Tightening counter-force mechanism

Abstract

The utility model discloses a tightening counterforce mechanism which comprises a KBK rigid suspension fixed on a top bearing I-beam of a plant, a suspension pulley at the bottom of the KBK rigid suspension is connected with a balance telescopic arm, and a tightening gun is mounted at the bottom of the balance telescopic arm; a spiral air pipe is further arranged on the side of the KBK rigid suspension, and an air source supplies air to the balance telescopic arm through the spiral air pipe.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle axle assembly technology and relates to a tightening reaction force mechanism. Background Technology

[0002] Currently, tightening guns on axle assembly lines generally use spring balancers for suspension and are moved by operators. Tightening guns are equipped with reaction rods for auxiliary tightening. This mechanism has the following drawbacks: 1. Manually pulling the tightening gun requires resisting the resistance of the spring balancer, leading to significant fatigue during prolonged work; 2. Adjusting the position of the reaction rod while tightening the bolt head is cumbersome and inconvenient; 3. The reaction rod's action surface is irregular, resulting in poor stability and potential safety hazards. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a tightening reaction force mechanism that uses KBK rigid suspension to offset the tightening reaction force and balances the weight through a balancing cylinder, and has the feature of stopping and starting the traction operation at will.

[0004] The technical solution adopted by this utility model is: a tightening reaction mechanism, including a KBK rigid suspension fixed on the load-bearing I-beam of the factory roof, a hanging trolley at the bottom of the KBK rigid suspension connected to a balance telescopic arm, a tightening gun installed at the bottom of the balance telescopic arm; a spiral air pipe is also arranged on the side of the KBK rigid suspension, and an air source supplies air to the balance telescopic arm through the spiral air pipe.

[0005] Furthermore, the KBK rigid suspension uses two parallel Y-direction aluminum rails. Multiple rigid suspension points are set at intervals on the top surface of the Y-direction aluminum rails, which are bolted to the load-bearing I-beams. A hanging trolley is installed at the bottom of the Y-direction aluminum rails, and the X-direction aluminum rails span between the two parallel Y-direction aluminum rails via the hanging trolley. The hanging trolley at the bottom of the X-direction aluminum rails is connected to the balance telescopic arm.

[0006] Furthermore, the aluminum rail in the X direction moves along the aluminum rail in the Y direction.

[0007] Furthermore, the balance telescopic arm includes a Z-axis suspension frame, the top of which is connected to a hanging trolley at the bottom of the KBK rigid suspension; a roller linear slide rail is installed inside the square tube of the Z-axis suspension frame, and a floating connector is connected to the bottom of the roller linear slide rail, which is connected to a tightening gun.

[0008] Furthermore, the slide rail seat of the roller linear slide rail is bolted to the square tube of the Z-axis suspension bracket, and the slide rail guide of the roller linear slide rail is connected to the top of the floating connector, sliding up and down along the Z-axis.

[0009] Furthermore, the balance telescopic boom also includes a lifting balance cylinder, the cylinder barrel of which is fixedly connected to the Z-axis suspension frame, and the cylinder rod of which is fixedly connected to the floating connector.

[0010] Furthermore, the lifting and balancing cylinder is also equipped with a muffler, and the spiral air pipe supplies air to the lifting and balancing cylinder through a precision pressure reducing valve located on the side wall of the Z-axis suspension.

[0011] The beneficial effects of this utility model are:

[0012] 1. The KBK rigid suspension is rigidly connected to the load-bearing I-beams on the top of the factory building, eliminating the need for additional ground support columns, making it easy to avoid other structures on the production line, and optimizing the overall spatial layout.

[0013] 2. The application of KBK rigid suspension and balanced telescopic arm allows the tightening reaction force of the tightening gun to be transmitted to the mounting frame on the top of the workshop through the mechanism, which is reliable and ensures stable and reliable tightening operation.

[0014] 3. The mechanism is connected by trolleys and guide rails in the X, Y and Z directions, which has good rigidity, low resistance, and is easy and labor-saving to move manually.

[0015] 4. By adjusting the precision pressure reducing valve to control the air supply pressure of the lifting and balancing cylinder, the gravity is balanced, and the operator can control the Z-axis lifting and lowering by pulling the tightening gun. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the tightening reaction force mechanism of this utility model;

[0017] Figure 2 This is a schematic diagram of the KBK rigid suspension structure of the tightening reaction mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram of the balanced telescopic arm structure of the tightening reaction force mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the air circuit of the lifting and balancing cylinder of the tightening reaction force mechanism of this utility model.

[0020] In the diagram, 1. Spiral air tube, 2. Rigid suspension point, 3. Y-axis aluminum rail, 4. Suspension trolley, 5. Roller linear slide rail, 6. X-axis aluminum rail, 7. Lifting and balancing cylinder, 8. Floating connector, 9. Tightening gun, 10. Precision pressure reducing valve, 11. Z-axis suspension bracket, 12. Silencer, 13. Air source. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1-3As shown, a tightening reaction mechanism includes a KBK rigid suspension fixed to a load-bearing I-beam on the factory roof. A hanging trolley 4 at the bottom of the KBK rigid suspension is connected to a balance telescopic arm, and a tightening gun 9 is installed at the bottom of the balance telescopic arm. A spiral air pipe 1 is also arranged on the side of the KBK rigid suspension, and an air source 13 supplies air to the balance telescopic arm through the spiral air pipe 1. The connection between the KBK rigid suspension and the load-bearing I-beam on the factory roof ensures that the mechanism has sufficient rigidity to counteract the tightening reaction force, and eliminates the need for additional ground support columns, making it easy to avoid interference with other mechanisms on the production line.

[0023] The KBK rigid suspension uses two parallel Y-direction aluminum rails 3. Multiple rigid suspension points 2 are set at intervals on the top surface of the Y-direction aluminum rails 3. The rigid suspension points 2 are bolted to the load-bearing I-beam. The middle of the rigid suspension points 2 is a screw rod, which ensures reliable connection and counteracts horizontal sway. A hanging trolley 4 is installed at the bottom of the Y-direction aluminum rails 3. The X-direction aluminum rail 6 spans between the two parallel Y-direction aluminum rails 3 through the hanging trolley 4. The hanging trolley 4 at the bottom of the X-direction aluminum rail 6 is connected to the balance telescopic arm.

[0024] The X-direction aluminum rail 6 moves along the Y-direction aluminum rail 3.

[0025] The balanced telescopic arm includes a Z-axis suspension frame 11. The top of the Z-axis suspension frame 11 is connected to the hanging trolley 4 at the bottom of the KBK rigid suspension, meaning the Z-axis suspension frame 11 moves along the X-axis aluminum rail 6. A roller-type linear slide rail 5 is installed inside the square tube of the Z-axis suspension frame 11. A floating connector 8 is connected to the bottom of the roller-type linear slide rail 5, and the floating connector 8 is connected to a tightening gun 9. The lower end of the floating connector 8 has a certain amount of swing in the left, right, front, and rear square positions, which facilitates the adjustment of the attitude of the tightening gun 9 installed below it, and allows for quick engagement of the bolt heads.

[0026] The slide rail seat of the roller linear slide rail 5 is connected to the square tube bolt of the Z-axis suspension bracket 11, and the slide rail guide of the roller linear slide rail 5 is connected to the top of the floating connector 8, sliding up and down along the Z-axis.

[0027] The balance telescopic boom also includes a lifting balance cylinder 7, the cylinder of the lifting balance cylinder 7 is fixedly connected to the Z-axis suspension frame 11, and the cylinder rod of the lifting balance cylinder 7 is fixedly connected to the floating connector 8.

[0028] like Figure 4 As shown, the lifting and balancing cylinder 7 also has a muffler 12. The spiral air pipe 1 supplies air to the lifting and balancing cylinder 7 after passing through the precision pressure reducing valve 10 located on the side wall of the Z-axis suspension frame 11. That is, the air source 13 enters the inlet end of the precision pressure reducing valve 10 through the spiral air pipe 1, and then enters the cylinder of the lifting and balancing cylinder 7 through the spiral air pipe 1 from the outlet end of the precision pressure reducing valve 10, supplying air to the cylinder of the lifting and balancing cylinder 7.

[0029] The weight of the roller linear guide rail (5), the floating connector 8, and the tightening gun 9 needs to be balanced by adjusting the air supply pressure of the lifting balance cylinder 7. By adjusting the air supply pressure of the precision pressure reducing valve 10, the lifting force of the lifting balance cylinder 7 is balanced with the load, and the operator can easily pull it up and down. After the balance pressure is adjusted, when the operator pulls the tightening gun 9 down, the pressure inside the lifting balance cylinder 7 increases, and the precision pressure reducing valve 10 automatically and quickly exhausts air to the balance pressure; when the operator pulls the tightening gun 9 up, the pressure inside the lifting balance cylinder 7 decreases, and the precision pressure reducing valve 10 automatically and quickly replenishes air to the balance pressure; the precision pressure reducing valve 10 responds quickly, and the pulling operation is easy and smooth.

[0030] The working process of this device is as follows:

[0031] 1. The workpiece is transferred to its designated position.

[0032] 2. The operator pulls the tightening gun 9, which drives the balance telescopic arm to move along the X and Y squares of the KBK rigid suspension to the front of the workpiece bolt.

[0033] 3. The traction tightening gun 9 is lowered to a suitable height along the Z-direction of the balance telescopic arm.

[0034] 4. The traction tightening gun moves simultaneously in the X, Y, and Z directions, causing the tightening gun's sleeve to engage with the bolt head.

[0035] 5. Start the tightening gun 9 and press the set torque to complete the bolt tightening.

[0036] 6. The tightening gun 9 moves simultaneously in the X, Y, and Z directions, causing the sleeve of the tightening gun 9 to exit the head of the bolt.

[0037] 7. Move the traction tightening gun simultaneously in the X, Y, and Z directions until it reaches the position of the next bolt, and then tighten the remaining bolts in sequence.

[0038] 8. After the bolts are tightened, the traction tightening gun 9 rises to the highest position along the Z direction of the balance telescopic arm.

[0039] 9. Move the traction tightening gun simultaneously in the X and Y directions to move the mechanism to the standby position, waiting for the next tightening operation.

[0040] The advantages of this device are:

[0041] 1. The KBK rigid suspension is rigidly connected to the load-bearing I-beams on the top of the factory building, eliminating the need for additional ground support columns, making it easy to avoid other structures on the production line, and optimizing the overall spatial layout.

[0042] 2. The application of KBK rigid suspension and balanced telescopic arm allows the tightening reaction force of the tightening gun to be transmitted to the mounting frame on the top of the workshop through the mechanism, which is reliable and ensures stable and reliable tightening operation.

[0043] 3. The mechanism is connected by trolleys and guide rails in the X, Y and Z directions, which has good rigidity, low resistance, and is easy and labor-saving to move manually.

[0044] 4. By adjusting the precision pressure reducing valve to control the air supply pressure of the lifting and balancing cylinder, the gravity is balanced, and the operator can control the Z-axis lifting and lowering by pulling the tightening gun.

Claims

1. A tightening reaction mechanism, characterized in that, The system includes a KBK rigid suspension fixed on the load-bearing I-beam of the factory roof. The hanging trolley (4) at the bottom of the KBK rigid suspension is connected to the balance telescopic arm. A tightening gun (9) is installed at the bottom of the balance telescopic arm. A spiral air pipe (1) is also arranged on the side of the KBK rigid suspension. The air source (13) supplies air to the balance telescopic arm through the spiral air pipe (1).

2. The tightening reaction mechanism according to claim 1, characterized in that, The KBK rigid suspension adopts two parallel Y-direction aluminum rails (3), and multiple rigid suspension points (2) are set at intervals on the top surface of the Y-direction aluminum rails (3). The rigid suspension points (2) are bolted to the load-bearing I-beam. A hanging trolley (4) is installed at the bottom of the Y-direction aluminum rails (3). The X-direction aluminum rail (6) spans between the two parallel Y-direction aluminum rails (3) through the hanging trolley (4). The hanging trolley (4) set at the bottom of the X-direction aluminum rail (6) is connected to the balance telescopic arm.

3. The tightening reaction mechanism according to claim 2, characterized in that, The X-direction aluminum rail (6) moves along the Y-direction aluminum rail (3).

4. The tightening reaction mechanism according to claim 1, characterized in that, The balance telescopic arm includes a Z-axis suspension frame (11), the top of which is connected to the hanging trolley (4) at the bottom of the KBK rigid suspension; a roller linear slide rail (5) is installed inside the square tube of the Z-axis suspension frame (11), a floating connector (8) is connected to the bottom of the roller linear slide rail (5), and the floating connector (8) is connected to the tightening gun (9).

5. A tightening reaction mechanism according to claim 4, characterized in that, The slide rail seat of the roller linear slide rail (5) is connected to the square tube bolt of the Z-axis suspension bracket (11), and the slide rail guide of the roller linear slide rail (5) is connected to the top of the floating connector (8) and slides up and down along the Z-axis.

6. A tightening reaction mechanism according to claim 4, characterized in that, The balance telescopic arm also includes a lifting balance cylinder (7), the cylinder of the lifting balance cylinder (7) is fixedly connected to the Z-axis suspension frame (11), and the cylinder rod of the lifting balance cylinder (7) is fixedly connected to the floating connector (8).

7. A tightening reaction mechanism according to claim 6, characterized in that, The lifting balance cylinder (7) is also equipped with a silencer (12), and the spiral air pipe (1) supplies air to the lifting balance cylinder (7) through the precision pressure reducing valve (10) set on the side wall of the Z-axis suspension frame (11).

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