Position adjusting device and mechanical equipment

Abstract

The embodiment of the utility model relates to a position adjusting device and mechanical equipment. The position adjusting device comprises a sliding part, a sliding rail and a rotating shaft. The sliding piece is connected to the sliding rail in a sliding mode. The rotating shaft is rotationally connected to the sliding piece; the rotating shaft extends to form a limiting protrusion, the sliding rail is provided with a plurality of tooth grooves, and when the rotating shaft rotates, the limiting protrusion can be clamped in the tooth grooves or can be separated from the tooth grooves. The rotating shaft is rotated through the position adjusting device, so that the limiting protrusion is separated from the tooth groove to unlock and push the rotating shaft, the rotating shaft drives the sliding piece to move relative to the sliding rail, and therefore the position of the sliding piece relative to the sliding rail is adjusted. When the armrest box or the operation box is arranged on the sliding piece, the position of the armrest box or the operation box relative to the sliding rail can be adjusted so as to meet the operation habit of a user.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of armrest box, and particularly relates to a position adjusting device and mechanical equipment. BACKGROUND

[0002] In a cab of a farm machine or engineering machine, an armrest box or an operation box for a user to operate equipment is generally provided, and switches, handles and the like for controlling various devices are generally distributed on the armrest box or the operation box.

[0003] In the implementation process of the present application, the applicant finds that, in order to meet the operation habits of different users, the position of the armrest box or the operation box needs to be adjusted. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the embodiment of the present application provides a position adjusting device and mechanical equipment, which overcomes the above problems or at least partially solves the above problems.

[0005] According to one aspect of the embodiment of the present application, a position adjusting device is provided, which comprises a sliding piece, a slide rail and a rotating shaft; the sliding piece is slidingly connected to the slide rail; the rotating shaft is rotationally connected to the sliding piece; the rotating shaft extends a limiting protrusion; the slide rail is provided with a plurality of tooth grooves; when the rotating shaft rotates, the limiting protrusion can be clamped in the tooth groove or the limiting protrusion can be separated from the tooth groove.

[0006] In an optional mode, the rotating shaft extends a first abutting piece, and the limiting protrusion is located at the first abutting piece; the sliding piece is provided with two second abutting pieces, and the rotating shaft is rotationally connected to the second abutting pieces; the first abutting piece abuts between the two second abutting pieces.

[0007] In an optional mode, the sliding piece comprises a sliding part and a mounting plate, the sliding part is slidingly connected to the slide rail, and the mounting plate is arranged on the sliding part; the mounting plate is used for arranging the armrest box; the mounting plate is provided with the two second abutting pieces.

[0008] In an optional mode, the position adjusting device further comprises a torsional spring, a coil body of the torsional spring is sleeved on the rotating shaft, and a force arm of the torsional spring abuts against the sliding piece.

[0009] In an optional mode, the position adjusting device further comprises a handle, and the handle is connected to the rotating shaft.

[0010] In an alternative mode, the handle comprises a first connecting arm, a second connecting arm and a fixed shaft; the fixed shaft is fixedly connected with the sliding member; one end of the first connecting arm is rotatably connected with the fixed shaft, and the other end of the first connecting arm is provided with a rolling surface; one end of the second connecting arm is connected with the rotating shaft, and the other end of the second connecting arm is provided with a roller, which is arranged on the rolling surface and can roll along the rolling surface.

[0011] In an alternative mode, the handle further comprises a pulling hand position, which is connected with the first connecting arm.

[0012] In an alternative mode, the pulling hand position comprises a connecting portion and a pulling portion; the connecting portion is connected with the other end of the first connecting arm; the pulling portion is connected with one end of the connecting portion away from the first connecting arm; and the pulling portion extends in a direction away from the first connecting arm.

[0013] In an alternative mode, the slide rail is provided with a through groove, a groove wall of the through groove is recessed to form a sliding groove, the sliding member extends a clamping leg, the clamping leg is located in the sliding groove, and the clamping leg can slide along the sliding groove.

[0014] According to an aspect of the embodiments of the present application, a mechanical device is provided, which comprises the position adjusting device.

[0015] The embodiments of the present application have the following beneficial effects: a position adjusting device is provided, which comprises a sliding member, a slide rail and a rotating shaft; the sliding member is slidingly connected with the slide rail; the rotating shaft is rotatably connected with the sliding member; the rotating shaft extends a limiting protrusion; the slide rail is provided with a plurality of tooth grooves; when the rotating shaft rotates, the limiting protrusion can be clamped in the tooth groove or can be separated from the tooth groove. By rotating the rotating shaft, the limiting protrusion is separated from the tooth groove to be unlocked, the rotating shaft is pushed, the rotating shaft drives the sliding member to move relative to the slide rail, so that the position of the sliding member relative to the slide rail is adjusted; when the handrail box or the operation box is arranged on the sliding member, the position of the handrail box or the operation box relative to the slide rail can be adjusted to meet the operation habit of the user. In addition, when the sliding member is adjusted to a suitable position, the rotating shaft is rotated in the opposite direction, the limiting protrusion on the rotating shaft can be clamped in the tooth groove to lock the position of the sliding member relative to the slide rail. In addition, since the number of tooth grooves is multiple, the limiting protrusion can be locked in any tooth groove, the different positions of the sliding member relative to the slide rail are adjusted, and the different positions of the handrail box or the operation box arranged on the sliding member are adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0016] One or more embodiments are illustrated by way of example in the figures that form a part of this disclosure and which demonstrate aspects of the embodiments. Such illustrations are not meant to limit the application, but to exemplify one or more embodiments of the application. Elements shown in the various illustrations are meant to be examples and are not limited as such unless specifically so limited. The figures are not necessarily to scale, nor are the dimensions of the different illustrating elements.

[0017] Figure 1 is a schematic view of one direction of the position adjusting device provided by an embodiment of the present application;

[0018] Figure 2 is a partial schematic view of another direction of the position adjusting device provided by an embodiment of the present application;

[0019] Figure 3 is a partial schematic view of still another direction of the position adjusting device provided by an embodiment of the present application;

[0020] Figure 4 is a schematic view of yet another direction of the position adjusting device provided by an embodiment of the present application;

[0021] Figure 5 is a schematic view of the first adjusting arm and the second adjusting arm after being rotated of the position adjusting device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer" and similar expressions used in the present specification are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used in the present specification are intended to have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The use of the terms "and / or" includes a combination of one or more of the associated listed items.

[0024] Reference will now be made to Figure 1 and Figure 2The position adjusting device 100 provided by the embodiment of the present application comprises a sliding piece 10, a sliding rail 20 and a rotating shaft 30. The sliding piece 10 is slidingly connected to the sliding rail 20. The rotating shaft 30 is rotatably connected to the sliding piece 10. The rotating shaft 30 extends a limiting protrusion 301. The sliding rail 20 is provided with a plurality of tooth grooves 201. When the rotating shaft 30 rotates, the limiting protrusion 301 can be clamped in the tooth groove 201 or can be separated from the tooth groove 201. Through the position adjusting device 100, the rotating shaft 30 is rotated to make the limiting protrusion 301 separate from the tooth groove 201 to be unlocked. The rotating shaft 30 is pushed, and the rotating shaft 30 drives the sliding piece 10 to move relative to the sliding rail 20, so as to adjust the position of the sliding piece 10 relative to the sliding rail 20. When the handrail box or the operation box is arranged on the sliding piece 10, the position of the handrail box or the operation box relative to the sliding rail 20 can be adjusted to meet the operation habit of the user. In addition, when the sliding piece 10 is adjusted to a suitable position, the rotating shaft 30 is rotated in the opposite direction, and the limiting protrusion 301 on the rotating shaft 30 can be clamped in the tooth groove 201 to lock the position of the sliding piece 10 relative to the sliding rail 20. In addition, since the number of tooth grooves 201 is more than the number of limiting protrusions 301, the limiting protrusion 301 can be locked in any tooth groove 201, so as to adjust the different positions of the sliding piece 10 relative to the sliding rail 20, and to adjust the different positions of the handrail box or the operation box arranged on the sliding piece 10.

[0025] It can be understood that through the reasonable position of the handrail box or the operation box relative to the user, the position of the handrail box or the operation box arranged on the sliding piece 10 relative to the user can be adjusted. Wherein, “front” refers to the front of the user, and “rear” is opposite to “front”.

[0026] It is worth noting that in some embodiments, the number of limiting protrusions 301 is more than the number of tooth grooves 201, so as to improve the stability of the limiting protrusion 301 clamped in the tooth groove 201 and improve the locking effect.

[0027] It is worth noting that in some embodiments, the rotating shaft 30 extends a first abutting piece 302, and the limiting protrusion 301 is located on the first abutting piece 302; the sliding piece 10 is provided with two second abutting pieces 1021, and the rotating shaft 30 is rotationally connected to the second abutting pieces 1021; and the first abutting piece 302 abuts between the two second abutting pieces 1021. Through this arrangement, the rotating shaft 30 rotates between the first abutting piece 302 and the second abutting piece 1021, which can increase the stability of the rotating shaft 30 and avoid the rotating shaft 30 from shaking or deviating during rotation, thereby improving the stability and reliability of the position adjusting device 100. In addition, when the rotating shaft 30 is pushed, the first abutting piece 302 pushes one of the second abutting pieces 1021 to move, thereby facilitating the sliding of the sliding piece 10 relative to the slide rail 20.

[0028] It is worth noting that in some embodiments, the sliding piece 10 includes a sliding part 101 and a mounting plate 102, the sliding part 101 is slidingly connected to the slide rail 20, and the mounting plate 102 is arranged on the sliding part 101 and is used for the arrangement of a handrail box or an operation box; and the mounting plate 102 is provided with two second abutting pieces 1021. Through this arrangement, the handrail box or the operation box can be stably connected to the mounting plate 102, and the position of the handrail box or the operation box can be adjusted along with the sliding of the mounting plate 102 and the sliding part 101 relative to the slide rail 20.

[0029] It is worth noting that in some embodiments, the position adjusting device 100 further includes a torsional spring 40, a coil body of the torsional spring 40 is sleeved on the rotating shaft 30, and a force arm of the torsional spring 40 abuts against the sliding piece 10. Through this arrangement, when the rotating shaft 30 rotates, the torsional spring 40 can provide a certain torsional force, so that the rotating shaft 30 can automatically return to the initial position after rotation. In this way, when the user adjusts the position of the sliding piece 10 and releases the rotating shaft 30, the rotating shaft 30 will automatically rotate back to the locking position where the limiting protrusion 301 is clamped in the tooth groove 201, thereby fixing the position of the sliding piece 10. This arrangement not only improves the degree of automation of the position adjusting device 100, but also makes the user more labor-saving and convenient during operation. In addition, the arrangement of the torsional spring 40 can also increase the stability and reliability of the position adjusting device 100, and reduce the risk of the sliding piece 10 from shaking or deviating during adjustment.

[0030] It is worth noting that in some embodiments, the position adjusting device 100 further includes a handle 50 connected to the rotating shaft 30, so that the user can easily drive the rotating shaft 30 to rotate by holding the handle 50, thereby adjusting the position of the sliding piece 10.

[0031] It is worth noting that in some embodiments, the handle 50 comprises a first connecting arm 501, a second connecting arm 502 and a fixed shaft 503; the fixed shaft 503 is fixedly connected with the sliding piece 10; one end of the first connecting arm 501 is rotationally connected with the fixed shaft 503, and the other end of the first connecting arm 501 is provided with a rolling surface 5011; one end of the second connecting arm 502 is connected with the rotating shaft 30, and the other end of the second connecting arm 502 is provided with a roller 5021, which is arranged on the rolling surface 5011 and can roll along the rolling surface 5011. When the user rotates the first connecting arm 501, the first connecting arm 501 rotates, and the roller 5021 arranged on the second connecting arm 502 rolls on the rolling surface 5011 of the first connecting arm 501, so as to realize smooth transmission between rotation of the handle 50 and rotation of the rotating shaft 30. Through the arrangement of the handle 50, the position of the first connecting arm 501 relative to the rotating shaft 30 can be adjusted, so as to adapt to the holding habits of different users and improve the comfort and convenience of use.

[0032] It can be understood that the fixed shaft 503 fixedly connected with the sliding piece 10 can be fixedly connected through a handrail box or an operation box arranged on the sliding piece 10.

[0033] It is worth noting that in some embodiments, the handle 50 further comprises a pulling hand position 504 connected with the first connecting arm 501, so that the user can rotate the handle 50 more easily by holding the pulling hand position 504, thereby realizing adjustment of the position of the sliding piece 10.

[0034] It is worth noting that in some embodiments, the pulling hand position 504 comprises a connecting portion 5041 and a pulling portion 5042; the connecting portion 5041 is connected with the other end of the first connecting arm 501, and the pulling portion 5042 is connected with one end of the connecting portion 5041 away from the first connecting arm 501 and extends in a direction away from the first connecting arm 501. Through this arrangement, on the one hand, the design of the pulling hand position 504 conforms to the operation habits of the user, so that the user can hold it more comfortably and stably; on the other hand, the bending and extending pulling portion 5042 can facilitate the user to exert force, so that the rotation of the handle 50 is more relaxed and smooth.

[0035] It is worth mentioning that in some embodiments, the sliding rail 20 is provided with a through groove 202, a groove wall of the through groove 202 is recessed to form a sliding groove 2021, the sliding piece 10 extends a clamping leg 1011, the clamping leg 1011 is located in the sliding groove 2021, and the clamping leg 1011 can slide along the sliding groove 2021. Through the arrangement, the cooperation of the clamping leg 1011 and the sliding groove 2021 can not only guide the movement of the sliding piece 10, but also increase the stability of the sliding piece 10 during movement.

[0036] It can be understood that when the sliding piece 10 comprises the sliding part 101 and the mounting plate 102, the sliding part 101 extends the clamping leg 1011.

[0037] It is worth mentioning that in some embodiments, the number of the sliding grooves 2021 is two, the two sliding grooves 2021 are oppositely arranged on the two groove walls of the through groove 202, the number of the clamping legs 1011 is two, and one clamping leg 1011 is located in one sliding groove 2021. Through the arrangement of the two sliding grooves 2021 and the two clamping legs 1011, the stability of the sliding piece 10 relative to the sliding rail 20 is improved.

[0038] Please refer to Figure 2 and Figure 3 , the embodiment of the present application further provides a position adjusting device 100, which comprises a first adjusting arm 1, a first rotating shaft 2, a second adjusting arm 3, a second rotating shaft 4, a supporting piece 5 and an angle adjuster 6; the first rotating shaft 2 and the second rotating shaft 4 are arranged on an external device; one end of the first adjusting arm 1 is rotationally connected with the first rotating shaft 2; one end of the second adjusting arm 3 is rotationally connected with the second rotating shaft 4; the first adjusting arm 1 and the second adjusting arm 3 are arranged at intervals; the other end of the first adjusting arm 1 is rotationally connected with one end of the supporting piece 5; the angle adjuster 6 is arranged between the other end of the second adjusting arm 3 and the other end of the supporting piece 5, the angle adjuster 6 has an adjusting handle 61, and the angle adjuster 6 is used for adjusting an included angle a between the supporting piece 5 and the second adjusting arm 3. Through the position adjusting device 100, the adjusting handle 61 is rotated to adjust the included angle a between the supporting piece 5 and the second adjusting arm 3, and the first adjusting arm 1, the second adjusting arm 3 and the supporting piece 5 as a whole rotate relative to the external device, so that the position of a handrail box or an operation box arranged on the supporting piece 5 can be adjusted to meet the operation habits of different users.

[0039] It is worth mentioning that in some embodiments, the number of the support 5 is two, and the two supports 5 are oppositely arranged on both sides of the first adjusting arm 1 and the second adjusting arm 3. One end of one of the supports 5 is rotatably connected to the other end of the first adjusting arm 1, and the angle adjuster 6 is arranged between the other end of the second adjusting arm 3 and the other end of the one of the supports 5. One end of the other of the supports 5 is rotatably connected to the other end of the first adjusting arm 1, and the other end of the other of the supports 5 is rotatably connected to the other end of the second adjusting arm 3.

[0040] It can be understood that by arranging the first adjusting arm 1, the second adjusting arm 3 and the support 5 relative to the reasonable position of the user, the position adjustment of the support 5, such as the armrest box or the operation box, relative to the user can be realized. Here, "down" is the direction of gravity, and "up" is opposite to "down".

[0041] It is worth mentioning that in some embodiments, the position adjusting device 100 further comprises a tension spring 7, one end of the tension spring 7 is connected to one end of the first adjusting arm 1, and the other end of the tension spring 7 is connected to the other end of the second adjusting arm 3. Through this arrangement, when the angle a between the support 5 and the second adjusting arm 3 is adjusted by rotating the adjusting handle 61, the tension spring 7 can provide a certain tensioning force, so that the first adjusting arm 1 and the second adjusting arm 3 can maintain a certain stability and reliability after adjustment, so that the first adjusting arm 1 and the second adjusting arm 3 can rotate on a plane, so that when the position of the armrest box or the operation box arranged on the support 5 is adjusted, the armrest box or the operation box moves up and down in a plane, reducing the risk of deflection of the armrest box or the operation box.

[0042] It can be understood that please refer to Figure 4 and Figure 5 Since the first rotating shaft 2 and the second rotating shaft 4 are arranged on the external device, it is equivalent to Figure 5 that the points C and D are fixed, and only the positions of the points A and B change when the first adjusting arm 1 and the second adjusting arm 3 rotate, so as to realize the position adjustment of the support 5.

[0043] It is worth mentioning that in some embodiments, please refer to Figure 1 and Figure 4The position adjusting device 100 further comprises a flexible shaft 8, one end of which is connected to the adjusting handle 61. Through this arrangement, the user can indirectly rotate the adjusting handle 61 by pulling the other end of the flexible shaft 8, thereby adjusting the included angle a between the support 5 and the second adjusting arm 3. The design of the flexible shaft 8 not only enables the user to operate without directly contacting the adjusting handle 61, increasing the flexibility of operation, but also adapts to different installation environments and space limitations. In addition, the flexible shaft 8 has a certain flexibility and elasticity, which can absorb and alleviate the impact and vibration to some extent during operation, improving the comfort and stability of user operation. This arrangement provides users with more convenient and diversified operation methods, further improving the practicality and user experience of the position adjusting device 100.

[0044] It is worth noting that in some embodiments, the position adjusting device 100 further comprises a pulling member 9, which is used to rotate the external device, and the other end of the flexible shaft 8 is connected to the pulling member 9. Through this arrangement, the user can pull the flexible shaft 8 by operating the pulling member 9, thereby rotating the adjusting handle 61 and adjusting the included angle a between the support 5 and the second adjusting arm 3.

[0045] It is worth noting that in some embodiments, the position adjusting device 100 further comprises a spring 11, the second adjusting arm 3 is provided with a limiting plate 31, the spring 11 is located between the limiting plate 31 and the adjusting handle 61, and one end of the flexible shaft 8 passes through the limiting plate 31 and the spring 11 in turn and is connected to the adjusting handle 61. Through the arrangement of the spring 11, the user can be provided with a certain tactile feedback, so that the user can more intuitively perceive the rotation state and position of the adjusting handle 61, thereby further improving the accuracy and convenience of operation.

[0046] It is worth noting that in some embodiments, the position adjusting device 100 further comprises a connecting pipe 12, one end of which is connected to the side of the limiting plate 31 away from the spring 11, and the other end of the connecting pipe 12 is used to be arranged on the external device, and the other end of the flexible shaft 8 passes through the connecting pipe 12 and is connected to the pulling member 9. Through the design of the connecting pipe 12, a stable channel is provided for the flexible shaft 8, so that it can smoothly pull the adjusting handle 61. In addition, one end of the connecting pipe 12 is connected to the limiting plate 31, and the other end is fixed to the external device. This design ensures that the flexible shaft 8 will not be disturbed by the external environment during pulling, ensuring the accuracy and reliability of operation.

[0047] It is worth mentioning that, in some embodiments, the pulling member 9 comprises a rotating shaft 92 for being fixed to the external device, and a rotating arm 91 rotatably connected to the rotating shaft 92 at one end, and the other end of the rotating arm 91 is connected to the soft shaft 8. Through this arrangement, the rotating arm 91 can rotate at a certain angle relative to the rotating shaft 92, thereby driving the soft shaft 8 to be pulled or relaxed, realizing the rotating operation of the adjusting handle 61.

[0048] It is worth mentioning that, in some embodiments, the pulling member 9 further comprises an operating hand position 93 connected to the rotating arm 91. Through this arrangement, the user can more easily rotate the rotating arm 91 by holding the operating hand position 93, thereby pulling the soft shaft 8 and rotating the adjusting handle 61, realizing the adjustment of the included angle a between the support 5 and the second adjusting arm 3.

[0049] It is worth mentioning that, in some embodiments, referring to Figure 2 , the operating hand position 93 comprises a connecting portion 931 connected to the other end of the rotating arm 91, and an operating portion 932 connected to the end of the connecting portion 931 away from the rotating arm 91, and the operating portion 932 extends in a direction away from the rotating arm 91. Through this arrangement, on the one hand, the design of the operating hand position 93 conforms to the user's operation habit, so that the user can be more comfortable and stable when holding; on the other hand, the operating portion 932 extending in a direction away from the rotating arm 91 can facilitate the user to exert force, so that the pulling or relaxing of the soft shaft 8 is more relaxed and smooth.

[0050] It is worth mentioning that, the support 5 can also be arranged on the slide rail 20, so that the front and rear position adjustment of the handrail box or operation box arranged on the sliding member 10 can be realized by the sliding member 10, and the up and down position adjustment of the slide rail 20, the sliding member 10 and the handrail box or operation box arranged on the sliding member 10 as a whole can be realized by the support 5, further improving the user experience.

[0051] The embodiments of the present application also provide an embodiment of a mechanical device, which comprises the position adjusting device 100. For the specific structure and functions of the position adjusting device 100, please refer to the above embodiments, which will not be repeated here.

[0052] It should be noted that the preferred embodiments of the present application are described in the specification and its attached drawings, but the present application can be implemented in many different forms and is not limited to the embodiments described in the specification, and these embodiments are not intended to be additional limitations on the content of the present application, and the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Furthermore, each of the above technical features continues to combine to form various embodiments not listed above, which are considered to be within the scope of the present application specification; further, for those skilled in the art, the above description can be improved or changed, and all these improvements and changes shall fall within the scope of protection of the claims of the present application.

Claims

1. A position adjusting device, characterized by, The position adjusting device comprises a sliding member, a sliding rail and a rotating shaft. The sliding member is slidingly connected to the sliding rail. The rotating shaft is rotatably connected to the sliding member. The rotating shaft extends a limiting protrusion, and the sliding rail is provided with a plurality of tooth grooves. When the rotating shaft rotates, the limiting protrusion can be clamped in the tooth groove or can be separated from the tooth groove.

2. The position adjustment device according to claim 1, characterized in that The rotating shaft extends a first abutting member, and the limiting protrusion is located on the first abutting member. The sliding member is provided with two second abutting members, and the rotating shaft is rotatably connected to the second abutting members. The first abutting member abuts between the two second abutting members.

3. The position adjustment device of claim 2, wherein, The sliding member comprises a sliding part and a mounting plate. The sliding part is slidingly connected to the sliding rail, and the mounting plate is arranged on the sliding part.

4. The position adjustment device of claim 1, wherein The mounting plate is used for arranging a handrail box.

5. The position adjustment device of claim 1, wherein The mounting plate is provided with two second abutting members.

6. The position adjustment device of claim 5, wherein The position adjusting device further comprises a torsion spring. The coil body of the torsion spring is sleeved on the rotating shaft. The force arm of the torsion spring abuts against the sliding member. The position adjusting device further comprises a handle.

7. The position adjustment device of claim 6, wherein The handle is connected to the rotating shaft.

8. The position adjustment device of claim 7, wherein, The handle comprises a first connecting arm, a second connecting arm and a fixing shaft.

9. Position adjusting device according to any one of claims 1-8, characterized in that The fixing shaft is fixedly connected to the sliding member.

10. A mechanical device, characterized by One end of the first connecting arm is rotatably connected to the fixing shaft. The other end of the first connecting arm is provided with a rolling surface. One end of the second connecting arm is connected to the rotating shaft. The other end of the second connecting arm is provided with a roller. The roller is arranged on the rolling surface and can roll along the rolling surface. The handle further comprises a pulling hand position. The pulling hand position is connected to the other end of the first connecting arm. The pulling hand position comprises a connecting part and a pulling part. The connecting part is connected to the other end of the first connecting arm. The pulling part is connected to one end of the connecting part away from the first connecting arm. The pulling part is bent and extends away from the first connecting arm. The sliding rail is provided with a through groove. The groove wall of the through groove is recessed to form a sliding groove. The sliding member extends a clamping leg. The clamping leg is located in the sliding groove and can slide along the sliding groove. The position adjusting device comprises the position adjusting device according to any one of claims 1-9.

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