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CN-122007770-A - Welding fixture for shell and pull rod rotary support in traction seat plate

CN122007770ACN 122007770 ACN122007770 ACN 122007770ACN-122007770-A

Abstract

The invention provides a welding tool for a shell and a pull rod rotary support in a traction seat plate, and belongs to the technical field of machinery. The welding device solves the problem that welding of the pull rod rotary support at an accurate position is difficult to ensure. The rotary arm is provided with a through hole in the vertical direction near the position of the outer end, the positioning pin assembly is detachably connected in the through hole, the lower end of the positioning pin assembly extends out of the through hole, the lower end of the positioning pin assembly is inserted with an inserting plate, the upper side surface of the inserting plate and the lower side surface of the outer end of the rotary arm form a clamping distance for clamping the rotary support of the pull rod in the vertical direction, the outer end of the rotary arm is fixedly connected with a limiting plate protruding from the lower side surface of the limiting plate, and the clamping distance for clamping the rotary support of the pull rod in the length direction of the rotary arm is formed between the limiting plate protruding from the lower side surface of the rotary arm and the outer side wall of the lower end of the positioning pin assembly. The welding method has the advantages of high positioning precision before welding and the like.

Inventors

  • Yang Feiquan
  • YANG ZHIMIN
  • LIN JICHUN

Assignees

  • 浙江迈兴机械股份有限公司

Dates

Publication Date
20260512
Application Date
20260413

Claims (8)

  1. 1. The utility model provides a welding frock of casing and pull rod swivel mount in traction bedplate, including platform (1) and supporting seat (2) of fixing on platform (1), its characterized in that, welding frock still include swinging boom (4) and locating pin subassembly (5), swinging boom (4) are rectangular cubic, swinging boom (4) level sets up and its inner articulates in the top of supporting seat (2), swinging boom (4) can make its outer end upwards swing around the pin joint, swinging boom (4) are close to outer tip position department and are equipped with through-hole (4 a) along vertical direction, locating pin subassembly (5) detachable connection is in through-hole (4 a) and its lower extreme stretches out outside through-hole (4 a), form the centre gripping interval that is used for following vertical direction centre gripping pull rod swivel mount (16) between the lower extreme downside of swinging boom (4) and the upper side of picture peg (6), limiting plate (7) have been linked firmly in the outer tip of swinging boom (4), the protrusion in the downside of swinging boom (4), protrusion in the lower side of swinging boom (4) is used for forming between the centre gripping interval (16) of locating pin subassembly (5) and the outside of locating pin subassembly (5).
  2. 2. The welding fixture for the shell and the pull rod rotary support in the traction seat plate according to claim 1, wherein the locating pin assembly (5) comprises a locating sleeve (11) and a limiting rod (12), the locating sleeve (11) is located in the through hole (4 a) and the lower end of the locating sleeve extends out of the through hole (4 a), the lower end of the locating sleeve (11) is a sleeved end, the limiting rod (12) penetrates through the locating sleeve (11) and can slide up and down relative to the locating sleeve (11), the inserting plate (6) is inserted into the lower end of the limiting rod (12), a supporting spring (14) is sleeved at the upper end of the limiting rod (12), a blocking head (13) is fixedly connected to the upper end of the limiting rod (12), and two ends of the supporting spring (14) are respectively abutted against the upper end of the locating sleeve (11) and the blocking head (13).
  3. 3. The welding fixture for the shell and the pull rod rotating support in the traction seat plate according to claim 1, wherein the locating pin assembly (5) comprises a locating sleeve (11) and a limiting rod (12), the locating sleeve (11) is located in the through hole (4 a) and the lower end of the locating sleeve extends out of the through hole (4 a), the lower end of the locating sleeve (11) is a sleeved end, the limiting rod (12) penetrates through the locating sleeve (11) and is in threaded connection with the locating sleeve (11), the inserting plate (6) can be inserted out of the lower end of the limiting rod (12), and the upper end of the limiting rod (12) is provided with a non-circular operation part.
  4. 4. A welding fixture for a shell and a pull rod rotary support in a traction seat plate according to claim 2 or 3, characterized in that the through hole (4 a) is a unthreaded hole, the upper end of the positioning sleeve (11) extends out of the through hole (4 a), a blocking shoulder (11 a) is arranged on the outer side of the upper end part of the positioning sleeve (11), the blocking shoulder (11 a) abuts against the upper side surface of the rotary arm (4), an annular shoulder (12 a) is arranged on the outer peripheral side of the lower end part of the limiting rod (12), one end of the inserting plate (6) is U-shaped, and the outer diameter of the annular shoulder (12 a) is smaller than that of the positioning sleeve (11).
  5. 5. A tool for welding a housing and a rotatable support for a drawbar in a traction saddle according to claim 2 or 3, wherein the positioning sleeve (11) is screwed into the through hole (4 a).
  6. 6. The welding fixture for the shell and the pull rod rotating support in the traction seat plate according to claim 1, wherein the limiting plate (7) is L-shaped, the horizontal part of the limiting plate (7) is propped against the upper side of the outer end part of the rotating arm (4), a strip-shaped hole is formed in the horizontal part of the limiting plate (7) along the length direction of the rotating arm (4), and the limiting plate (7) and the rotating arm (4) are fixed through an adjusting screw penetrating through the strip-shaped hole and being in threaded connection with the rotating arm (4).
  7. 7. The welding fixture for the shell and the pull rod rotating support in the traction seat plate according to claim 6, wherein the inner end of the rotating arm (4) is propped against the top surface of the supporting seat (2), the top of the supporting seat (2) is convexly provided with a hinge lug (2 a), the rotating arm (4) is hinged on the hinge lug (2 a) through a hinge shaft, and the inner end surface of the rotating arm (4) is an arc-shaped surface concentric with the hinge shaft.
  8. 8. The welding fixture for the shell and the pull rod rotating support in the traction seat plate according to claim 1, further comprising a pressing cylinder (8) fixed on the platform (1), wherein the pressing cylinder (8) is located on one side of the supporting seat (2), a hinging seat (9) is hinged to the top of the cylinder body of the pressing cylinder (8), a pressing arm (10) is arranged on the hinging seat (9), one end of the pressing arm (10) is hinged to a piston rod of the pressing cylinder (8), the middle part of the pressing arm (10) is hinged to the hinging seat (9), and the piston rod of the pressing cylinder (8) moves upwards to enable the pressing arm (10) to be pressed on the upper side face of the inner end of the rotating arm (4).

Description

Welding fixture for shell and pull rod rotary support in traction seat plate Technical Field The invention belongs to the technical field of machinery, and relates to a welding tool for a shell and a pull rod rotary support in a traction seat plate. Background With the continuous development of the transportation industry, semi-mounted automobiles are increasingly widely used due to large carrying capacity and high carrying capacity. The semi-trailer type automobile comprises a traction automobile and a semi-trailer, and connection, traction and separation are realized between the traction automobile and the semi-trailer through a traction seat. The traction seat is arranged on the traction vehicle, the semitrailer is provided with a traction pin, and the traction vehicle is connected with the semitrailer by butting the traction pin with the traction seat. The traction seat is composed of a traction seat plate and a support, the traction seat plate is hinged to the support, the traction seat plate mainly comprises a shell with a V-shaped mounting opening, a swingable lock hook is arranged at the mounting opening in the shell and is acted by a spring, a handle, a pull rod and a wedge block are further arranged in the shell, the handle is movable, one end of the handle extends out of the shell, one end of the pull rod is hinged to the shell, the other end of the handle is connected with the other end of the pull rod, the wedge block is connected to the middle of the pull rod, and the wedge block pushes against the lock hook to limit the handle to swing under the action of the spring. When the tractor is connected with the semitrailer, the handle is pulled outwards to drive the pull rod to swing so as to separate the wedge block from the lock hook, the lock hook swings under the action of the spring so that the opening direction of the lock hook is consistent with the direction of the mounting opening, the traction pin of the semitrailer is inserted into the opening of the lock hook from the mounting opening, the traction pin can extrude the lock hook to rotate towards the direction overcoming the action of the spring in the process, the opening of the lock hook is opposite to the mounting opening, and finally the handle is pushed inwards to drive the wedge block to swing through the pull rod so as to push the lock hook against the lock hook again, so that the opening is kept in a state opposite to the mounting opening. Wherein, the pull rod is hinged with the shell, and corresponding parts are needed to be arranged in the shell for the hinge connection of the pull rod. As shown in fig. 9, it includes a housing 15 and a pull rod rotating support 16 welded and fixedly connected to the bottom wall of the inner side of the housing 15, wherein the pull rod rotating support 16 is provided with a central hole for hinging the pull rod. Currently, for welding the housing 15 and the pull rod rotary support 16, a worker measures and marks the position on the bottom wall of the inner side of the housing 15 by using a ruler (of course, the measured position is according to a design drawing), and then the pull rod rotary support 16 is abutted against the marked position for welding. However, for the present society to deal with efficiency, it is obvious that it takes a lot of time to make the production efficiency low when each of them performs the position measurement and marking in mass production. At the same time, the bottom wall of the inner side of the housing 15 is actually uneven, i.e. not a flat horizontal surface, which means that there is a large error in the way the usage amount position is marked, and it is difficult to ensure that the tie rod swivel mount 16 is welded accurately to the desired specified position on the design drawing. Disclosure of Invention The invention aims at solving the problems in the prior art, and provides a welding tool for a shell and a pull rod rotary support in a traction seat plate, which solves the problems that the production efficiency is low and the pull rod rotary support is difficult to weld at an accurate position. The aim of the invention can be achieved by the following technical scheme: The utility model provides a welding frock of casing and pull rod swivel mount in traction bedplate, including the platform and fix the supporting seat on the platform, its characterized in that, welding frock still include swinging boom and locating pin subassembly, the swinging boom is rectangular cubic, the swinging boom level sets up and its inner articulates in the top of supporting seat, the swinging boom can make its outer end upwards swing around the pin joint, the swinging boom is close to outer tip position department and is equipped with the through-hole along vertical direction, locating pin subassembly detachable connection is in the through-hole and its lower extreme stretches out outside the through-hole, the lower extreme of locating pin subassembly is inserted and is equ