Torsion-resistant pipe arm structure for screwing engine suspension connecting bolt

Abstract

The utility model discloses an anti-torsion pipe arm structure for tightening engine suspension connecting bolts, which is characterized by comprising a main pipe and a spline shaft, the spline shaft is coaxially arranged in the main pipe, one end of the main pipe is connected with a gear brake joint, the other end of the gear brake joint is connected with a transition flange, the other end of the main pipe is connected with a bearing seat, and one end of the spline shaft extends out of the bearing seat. A flange plate is arranged between the gear brake joint and the main pipe, a first hanging ring is arranged on the flange plate, a spring balancer is arranged on the first hanging ring in a hanging mode, a support is arranged on the lifting sleeve, a second hanging ring is arranged on the support, and the telescopic end of the spring balancer is connected with the second hanging ring through a hook. The lifting device has the advantages that the lifting device is simple in structure and high in torsion resistance, is used for being mounted on an engine assembly workbench in a suspended mode, can ascend and descend freely, assists workers in assembling bolts, saves manpower and improves assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automotive assembly equipment, specifically to an anti-torsion tube arm structure for tightening engine mount connecting bolts. Background Technology

[0002] Currently, when engines are installed on the assembly line, screws in different locations need to be tightened. This can only be done manually by hand, which is time-consuming, labor-intensive, and involves a large workload. When using a tightening gun to tighten bolts, there will be significant vibration, and the tightening gun has a large counter-torque, making it difficult for a person to hold the tightening gun and inconvenient to operate. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this utility model provides an anti-torsion tube arm structure for tightening engine mount connection bolts. It has a simple structure, is used to install a suspension mounting tightening gun, saves manpower, and has an anti-torsion effect.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An anti-torsion tube arm structure for tightening engine mount connection bolts is characterized by comprising a main tube and a splined shaft, the splined shaft being coaxially disposed within the main tube, one end of the main tube being connected to a toothed brake joint, the other end of the toothed brake joint being connected to a transition flange, the other end of the main tube being connected to a bearing seat, one end of the splined shaft extending out of the bearing seat and connected to a lifting sleeve, the bearing seat and the splined shaft being axially slidingly fitted, a flange plate being disposed between the toothed brake joint and the main tube, a first lifting ring being disposed on the flange plate, a spring balancer being suspended on the first lifting ring, a bracket being disposed on the lifting sleeve, a second lifting ring being disposed on the bracket, and the telescopic end of the spring balancer being connected to the second lifting ring via a hook.

[0006] Furthermore, an anti-collision block is provided between the lifting sleeve and the bearing seat, and the anti-collision block is sleeved on the spline shaft.

[0007] Furthermore, the geared brake joint includes a bushing, a fixed gear ring, and an upper flange plate, wherein the fixed gear ring is disposed at the upper end of the bushing, the upper flange plate is disposed at the upper end of the fixed gear ring, a gear seat is rotatably disposed inside the bushing via a bearing, the upper end of the gear seat is located inside the fixed gear ring, a brake tooth block is horizontally slidably disposed on the gear seat, the front end face of the brake tooth block in the direction of movement has external teeth that mesh with the internal teeth of the fixed gear ring, and a cylinder for driving the brake tooth block is disposed on the upper flange plate.

[0008] Furthermore, a cylinder connector is connected to the piston rod of the cylinder, a first connecting rod is hinged to the cylinder connector, and a second connecting rod is hinged to the other end of the first connecting rod. The second connecting rod is hinged to the brake pad.

[0009] The beneficial effects of this utility model include: simple structure, strong anti-torsion effect, used for suspension installation on engine assembly workbench, can be raised and lowered freely, assisting workers in assembling bolts, saving manpower and improving assembly efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a cross-sectional view of the present invention;

[0012] Figure 3 This is a schematic diagram of the toothed brake joint structure of this utility model. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0014] One such Figure 1-3 The engine mount connection bolt tightening anti-torsion tube arm structure shown includes a main tube 1 and a splined shaft 2. The splined shaft 2 is coaxially mounted inside the main tube 1 and can be vertically raised and lowered. One end of the main tube 1 is connected to a toothed brake joint 3, and the other end of the toothed brake joint 3 is connected to a transition flange 4. The other end of the main tube 1 is connected to a bearing seat 5 for guiding and limiting the splined shaft 2. The lower end of the splined shaft 2 extends out of the bearing seat 5 and is connected to a lifting sleeve 6. The bearing seat 5 and the splined shaft 2 slide axially. The lifting sleeve 6 is used to connect the tightening gun fixing clamp. A flange plate 7 is provided between the toothed brake joint 3 and the main tube 1. A first lifting ring 8 is provided on the flange plate 7, and a spring balancer 9 is suspended on the first lifting ring 8. A bracket 10 is provided on the lifting sleeve 6, and a second lifting ring 11 is provided on the bracket 10. The telescopic end of the spring balancer 9 is connected to the second lifting ring 11 through a hook. This structure allows the splined shaft 2 to be vertically raised and lowered freely, and it cannot be rotated when the toothed brake joint 3 is locked, thus providing anti-torsion capability.

[0015] To ensure that the lifting sleeve 6 does not have a rigid collision with the bearing seat 5, an anti-collision block 12 is provided between the lifting sleeve 6 and the bearing seat 5 in this embodiment. The anti-collision block 12 is sleeved on the spline shaft 2. To prevent the spline shaft 2 from falling, an anti-detachment block is connected to the upper end of the spline shaft 2.

[0016] like Figure 2 and 3As shown, the geared brake joint 3 includes a bushing 31, a fixed gear ring 32, and an upper flange plate 33. The fixed gear ring 32 is located at the upper end of the bushing 31, and the upper flange plate 33 is located at the upper end of the fixed gear ring 32. A gear seat 34 is rotatably mounted inside the bushing 31 via a bearing. The upper end of the gear seat 34 is located inside the fixed gear ring 32. A brake tooth block 35 is horizontally slidably mounted on the gear seat 34. The front end face of the brake tooth block 35 in the direction of movement has external teeth that mesh with the internal teeth of the fixed gear ring 32. A cylinder 36 for driving the brake tooth block 35 is mounted on the upper flange plate 33.

[0017] A cylinder connector 37 is connected to the piston rod of cylinder 36. A first connecting rod 38 is hinged to cylinder connector 37, and a second connecting rod 39 is hinged to the other end of the first connecting rod 38. The second connecting rod 39 is hinged to brake pawl 35. This structure can lock and release the brake pawl joint 3 by controlling the extension and retraction of cylinder 36, and can realize the rotation and anti-rotation of the anti-torsion arm, and can resist torsion when tightening with a tightening gun.

[0018] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A torsion-resistant tube arm structure for tightening engine mount connection bolts, characterized in that: The assembly includes a main tube (1) and a splined shaft (2). The splined shaft (2) is coaxially disposed inside the main tube (1). One end of the main tube (1) is connected to a geared brake joint (3), and the other end of the geared brake joint (3) is connected to a transition flange (4). The other end of the main tube (1) is connected to a bearing seat (5). One end of the splined shaft (2) extends out of the bearing seat (5) and is connected to a lifting sleeve (6). The bearing seat (5) and the splined shaft (2) are axially slidingly fitted. A flange plate (7) is disposed between the geared brake joint (3) and the main tube (1). A first lifting ring (8) is disposed on the flange plate (7). A spring balancer (9) is suspended on the first lifting ring (8). A bracket (10) is disposed on the lifting sleeve (6). A second lifting ring (11) is disposed on the bracket (10). The telescopic end of the spring balancer (9) is connected to the second lifting ring (11) through a hook.

2. The anti-torsion tube arm structure for tightening engine mount connection bolts according to claim 1, characterized in that: An anti-collision block (12) is provided between the lifting sleeve (6) and the bearing seat (5), and the anti-collision block (12) is sleeved on the spline shaft (2).

3. The anti-torsion tube arm structure for tightening engine mount connection bolts according to claim 1, characterized in that: The geared brake joint (3) includes a bushing (31), a fixed gear ring (32), and an upper flange plate (33). The fixed gear ring (32) is located at the upper end of the bushing (31), and the upper flange plate (33) is located at the upper end of the fixed gear ring (32). A gear seat (34) is rotatably arranged inside the bushing (31) via a bearing. The upper end of the gear seat (34) is located inside the fixed gear ring (32). A brake block (35) is horizontally slidably arranged on the gear seat (34). The front end face of the brake block (35) in the direction of movement has external teeth that mesh with the internal teeth of the fixed gear ring (32). A cylinder (36) for driving the brake block (35) is arranged on the upper flange plate (33).

4. The anti-torsion tube arm structure for tightening engine mount connection bolts according to claim 3, characterized in that: The piston rod of the cylinder (36) is connected to a cylinder connector (37), and a first connecting rod (38) is hinged to the cylinder connector (37). The other end of the first connecting rod (38) is hinged to a second connecting rod (39), and the second connecting rod (39) is hinged to the brake block (35).

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