the advantages of simple positioning structure and lower manufacturing cost, has certain applicability in batch cladding operation of jacks with single specification, and is applied to partial small jack maintenance enterprises at present. The second type is a simple and easy adjusting positioning type cold arc cladding device. In order to meet the cladding requirement of jacks with different aperture specifications, a simple adjusting mechanism is added to part of equipment on the basis of a fixed positioning structure, such as adjusting the radial position of a positioning block through a bolt, or replacing positioning sleeves with different sizes so as to adapt to the positioning of inner holes of jacks with different specifications. However, in the practical application process of the above prior art, there are still a plurality of technical defects, firstly, the positioning accuracy is insufficient, the adaptability is poor, and it is difficult to ensure the stability of the cladding quality. The fixed positioning type cold arc cladding equipment is fixed in positioning structure, only can adapt to a jack of a single specification, when the jacks with different apertures and different lengths are required to be clad, the whole set of positioning fixtures are required to be replaced, the equipment investment cost is increased, the equipment debugging time is prolonged, the operation efficiency is reduced, meanwhile, the single hard positioning structure is easily influenced by the processing error and the installation deviation of the cylinder body of the jack, the coaxiality of the horizontal axis and the inner hole of the jack to be processed is difficult to be ensured, the cold arc cladding gun and the inner hole are not coaxial, further, the defects of uneven thickness of the cladding layer, poor metallurgical bonding and the like are caused, and the cladding layer is peeled off when serious, so that the repairing and reinforcing effects cannot be achieved. The simple and easy regulation positioning type cold arc cladding equipment is mainly manually regulated, the regulation precision is low, the roundness error and the coaxiality error of the inner hole of the jack cannot be adaptively compensated, the problem of positioning deviation exists, and the cladding quality is affected. In addition, the inner hole of the jack belongs to a closed narrow processing space, a large amount of metal scraps and dust can be generated in the cold arc cladding process, the scrap cleaning structure of the conventional cladding equipment is an external dust collection device which is arranged independ