CN-224200708-U - Double protection monitoring point position device for vault of existing subway tunnel

CN224200708UCN 224200708 UCN224200708 UCN 224200708UCN-224200708-U

Abstract

The utility model relates to the technical field of subway tunnel monitoring equipment, and provides a double protection monitoring point position device for an existing subway tunnel vault. And a prism body is arranged between the front shell and the rear shell, the front shell is connected with the L-shaped frame through a connecting shaft, and the rotating assembly is used for adjusting the rotating angle of the front shell, so that the angle of the prism body is adjusted. Through the worm gear structure of auto-lock, ensure that the angle after the prism body is adjusted is stable, not influenced by external factors such as wind pressure. The L-shaped frame is connected with the top of the tunnel through the expansion bolts, and the fixing strength is increased by matching with the reinforcing plate, so that connection looseness caused by wind pressure is avoided. In addition, the connecting rod is connected with tunnel top through the mounting panel, provides dual protection, ensures that even when expansion bolts loosen, the device still remains stable. The device realizes the dismantlement of front and back shell through elasticity bayonet lock and draw-in groove cooperation, the change of prism body of being convenient for.

Inventors

Hou Dongsong
FENG MINGLIANG
Tian Maishuo
Ben Hongdong
ZHANG HANG
YIN XIONGFEI

Assignees

北京城建勘测设计研究院有限责任公司

Dates

Publication Date: 20260505
Application Date: 20250624

Claims (6)

1. Be used for existing subway tunnel vault dual protection monitoring point position device, its characterized in that includes: The front shell (1), the rear wall of the front shell (1) is detachably provided with a rear shell (2), and a prism body (3) is arranged between the front shell (1) and the rear shell (2); The novel connecting device comprises an L-shaped frame (4), wherein a connecting shaft (5) is rotatably arranged at the top of the side wall of a vertical rod of the L-shaped frame (4), the other end of the connecting shaft (5) is fixedly connected with the side wall of a front shell (1), a mounting sleeve (7) is fixed on one side of the bottom wall of a cross rod of the L-shaped frame (4), a connecting rod (9) is fixed on the other side of the bottom wall of the cross rod of the L-shaped frame (4), a mounting plate (10) is fixed at the bottom end of the connecting rod (9), and a mounting hole (11) is formed in the mounting plate (10); The rotating assembly (6), the rotating assembly (6) is fixed on the outer wall of the vertical rod of the L-shaped frame (4), and the rotating assembly (6) is used for driving the front shell (1) to rotate.
2. The double protection monitoring point device for the vault of the existing subway tunnel according to claim 1, characterized in that a plurality of elastic clamping rods (12) are symmetrically fixed on the outer edge of the rear wall of the front shell (1), sliding grooves (13) matched with the elastic clamping rods (12) are formed in the front end of the rear shell (2), clamping grooves (14) communicated with the outer wall of the rear shell (2) are formed in the tail end of each sliding groove (13) in a penetrating mode, and the tail ends of the elastic clamping rods (12) are clamped in the corresponding clamping grooves (14).
3. The double protection monitoring point device for the vault of the existing subway tunnel according to claim 2 is characterized in that a limiting groove (15) is formed in the outer wall of the rear shell (2), a movable ring (16) is slidably installed in the limiting groove (15), and an ear plate (17) is symmetrically fixed on the outer side of the movable ring (16).
4. A double protection monitoring point device for an existing subway tunnel vault according to claim 3, characterized in that the clamping groove (14) is communicated with the limit groove (15).
5. The double protection monitoring point device for the vault of the existing subway tunnel according to claim 1, wherein the rotating assembly (6) comprises a rotating shaft (61), one end of the rotating shaft (61) penetrates through one side of the L-shaped frame (4) through a bearing and is fixedly connected with one end of the connecting shaft (5), a worm wheel (62) is fixed on the shaft body of the rotating shaft (61), an installation shell (63) is fixed on the outer wall of the L-shaped frame (4) corresponding to the position of the worm wheel (62), a worm (64) is meshed and connected with the worm wheel (62), the worm (64) is rotatably installed between the inner walls of the installation shell (63), and the top end of the worm (64) penetrates through the top wall of the installation shell (63) through a bearing and is fixedly provided with a knob (65).
6. The double protection monitoring point device for the vault of the existing subway tunnel according to claim 1, wherein a reinforcing plate (8) is symmetrically fixed between the side wall of the installation sleeve (7) and the bottom wall of the L-shaped frame (4).

Description

Double protection monitoring point position device for vault of existing subway tunnel Technical Field The utility model relates to the technical field of subway tunnel monitoring equipment, in particular to a device for double protection and monitoring of point positions of an existing subway tunnel vault. Background The monitoring prism is an optical target for high-precision deformation monitoring in tunnel engineering, and three-dimensional coordinate data of the monitoring prism is obtained in real time by reflecting laser signals emitted by the total station to form a sensing network covering a tunnel structure. The method has the core value of capturing key deformations such as tunnel vault subsidence, side wall convergence (retraction), surface displacement and the like with sub-millimeter precision, and providing data support for construction and operation safety. In the conventional L-shaped right angle prism structure, the prism body is usually fixed on an L-shaped bracket through a set screw knob, and the L-shaped bracket is fixed on the top of the tunnel through an expansion bolt. The structure is simple in design, but has certain defects in practical application. Specifically, when a subway passes through a tunnel at a high speed, a large wind pressure is generated by the rapid running of a train, and the wind pressure acts on a threaded connection for a long time. Under the continuous wind pressure pushing, screw knob connected mode takes place not hard up easily, and then leads to the prism body to take place to rotate, influences its stability and working accuracy, probably can make the prism body drop when serious, causes equipment to become invalid, influences monitoring data's accuracy. In addition, the connection position of the expansion bolts and the L-shaped bracket is short, which makes the connection position easy to shake or loose under the condition of bearing wind pressure for a long time. The weakness of the structural design makes the fixation of the prism body not firm enough, further increases the risk of falling off of the prism body, and cannot effectively ensure the stability and reliability of the monitoring device. Disclosure of utility model In order to overcome the defects, the utility model provides the double protection monitoring point position device for the vault of the existing subway tunnel, which solves the technical problems that the traditional L-shaped right-angle prism in the prior art is easy to loosen in a threaded knob connection mode under the continuous pushing of wind pressure, so that the prism body rotates to influence the stability and working accuracy of the prism body, the prism body can be dropped down to cause equipment failure when serious, the accuracy of monitoring data is influenced, and the connection position of an expansion bolt and an L-shaped bracket is short, so that the connection position is easy to shake or loosen under the condition of bearing the wind pressure for a long time. According to one aspect, at least one embodiment of the present utility model provides a dual protection monitoring point device for an existing subway tunnel vault, including: the front shell and the rear wall of the front shell are detachably provided with a rear shell, and a prism body is arranged between the front shell and the rear shell; The connecting shaft is rotatably arranged at the top of the side wall of the vertical rod of the L-shaped frame, the other end of the connecting shaft is fixedly connected with the side wall of the front shell, a mounting sleeve is fixedly arranged on one side of the bottom wall of the cross rod of the L-shaped frame, a connecting rod is fixedly arranged on the other side of the bottom wall of the cross rod of the L-shaped frame, a mounting plate is fixedly arranged at the bottom end of the connecting rod, and a mounting hole is formed in the mounting plate; The rotating assembly is fixed on the outer wall of the vertical rod of the L-shaped frame and used for driving the front shell to rotate. For example, in the device for double protection and monitoring of a vault of an existing subway tunnel according to at least one embodiment of the present utility model, a plurality of elastic clamping rods are symmetrically fixed on the outer edge of the rear wall of the front shell, a sliding groove matched with the elastic clamping rods is formed at the front end of the rear shell, a clamping groove communicated with the outer wall of the rear shell is formed at the tail end of the sliding groove in a penetrating manner, and the tail ends of the elastic clamping rods are clamped in the corresponding clamping grooves. For example, in the device for double protection and monitoring of a vault of an existing subway tunnel according to at least one embodiment of the present utility model, a limiting groove is provided on an outer wall of the rear shell, a movable ring is slidably mounted in the limiting groove, and an ear pla