Double-end internal combustion bolt wrench with interchangeable double arms and adjustable distance

Abstract

The invention provides a double-end internal combustion bolt wrench with two interchangeable arms and an adjustable distance, and belongs to the technical field of railway line maintenance and repair tools. According to the double-end internal combustion bolt wrench with the two interchangeable arms and the adjustable distance, power of the speed change device is transmitted to the transmission shaft through the swing arm, the inner end of the swing arm is hinged to the speed change device, the outer end of the swing arm is connected with the transmission shaft, and when the wrench is used, an operator can pull the swing arm according to the specific using environment and working condition, and the wrench is convenient to operate. The swing arm drives the transmission shaft connected to the outer end of the swing arm to move to a working position, and then drives the position of the sleeve installed on the transmission shaft to move, so that the function of adjusting the positions of the two sleeves on the double-end internal combustion bolt wrench is achieved. The internal combustion bolt wrench with the two interchangeable arms and the adjustable distance can adapt to position changes of bolts and nuts on the inner side and the outer side of a rail. Meanwhile, the two swing arms are hinged to the left side and the right side of the speed change device respectively, the two swing arms can be exchanged, and production and maintenance cost is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of railway line maintenance and repair tools, and in particular relates to a double-headed internal combustion bolt wrench with interchangeable arms and adjustable spacing. Background Technology

[0002] Internal combustion bolt wrenches, especially double-ended internal combustion bolt wrenches, are commonly used for loosening and tightening bolts and nuts on railway sleepers. They are characterized by being lightweight, mobile, efficient, and quick, and are widely used as specialized tools for the daily maintenance and repair of railway lines.

[0003] Taking an internal combustion bolt wrench described in the specification of Chinese invention patent application publication number CN107553382A as an example, it typically includes a frame, an internal combustion engine, a transmission device, a socket, wheels, a socket height adjustment mechanism, and a reversing mechanism. The working principle of the double-ended internal combustion bolt wrench is as follows: the internal combustion engine outputs rotational torque, which is transmitted to the transmission device via a clutch to achieve the required speed; the transmission device then transmits power to the socket, and the rotation of the socket tightens or loosens the bolts and nuts connected to it. Furthermore, combined with the socket height adjustment mechanism and the reversing mechanism, adjusting the socket allows for vertical movement and enables both forward and reverse tightening or loosening of bolts and nuts.

[0004] In existing double-ended internal combustion bolt wrenches, the distance between the two sockets is fixed, limiting their applicability to applications such as... Figure 3 The bolts and nuts on the inner and outer sides of the track are fixed in distance, and the bolts and nuts on the inner and outer sides of the track must be located on a straight line perpendicular to the track.

[0005] The bolts and nuts with varying spacing on both the inner and outer sides of the track, and such as Figure 4 and Figure 5 As shown in the scenario depicted in urban rail transit, where the bolts and nuts on both sides of the track are located on an oblique line (which intersects with the straight line on which the track is located), the existing double-ended internal combustion bolt wrench cannot be adapted. Summary of the Invention

[0006] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a double-headed internal combustion bolt wrench with interchangeable arms and adjustable spacing, to solve the problem that the existing internal combustion bolt wrenches cannot adapt to bolts and nuts with varying spacing on both sides of the track, and in scenarios such as urban rail transit where the bolts and nuts on both sides of the track are located on an oblique line (which intersects the straight line on which the track is located).

[0007] To achieve the above and other related objectives, the present invention provides a double-headed internal combustion bolt wrench with interchangeable arms and adjustable spacing for tightening or loosening bolts and nuts on railway sleepers. It includes an internal combustion engine providing rotational torque, a transmission device connected to the internal combustion engine, a drive shaft driven by the transmission device, and a sleeve that rotates with the drive shaft. It also includes: The swing arm transmits power to the drive shaft through the transmission device. The inner end of the swing arm is hinged to the transmission device, and the outer end of the swing arm is connected to the drive shaft. There are two swing arms, which are respectively hinged to the left and right sides of the transmission device, and the two swing arms can be interchanged.

[0008] Optionally, the swing arm includes a swing arm shaft and a first gear and a second gear connected to each other. The transmission shaft is splinedly connected to the first gear. The swing arm shaft has multiple spline grooves in the circumferential direction. The second gear is connected to any one of the spline grooves on the swing arm shaft. The swing arm shaft is driven to rotate by the output shaft of the transmission device.

[0009] Optionally, the swing arm further includes a third gear and a fourth gear, wherein the first gear, the third gear, the fourth gear and the second gear mesh sequentially.

[0010] Optionally, the swing arm further includes a swing arm cover, in which both the first gear and the second gear are mounted.

[0011] Optionally, it also includes a synchronizing gear assembly, which includes a driving gear and two driven gears. The driving gear is splinedly connected to the output shaft of the transmission device, and the two driven gears mesh on both sides of the driving gear. The two driven gears are splinedly connected to a swing arm shaft.

[0012] As described above, the double-ended internal combustion bolt wrench with interchangeable arms and adjustable spacing according to the present invention has at least the following beneficial effects: This double-arm, interchangeable, adjustable-pitch double-ended internal combustion bolt wrench transmits power from the transmission device to the drive shaft via a swing arm. The inner end of the swing arm is hinged to the transmission device, and the outer end is connected to the drive shaft. During use, the operator can rotate the swing arm according to the specific application scenario, causing the drive shaft connected to the outer end of the swing arm to rotate. This, in turn, moves the position of the sleeve mounted on the drive shaft, thereby adjusting the distance between the two sleeves on the double-ended internal combustion bolt wrench. This allows the double-arm, interchangeable, adjustable-pitch internal combustion bolt wrench to adapt to bolts and nuts with varying spacing on both sides of the track, as well as application scenarios such as urban rail transit where the bolts and nuts on both sides of the track are located on an oblique line (which intersects the straight line containing the track).

[0013] Meanwhile, there are two swing arms, which are hinged to the left and right sides of the transmission device respectively. The two swing arms can be interchanged, which reduces the production cost and maintenance cost of this double-arm interchangeable and adjustable-pitch double-headed internal combustion bolt wrench. Attached Figure Description

[0014] Figure 1 The diagram shown is a schematic diagram of a double-headed internal combustion bolt wrench with interchangeable arms and adjustable spacing according to the present invention.

[0015] Figure 2 The diagram shown is a schematic representation of the swing arm of the present invention.

[0016] Figure 3 The diagram shows bolts and nuts with a fixed spacing on both the inner and outer sides of the track.

[0017] Figure 4 The diagram shows the bolts and nuts on both the inner and outer sides of the track located on a diagonal line.

[0018] Figure 5 Displayed as Figure 4 A magnified view of a portion of the image.

[0019] Component designation explanation Internal combustion engine 1, transmission device 2, drive shaft 3, sleeve 4, rocker arm 5, first gear 51, second gear 52, third gear 53, fourth gear 54, rocker arm shaft 55, rocker arm cover 56, synchronous gear assembly 6, driving gear 61, driven gear 62. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0021] Please see Figures 1 to 2 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0022] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0023] Please see Figure 1 This invention provides a double-ended internal combustion bolt wrench with interchangeable arms and adjustable spacing. Like existing internal combustion bolt wrenches, it is used to tighten or loosen bolts and nuts on railway sleepers. It includes an internal combustion engine 1 providing rotational torque, a transmission device 2 for changing the speed of the internal combustion engine 1, a drive shaft 3 driven by the transmission device 2, and a sleeve 4 rotating with the drive shaft 3. The difference between this double-ended internal combustion bolt wrench with interchangeable arms and adjustable spacing and existing technology is that it further includes: like Figure 1 The swing arm 5 shown is used by the transmission device 2 to transmit power to the drive shaft 3. The inner end of the swing arm 5 is hinged to the transmission device 2, and the outer end of the swing arm 5 is connected to the drive shaft 3. In use, the operator can rotate the swing arm 5 according to the specific usage scenario, which will rotate the drive shaft 3 connected to the outer end of the swing arm 5, thereby moving the position of the sleeve 4 installed on the drive shaft 3. This achieves the purpose of adjusting the distance between the two sleeves 4 on the double-ended internal combustion bolt wrench, so that this double-arm interchangeable and adjustable internal combustion bolt wrench can adapt to bolts and nuts with varying distances on both sides of the track, as well as application scenarios such as in urban rail transit where the bolts and nuts on both sides of the track are located on an oblique line (which intersects the straight line on which the track is located).

[0024] Meanwhile, there are two swing arms 5, which are respectively hinged to the left and right sides of the transmission device 2. The two swing arms 5 can be interchanged, which reduces the production cost and maintenance cost of this double-arm interchangeable and adjustable double-headed internal combustion bolt wrench, and reduces the installation difficulty for workers when replacing the swing arms 5.

[0025] In another implementation, please refer to Figure 2 The swing arm 5 includes a swing arm shaft 55 and a first gear 51 and a second gear 52 connected to each other. The transmission shaft 3 is splinedly connected to the first gear 51. The swing arm shaft 55 has multiple spline grooves in the circumferential direction. The second gear 52 is connected to any one of the spline grooves on the swing arm shaft 55. The swing arm shaft 55 is driven to rotate by the output shaft of the transmission device 2. The operator can adjust the position of the swing arm shaft 55 by moving the swing arm shaft 55 and connecting it to different spline grooves.

[0026] In another implementation, please refer to Figure 2The swing arm 5 also includes a third gear 53 and a fourth gear 54. The first gear 51, the third gear 53, the fourth gear 54 and the second gear 52 mesh in sequence. Compared with two gears, the transmission mode of the swing arm 5 composed of four gears can obtain more selectable transmission ratios and steering, and realize complex functions such as speed change and steering.

[0027] In another implementation, please refer to Figure 2 The swing arm 5 also includes a swing arm cover 56, in which the first gear 51, the second gear 52, the third gear 53 and the fourth gear 54 are all installed; the swing arm cover 56 provides protection for the aforementioned gears.

[0028] In other implementations, such as Figure 2 As shown, the synchronous gear assembly 6 includes a driving gear 61 and two driven gears 62. The driving gear 61 is splinedly connected to the output shaft of the transmission device 2, and the two driven gears 62 are respectively meshed on both sides of the driving gear 61. The two driven gears 62 are splinedly connected to a rocker arm shaft 55. That is, this embodiment provides a specific structural form in which a transmission device 2 simultaneously drives two adjustable-pitch sleeves 4.

[0029] In summary, this invention transmits power from the transmission device 2 to the drive shaft 3 via a swing arm 5. The inner end of the swing arm 5 is hinged to the transmission device 2, and the outer end of the swing arm 5 is connected to the drive shaft 3. During use, the operator can rotate the swing arm 5 according to the specific application scenario, causing the drive shaft 3 connected to the outer end of the swing arm 5 to rotate, thereby moving the position of the sleeve 4 mounted on the drive shaft 3. This achieves the purpose of adjusting the distance between the two sleeves 4 on the double-ended internal combustion bolt wrench, enabling this double-arm interchangeable and adjustable-pitch internal combustion bolt wrench to adapt to bolts and nuts with varying spacing on both sides of the track, as well as application scenarios such as in urban rail transit where the bolts and nuts on both sides of the track are located on an oblique line (which intersects the straight line containing the track). Furthermore, the invention has two swing arms 5, hinged to the left and right sides of the transmission device 2 respectively. The interchangeable design of the two swing arms 5 reduces the production cost and maintenance expenses of this double-arm interchangeable and adjustable-pitch internal combustion bolt wrench. Therefore, this invention effectively overcomes the shortcomings of the prior art and has high industrial application value.

[0030] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A double-headed internal combustion bolt wrench with interchangeable arms and adjustable spacing, used for tightening or loosening bolts and nuts on railway sleepers, comprising an internal combustion engine providing rotational torque, a transmission device connected to the internal combustion engine, a drive shaft driven by the transmission device, and a sleeve rotating with the drive shaft, characterized in that, Also includes: The swing arm transmits power to the drive shaft through the transmission device. The inner end of the swing arm is hinged to the transmission device, and the outer end of the swing arm is connected to the drive shaft. There are two swing arms, which are respectively hinged to the left and right sides of the transmission device, and the two swing arms can be interchanged.

2. The double-arm interchangeable, adjustable-gap double-headed internal combustion bolt wrench according to claim 1, characterized in that: The swing arm includes a swing arm shaft and a first gear and a second gear connected to each other. The transmission shaft is splinedly connected to the first gear. The swing arm shaft has multiple spline slots in the circumferential direction. The second gear is connected to any one of the spline slots on the swing arm shaft. The swing arm shaft is driven to rotate by the output shaft of the transmission device.

3. A double-headed internal combustion bolt wrench with interchangeable arms and adjustable spacing according to claim 2, characterized in that: The swing arm also includes a third gear and a fourth gear, and the first gear, the third gear, the fourth gear and the second gear mesh in sequence.

4. A double-headed internal combustion bolt wrench with interchangeable arms and adjustable spacing according to claim 2, characterized in that: The swing arm also includes a swing arm cover, in which both the first gear and the second gear are installed.

5. A double-headed internal combustion bolt wrench with interchangeable arms and adjustable spacing according to claim 2, characterized in that, Also includes: A synchronous gear assembly, comprising a driving gear and two driven gears, wherein the driving gear is splinedly connected to the output shaft of the transmission device, and the two driven gears mesh with the two sides of the driving gear respectively; The two driven gears are respectively splined to one of the rocker arm shafts.

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