Double-opening opposite-knocking type tightening machine

Abstract

The utility model relates to a double-opening opposite-knocking type tightening machine which comprises a base, a tightening gun, a sliding seat and an arm plate. One end of the base is provided with an end plate, and the lower end face is provided with a linear slide rail. The tightening gun is fixed to the end plate, and a sleeve of the tightening gun extends below the lower end face of the base. And the sliding seat is matched with the linear sliding rail, so that the linear sliding rail can longitudinally move relative to the base. And the upper end of the arm plate is matched with the sliding seat through a linear sliding rail structure, so that the arm plate can transversely reciprocate relative to the sliding seat. A sleeve opening is formed in each of the two lateral sides of the lower part of the arm plate in the transverse direction; the side walls of the sleeve opening are ridge surfaces; the position of the arm plate relative to the sliding seat is adjusted, and one sleeve opening can be selectively opposite to the sleeve in the longitudinal direction. According to the utility model, the difficulty in bolt tightening operation caused by relatively narrow operation space at the end part of the bolt, interference and other adverse factors can be overcome, and the tightening operation of the bolt can be completed by using the opposite-knocking type tightening machine.

Description

Technical Field

[0001] The utility model relates to the technical field of impact tightening devices, in particular to a double-opening impact tightening machine, and particularly to an impact tightening machine capable of being used for assembling bolts at the position of a truck axle thrust rod. Background Art

[0002] There are many types of assembly components on a truck chassis, and the structure is complex. In the assembly operation, various bolt tightening operations need to be performed. In the current bolt tightening operation, impact tightening guns are used more frequently. As Figure 5 shown, among the two sleeves on the existing impact tightening gun, one sleeve is fixedly installed at the end of the output shaft of the electric tightening gun as the driving sleeve; the other sleeve is fixedly installed on the arm plate arranged at the end of the connecting rod, and the other end of the connecting rod is connected to the electric tightening gun to form an integral body, so that the ports of the two sleeves are opposite and form a coaxially configured structure. During operation, the sleeve fixed at the end of the output shaft of the electric tightening gun matches the nut of the bolt, and the arm plate arranged on the connecting rod carries the other sleeve to move linearly away from or close to the side of the electric tightening gun, so that the distance between the two sleeves can be adjusted, and the other sleeve can be matched with or disengaged from the nut arranged on the bolt, thus completing the bolt tightening operation process.

[0003] Another example is the patent document with the patent number 2019214258426 and the patent name of an impact bolt tightening reaction arm device. The disclosed technical solution shows that its sleeve one and sleeve two are also configured with the holes in the sleeves coaxially corresponding to each other and opposite left and right. Among them, the sleeve two is carried by the sleeve fixed head to move linearly back and forth relative to the cross beam to realize the adjustment and control of the axial distance between the sleeve one and the sleeve two. After the sleeve one is sleeved on the nut of the bolt, the sleeve two is brought close to the nut installed at the end of the bolt rod, and the nut is sleeved in the barrel cavity of the sleeve two, and then the electric tightening gun is started to complete the bolt tightening operation. Then, moving the sleeve two to the side away from the electric tightening gun can disengage the sleeve two from the nut.

[0004] From the above introduction to the existing impact tightening machines, it can be seen that the two sleeves on the existing impact tightening machines are generally configured in a collinear structure form, and the barrel cavities on the two sleeves can remain in a coaxial state and move relatively closer and relatively farther away. For an operating environment where the peripheral space is relatively open and there are no other structures or components near the positions on both ends or one end of the bolt, using the existing impact (bolt) tightening machine can completely smoothly complete the bolt tightening operation. However, for the situation as Figure 5 shown, at the position on both ends or one end of the bolt, due to the interference of other structures or components, the space near the nut of the bolt or the nut configured becomes narrow (see Figure 5In the positions of the elliptical circles in 5.1 and 5.2, it is not easy for the two sleeves on the existing impact wrench to simultaneously establish a matching relationship with the nut of the bolt and the nut configured on the screw rod. This easily makes the bolt tightening operation difficult in similar situations, and even makes it impossible to complete the bolt tightening operation with the impact wrench, forcing the use of other methods. Summary of the Invention

[0005] The present invention provides a double-opening impact wrench, which can overcome the difficulties caused by adverse factors such as relatively narrow working space and interference at the end position of the bolt, and complete the bolt tightening operation.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a double-opening impact wrench, including:

[0007] A base, with a vertically downward extending end plate provided at one longitudinal end of the base, and a linear slide rail arranged longitudinally on the lower end surface of the base;

[0008] A tightening gun, fixed to the lower end of the end plate and extending the sleeve configured at the output end of the tightening gun below the lower end surface of the base;

[0009] A slide seat, matching with the linear slide rail on the base, enabling the slide seat to reciprocate longitudinally relative to the base;

[0010] An arm plate, the upper end of which is matched with the slide seat through a linear slide rail structure, enabling the arm plate to reciprocate transversely relative to the slide seat; at the lower part of the arm plate, a socket is respectively provided on both lateral sides in the transverse direction; the side wall of the socket is a prism surface; by adjusting the position of the arm plate relative to the slide seat, one of the sockets can be selectively made longitudinally opposite to the sleeve on the tightening gun.

[0011] During operation, after the prism barrel cavity of the sleeve on the tightening gun is matched with the nut of the bolt, adjust the position of the arm plate relative to the slide seat to make one of the sockets linearly opposite to the sleeve in the longitudinal direction, and then drive the slide seat to move longitudinally relative to the base, so that the nut configured on the bolt rod can be sleeved in the corresponding socket on the arm plate. Then, start the tightening gun to perform the bolt tightening operation. After the bolt is tightened, drive the slide seat to move longitudinally relative to the base towards the side away from the end plate, and the nut can be disengaged from the socket.

[0012] Optionally, a lifting arm is fixedly provided on the base, and the connecting arm rod of the lifting arm is located above the upper end surface of the base.

[0013] Optionally, a tensioning part is provided on the base. The tensioning part includes a spring and one end of the spring is fixed on the end plate or fixed on the base at a position close to the end plate, and the other end of the spring matches the slide. In the longitudinal direction, when the slide moves toward the side away from the end plate relative to the base, the tensioning part or the spring can apply a pulling force on the slide to prevent the slide from moving toward the side away from the end plate relative to the base.

[0014] Optionally, a sleeve is provided on one side of the slide seat facing the end plate and the axial direction of the sleeve is extended along the longitudinal direction. One end of the spring matching the slide seat extends into the axial cavity of the sleeve.

[0015] Optionally, a U-shaped arm is fixedly provided on the slide and the opening side of the U-shaped arm is connected to the slide, so that the crossbeam of the U-shaped arm is relatively located above the upper end surface of the base.

[0016] The beneficial effect of the utility model is that the patent can effectively overcome the problem that it is not easy to complete the bolt tightening operation using a knock-type tightening machine when the working space at the end of the bolt is relatively narrow and / or there is interference. By making the arm plate reciprocate relative to the slide seat in the horizontal direction, the relative position between the two sleeves provided on the arm plate and the sleeve installed on the tightening machine is selected and adjusted, so as to achieve the purpose of using the knock-type tightening machine to complete the bolt tightening operation quickly, efficiently and with high quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 , Figure 2 This is a schematic diagram of the three-dimensional structure of the tapping tightening machine involved in this patent.

[0018] Figure 3 This is a schematic diagram of the rear view structure of the tapping tightening machine involved in this patent.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the arm plate.

[0020] Figure 5 This is a state diagram of an existing tapping tightening machine being unable to tighten bolts due to interference at the working position during operation.

[0021] In the figure: 10 base, 11 end plate, 12 linear slide rail, 13 suspension arm, 14 tensioning part;

[0022] 20 electric tightening gun, 21 tightening gun body, 22 sleeve, 23 handle, 24 power supply loading part;

[0023] 30 sliding seat, 31 U-shaped arm;

[0024] 40 arm plate, 41 first set of openings, 42 second set of openings, 43 convex rail portion. DETAILED DESCRIPTION

[0025] The structures, proportions, sizes, etc. shown in the accompanying drawings of the specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the implementation conditions of the present utility model. Therefore, they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. At the same time, terms such as "upper", "lower", "front", "back", "middle", etc. cited in this specification are only for the convenience of clear narration and are not used to limit the scope of implementation of the present utility model. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope of implementation of the present utility model.

[0026] Such as Figures 1 to 4 shown, a double-opening impact wrenching machine includes the following structural features.

[0027] A base 10, at a longitudinal end of the base 10, there is an end plate 11 extending vertically downward; on the lower end surface of the base 10, there is a linear slide rail 12 extending longitudinally; on the upper part of the base 10, a suspension arm 13 is fixedly provided and the connecting arm of the suspension arm 13 is located above the upper end surface of the base 10.

[0028] An electric wrench 20, fixed to the lower end of the end plate 11 and enabling the socket 22 configured at the output shaft end of the electric wrench 20 to extend below the lower end surface of the base 10; the cavity of the socket 22 is a prismatic cavity; the wrench body 21 of the electric wrench 20 is fixedly connected to the end plate 11, and the wrench body 21 and the socket 22 are located on both sides of the end plate 11; a handle 23 and a power loading part 24 are formed on the wrench body 21; a switch for controlling the start of the wrench body is provided on the handle 23.

[0029] A slide block 30, which matches the linear slide rail 12 provided on the base 10, enabling the slide block 30 to reciprocate longitudinally relative to the base 10; a U-shaped arm 31 is fixedly provided on the slide block 30 and the open side of the U-shaped arm 30 is connected to the upper end surface of the slide block 30, and the cross beam of the U-shaped arm 31 is located above the upper end surface of the base 10.

[0030] The arm plate 40 has a convex rail portion 43 formed at its upper end, and the convex rail portion 43 is matched with the linear rail structure provided on the lower end face of the slide base 30, so that the arm plate 40 can reciprocate transversely relative to the slide base 30; at the lower part of the arm plate 40, a socket is respectively provided on both side surfaces in the transverse direction, that is, the first socket 41 on the rear side surface of the arm plate 40 and the second socket 42 on the front side surface shown in the figure; one side of the first socket 41 and the second socket 42 close to the side surface of the arm plate 40 is an open structure, so that the nut or the nut of the bolt can be smoothly inserted into the socket; the inner side walls of the first socket 41 and the second socket 42 are both prism surfaces, incomplete prism surfaces; by adjusting the position of the arm plate 40 relative to the slide base 30 (in the transverse direction), one of the two sockets can be selectively made to be longitudinally opposite to the socket 22 on the electric tightening gun 20.

[0031] During operation, after the prism barrel cavity of the socket 22 on the electric tightening gun 20 is matched with the nut of the bolt, adjust the position of the arm plate 40 relative to the slide base 30 so that the socket on one side is linearly opposite to the socket 22 in the longitudinal direction, and then drive the slide base 30 to move longitudinally relative to the base 10, so that the nut arranged on the bolt rod can be sleeved in the corresponding socket provided on the arm plate 40, and then start the electric tightening gun 20 to perform the tightening operation of the bolt. After the bolt is tightened, drive the slide base 30 to move longitudinally relative to the base 10 towards the side away from the end plate 11, and the nut can be disengaged from the socket.

[0032] A tensioning portion 14 is fixedly provided on the lower end face of the base 10. The tensioning portion 14 includes a spring, and one end of the spring is fixed on the end plate 11, and the other end is connected and matched with a socket fixedly arranged on the slide base 30.

[0033] The axial directions of the spring and the socket both extend along the axial direction, and the spring can extend into the axial cavity of the socket. In this way, by means of the provided socket, the initial distance between the slide base 30 and the end plate 11 in the longitudinal direction can be controlled, that is, in the initial state, most or all of the spring is located in the barrel cavity of the socket. The other end of the spring is connected to the position on the socket close to the slide base 30 or connected to the slide base 30.

[0034] In the longitudinal direction, when the slide base 30 moves relative to the base 10 towards the side away from the end plate 11, the tensioning portion 14 or the spring can apply an elastic tension on the slide base 30 to prevent the slide base 30 from moving relative to the base 10 towards the side away from the end plate 11, which helps to promote the clamping of the bolt and nut to be tightened by the socket 22 provided on the arm plate 40.

[0035] The above embodiments are only illustrative of the principles and effects of the present utility model, and are not intended to limit the present utility model. There are many aspects of the present utility model that can be improved without departing from the overall idea. Persons familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field concerned without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A double-opening knocking tightening machine, comprising a base, a tightening gun and a slide; an end plate extending vertically downward is provided at one longitudinal end of the base, and a linear slide rail arranged longitudinally is provided on the lower end surface of the base; the tightening gun is fixed on the lower end of the end plate and the sleeve arranged at the output end of the tightening gun extends below the lower end surface of the base; the slide is matched with the linear slide rail on the base, so that the slide can reciprocate longitudinally relative to the base; it is characterized in that Also includes arm plates; The upper end of the arm plate is matched with the slide seat through a linear slide rail structure, so that the arm plate can reciprocate laterally relative to the slide seat; At the lower part of the arm plate, a sleeve opening is respectively provided on both side surfaces in the horizontal direction; the side wall of the sleeve opening is an edge surface; By adjusting the position of the arm plate relative to the slide, one of the sleeve openings can be selectively made to be opposite to the sleeve in the longitudinal direction.

2. The double-opening knocking type tightening machine according to claim 1, characterized in that: A suspension arm is fixedly arranged on the base, and a connecting arm rod of the suspension arm is relatively located above the upper end surface of the base.

3. The double-opening knocking type tightening machine according to claim 1 or 2, characterized in that: A tensioning portion is provided on the base; the tensioning portion includes a spring and one end of the spring is fixed on the end plate or fixed at a position on the base close to the end plate, and the other end of the spring matches the slide; when the slide moves relative to the base, the tensioning portion can apply a pulling force on the slide to prevent the slide from moving relative to the base toward the side away from the end plate.

4. The double-opening knocking type tightening machine according to claim 3 is characterized in that: A U-shaped arm is fixedly arranged on the slide seat and the opening side of the U-shaped arm is connected to the slide seat, so that the crossbeam of the U-shaped arm is relatively located above the upper end surface of the base.

5. The double-opening knocking type tightening machine according to claim 3, characterized in that: A sleeve is arranged on one side of the sliding seat facing the end plate, and the axial direction of the sleeve is extended along the longitudinal direction; one end of the spring matching with the sliding seat extends into the axial cavity of the sleeve.

6. The double-opening knocking type tightening machine according to claim 1 or 2, characterized in that: A U-shaped arm is fixedly arranged on the slide seat and the opening side of the U-shaped arm is connected to the slide seat, so that the crossbeam of the U-shaped arm is relatively located above the upper end surface of the base.

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