Floating tightening gun device

Abstract

The utility model discloses a floating tightening gun device which comprises a base, a connecting seat, a driving mechanism and a ball head floating sleeve, the connecting seat is rotatably installed on the base, the driving mechanism is arranged on the connecting seat, and the ball head floating sleeve comprises a telescopic spline, a ball head connector and a sleeve. An output shaft of the driving mechanism is connected with the upper end of the telescopic spline, the lower end of the telescopic spline is hinged to the upper end of the ball joint, the lower end of the ball joint is provided with a ball end, the upper end of the sleeve is arranged outside the ball end in a sleeving mode, and the upper end of the sleeve is hinged to the ball end so that the sleeve can rotate relative to the ball end. The lower end of the sleeve is used for being connected with a bolt in a sleeved mode, the sleeve is driven by the driving mechanism to rotate relative to the connecting base so as to tighten the bolt, abrasion, caused by eccentricity, of a hexagonal head of the bolt is reduced, the service life of the bolt is prolonged, vibration of a tightening gun base is reduced, and the service life of equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of assembly equipment, especially tightening gun device, specifically relates to a floating tightening gun device. BACKGROUND

[0002] Pipe pile is often used in soft foundation treatment, due to the soil squeezing effect, pipe pile can squeeze soft soil layer, thereby improving the bearing capacity of soft soil foundation, so it is widely used in the construction industry. The pipe pile is composed of concrete and cage, and the cage is composed of round steel, straight steel, spiral steel and end plate. In the production process, the head and tail plate and the end plate need to be connected for tensioning to ensure the strength of the pipe pile. The head and tail plate and the end plate are mainly connected by bolts, and previously the bolts were tightened by artificial air gun, which is labor-intensive. Later, the process was changed, the head and tail plate and the end plate were first tightened by the equipment, and then the cage was made. However, the current equipment has low tightening success rate, and because the center of the tightening gun and the bolt is inconsistent, the base of the tightening gun vibrates, and the hex head of the bolt is severely worn.

[0003] Therefore, it is necessary to design a floating tightening gun mechanism to ensure that the center of the tightening gun and the bolt is consistent, reduce the vibration of the base of the tightening gun, reduce the wear of the hex head, and improve the tightening success rate of the bolt. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies of the prior art, the utility model provides a floating tightening gun device which reduces the vibration of the base of the tightening gun, reduces the wear of the hex head and improves the tightening success rate of the bolt.

[0005] To achieve the above purpose, the floating tightening gun device adopted by the utility model has the following technical scheme: a base, a connecting seat, a driving mechanism and a ball head floating sleeve, the connecting seat is rotatably installed on the base, the driving mechanism is arranged on the connecting seat, the ball head floating sleeve includes an extension spline, a ball head joint and a sleeve, the output shaft of the driving mechanism is connected with the upper end of the extension spline, the lower end of the extension spline is hinged with the upper end of the ball head joint, the lower end of the ball head joint has a ball head end, the upper end of the sleeve is sleeved outside the ball head end, the upper end of the sleeve is hinged with the ball head end so that the sleeve is rotatable relative to the ball head end, the lower end of the sleeve is used for sleeving the bolt, and the sleeve is rotated relative to the connecting seat by the driving mechanism to tighten the bolt.

[0006] Preferably, the connecting base is hingedly connected to the base through a cross hinge mechanism, the cross hinge mechanism comprising an upper hinge base, a lower hinge base and a hinge block, the upper hinge base being connected to the base, the lower hinge base being connected to the connecting base, the upper hinge base being hingedly connected to the hinge block through a first rotating shaft, the hinge block being hingedly connected to the lower hinge base through a second rotating shaft, the longitudinal axis of the first rotating shaft being perpendicular to the longitudinal axis of the second rotating shaft.

[0007] Preferably, the first rotating shaft is fixed to the hinge block, and the second rotating shaft penetrates through the hinge block and is rotatable relative to the hinge block.

[0008] Preferably, the upper hinge base and the lower hinge base are both in U shape.

[0009] Preferably, a first copper sleeve is arranged between the first rotating shaft and the upper hinge base, and a second copper sleeve is arranged between the second rotating shaft and the lower hinge base.

[0010] Preferably, a first elastic reset mechanism is arranged between the base and the connecting base.

[0011] Preferably, a second elastic reset mechanism is arranged between the ball joint and the sleeve.

[0012] Preferably, the upper end of the ball joint is hingedly connected to the lower end of the telescopic spline through a first pin shaft, and the ball joint is hingedly connected to the upper end of the sleeve through a second pin shaft, so that the sleeve is rotatable around the longitudinal axis of the second pin shaft.

[0013] Preferably, the ball joint is provided with a waist-shaped hole, and the second pin shaft is arranged in the waist-shaped hole, so that the sleeve is rotatable around a direction perpendicular to the longitudinal axis of the second pin shaft.

[0014] Preferably, the driving mechanism comprises a servo motor and a speed reducer connected to the servo motor, and the floating tightening gun device has a variable central axis.

[0015] The floating tightening gun device reduces the wear of the bolt hexagonal head caused by eccentricity, prolongs the service life of the bolt, reduces the vibration of the tightening gun base, and prolongs the service life of the equipment; the ball head floating sleeve ensures that the center of the tightening gun sleeve and the center of the bolt are consistent during tightening, the sleeve is easier to be sleeved into the bolt hexagonal head, the success rate of tightening is improved, and manual intervention is reduced; the processing requirements for the raw material end plate are reduced, the processing efficiency is improved, and the processing cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the embodiments are briefly introduced below.

[0017] Figure 1 This is a first structural schematic diagram of the floating tightening gun device of this utility model.

[0018] Figure 2 This is a second structural schematic diagram of the floating tightening gun device of this utility model.

[0019] Figure 3 This is a perspective view of the floating tightening gun device of this utility model.

[0020] Figure 4 This is a schematic diagram illustrating the working principle of the floating tightening gun device of this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the ball-head floating sleeve in the floating tightening gun device of this utility model.

[0022] Figure 6 This is a schematic diagram of the cross hinge mechanism in the ball-head floating sleeve of this utility model.

[0023] Figure 7 This is a cross-sectional view of the cross hinge mechanism in the ball-head floating sleeve of this utility model. Detailed Implementation

[0024] To more clearly describe the technical content of this utility model, the following description is provided in conjunction with specific embodiments.

[0025] like Figures 1 to 7 The image shows an embodiment of the floating tightening gun device of this utility model, which is used to solve the wear of the bolt hexagonal head caused by the deviation of the end plate material, the eccentricity between the center of the end plate bolt hole and the center of the tightening gun sleeve, and the vibration of the tightening gun base; and to solve the problem of low tightening success rate caused by the deviation of the end plate material, the eccentricity between the center of the end plate bolt hole and the center of the tightening gun sleeve.

[0026] The floating tightening gun device includes a base 1, a connecting seat 4, a drive mechanism, and a ball-head floating sleeve. The connecting seat 4 is rotatably mounted on the base 1, which can be mounted on a moving mechanism to move the floating tightening gun device as needed. The drive mechanism is located on the connecting seat 4. The ball-head floating sleeve includes a telescopic spline 7, a ball joint 801, and a sleeve 8. The output shaft of the drive mechanism is connected to the upper end of the telescopic spline 7, and the lower end of the telescopic spline 7 is hinged to the upper end of the ball joint 801. The lower end of the ball joint 801 has a ball end 803. The upper end of the sleeve 8 is fitted over the ball end 803. The hinge between the upper end of the sleeve 8 and the ball end 803 allows the sleeve 8 to rotate relative to the ball end 803. The lower end of the sleeve 8 is used to fit a bolt. The drive mechanism drives the sleeve 8 to rotate relative to the connecting seat 4 to tighten the bolt. In this embodiment, the driving mechanism includes a servo motor 5 and a reducer 6 connected to the servo motor 5. Alternatively, a pneumatic wrench or a servo tightening gun may be used.

[0027] In the floating tightening gun device of this utility model, a telescopic spline is used, which can transmit torque and ensure that the sleeve descends as the bolt is tightened, thus preventing the sleeve from separating from the bolt.

[0028] like Figures 1 to 2 , Figures 6 to 7 As shown, the connecting seat 4 is hinged to the base 1 via a cross-hing mechanism 2. The cross-hing mechanism 2 includes an upper hinge seat 201, a lower hinge seat 204, and a hinge block 203. The upper hinge seat 201 is connected to the base 1, and the lower hinge seat 204 is connected to the connecting seat 4. The upper hinge seat 201 is hinged to the hinge block 203 via a first rotating shaft 202, and the hinge block 203 is hinged to the lower hinge seat 204 via a second rotating shaft 205. The longitudinal axis of the first rotating shaft 202 is perpendicular to the longitudinal axis of the second rotating shaft 205, forming a cross-hing mechanism, thereby enabling the connecting seat 4 to rotate forward, backward, left, and right. The first rotating shaft 202 is fixed to the hinge block 203, and the second rotating shaft 205 passes through the hinge block 203 and is rotatable relative to the hinge block 203. A nut 206 is provided at the end of the second rotating shaft 205.

[0029] In the floating tightening gun device of this utility model, the floating tightening gun device has a variable central axis. Both the ball-head floating sleeve and the cross hinge mechanism can ensure that the center of the tightening gun sleeve and the center of the bolt are consistent during tightening, tightening vertically downwards and improving the success rate of bolt tightening.

[0030] like Figure 6As shown, both the upper hinge seat 201 and the lower hinge seat 204 are U-shaped.

[0031] like Figure 7 As shown, a first copper sleeve 208 is provided between the first rotating shaft 202 and the upper hinge seat 201 to reduce the frictional force when the first rotating shaft and the upper hinge seat 201 rotate. A second copper sleeve 207 is provided between the second rotating shaft 205 and the lower hinge seat 204 to reduce the frictional force during rotation. During operation, the lower hinge seat can rotate back and forth around the second rotating shaft, and can also rotate left and right along the first rotating shaft with the hinge block 203.

[0032] like Figure 1 and Figure 2 As shown, a first elastic reset mechanism 3 is provided between the base 1 and the connecting seat 4. The first elastic reset mechanism can hold the connecting seat 4 in place, and after tightening, it resets the tightening gun of this utility model.

[0033] like Figure 5 As shown, a second elastic reset mechanism 802, such as a spring, is provided between the ball joint and the sleeve 8 to ensure that the tightening gun returns to its initial state after tightening is completed.

[0034] like Figure 5 As shown, the upper end of the ball joint 801 is hinged to the lower end of the telescopic spline 7 via a first pin 804, and the ball end 803 is hinged to the upper end of the sleeve 8 via a second pin 805, allowing the sleeve 8 to rotate around the longitudinal axis of the second pin 805. The ball end 803 has an oblong hole, and the second pin 805 passes through this oblong hole, allowing the sleeve 8 to rotate around a direction perpendicular to the longitudinal axis of the second pin 805.

[0035] In use, the floating tightening gun device of this utility model first stacks the end plate and head and tail plate assemblies. The tightening gun of this utility model moves to a fixed position with the moving mechanism. The servo motor drives the sleeve to rotate through the reducer and telescopic spline. After the sleeve is fitted into the bolt head, since there is a certain deviation between the bolt center and the initial tightening gun center, the sleeve, telescopic spline, reducer, servo motor, etc., form a certain angle and together with the cross hinge mechanism, form a Z-shaped structure, thereby ensuring that the bolt is tightened vertically downwards. During the tightening process, the telescopic spline extends as the bolt descends. After tightening is completed, the moving mechanism drives the tightening gun mechanism to move to the zero point. At this time, the second spring reset mechanism keeps the tightening gun of this utility model in a vertical state.

[0036] The floating tightening gun device reduces the wear of the hexagonal head of the bolt caused by eccentricity, prolongs the service life of the bolt, reduces the vibration of the tightening gun base, and prolongs the service life of the equipment; the ball head floating sleeve is adopted, the center of the tightening gun sleeve and the center of the bolt are consistent during tightening, the sleeve is more easily sleeved into the hexagonal head of the bolt, the success rate of tightening is improved, and manual intervention is reduced; the processing requirement for the raw material end plate is reduced, the processing efficiency is improved, and the processing cost is reduced.

[0037] In this specification, the utility model has been described with reference to its specific embodiments. However, it is obvious that various modifications and changes can still be made without departing from the spirit and scope of the utility model. Therefore, the specification and drawings should be considered as illustrative rather than restrictive.

Claims

1. A floating power gun device, characterized by, The utility model relates to a floating tightening gun device, including base, connecting seat, drive mechanism and ball head floating sleeve, connecting seat rotatable installation on base, drive mechanism set up on connecting seat, drive mechanism's output shaft with retractable spline's upper end is connected, retractable spline's lower end with ball head joint's upper end articulates, ball head joint's lower end has ball head end, sleeve's upper end sets up in ball head end outside, sleeve's upper end with ball head end articulates makes sleeve relative ball head end rotatable, sleeve's lower end is used for sleeve joint bolt, drive mechanism drives sleeve relative connecting seat rotation to tighten bolt.

2. The floating gun device of claim 1, wherein, Connecting seat through cross hinge mechanism with base articulates, cross hinge mechanism includes upper hinge seat, lower hinge seat and hinge block, upper hinge seat with base is connected, lower hinge seat with connecting seat is connected, upper hinge seat through first rotation axis with hinge block articulates, hinge block through second rotation axis with lower hinge seat articulates, first rotation axis's longitudinal axis with second rotation axis's longitudinal axis is perpendicular.

3. The floating gun device of claim 2, wherein, First rotation axis with hinge block is fixed, second rotation axis passes through hinge block and relative hinge block rotatable.

4. The floating gun device of claim 2, wherein, Upper hinge seat and lower hinge seat are all U-shaped.

5. The floating gun device of claim 2, wherein, First copper bushing is arranged between first rotation axis and upper hinge seat, second copper bushing is arranged between second rotation axis and lower hinge seat.

6. The floating gun device of claim 1, wherein, First elastic reset mechanism is arranged between base and connecting seat.

7. The floating gun device of claim 1, wherein, Second elastic reset mechanism is arranged between ball head joint and sleeve.

8. The floating gun device of claim 1, wherein, Ball head joint's upper end through first pin shaft with retractable spline's lower end articulates, ball head end through second pin shaft with sleeve's upper end articulates, makes sleeve rotatable around second pin shaft's longitudinal axis.

9. The floating gun device of claim 8, wherein, Ball head end sets up waist shape hole, second pin shaft is arranged in waist shape hole, makes sleeve rotatable around the direction perpendicular to second pin shaft's longitudinal axis.

10. The floating gun device of claim 1, wherein, Drive mechanism includes servo motor and with servo motor is connected's speed reducer, floating tightening gun device has variable center axis.

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