Adjustable fixing device for eccentric framework

Abstract

The invention relates to an adjustable fixing device for an eccentric framework, which comprises two support frames, a rotating wheel is erected on each support frame, each rotating wheel can rotate on the corresponding support frame around a constant rotating shaft, and each rotating wheel is connected with a fixing structure. The fixing structure is used for fixing the eccentric circuit framework to be wired in the corresponding rotating wheel, and one rotating wheel can be fixed to the corresponding supporting frame through the locking structure so that the eccentric circuit framework can be kept at the needed angle. After the eccentric circuit framework is fixed on the two rotating wheels through the fixing structures, the rotating wheels can be fixed on the supporting frame through the locking structures, so that the eccentric circuit framework can be conveniently fixed at a specific angle, and smooth wiring is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of circuit board mounting and wire harness layout technology, specifically relating to an adjustable fixing device for an eccentric frame. Background Technology

[0002] For eccentric circuit frames, since they do not have the ability to be stably fixed at a specific angle, and in the process of installing circuit boards and laying wire harnesses on the frame, in order to ensure the rationality of the wire harness routing, it is necessary to stabilize it at a specific angle. Therefore, a contradiction is formed between its own structural characteristics and the actual assembly requirements.

[0003] To address this contradiction, existing technologies typically employ simple tools to temporarily clamp and secure the frame, restricting its rotational freedom. However, once this simple securing method fails, the eccentric frame will rapidly rotate under its own weight or external assembly forces. Its trajectory is unpredictable and may pull or scrape the already laid wiring harness, causing damage to the harness and wire cores. It may also pose a safety threat to operators in the work area. Summary of the Invention

[0004] In order to solve all or some of the above problems, the present invention aims to provide an adjustable fixing device for an eccentric frame. The adjustable fixing device for an eccentric frame of the present invention can fix the eccentric circuit frame at the required angle, thereby facilitating the smooth progress of wiring or other operations.

[0005] According to one aspect of the present invention, an adjustable fixing device for an eccentric skeleton is provided, comprising two support frames, each support frame having a rotating wheel mounted thereon, each rotating wheel being configured to rotate on a constant axis on the corresponding support frame, each rotating wheel being connected to a fixing structure for fixing an eccentric circuit skeleton to be wired within the corresponding rotating wheel, wherein one of the rotating wheels can be fixed to the corresponding support frame by a locking structure to maintain the eccentric circuit skeleton at a required angle.

[0006] Furthermore, the two support frames have the same structure. Taking any one of the support frames as an example, the upper end of the support frame is provided with two wheel seats, and the rotating wheel corresponding to the support frame is placed on the two wheel seats so that the rotating wheel can rotate around a constant axis. The rotating wheel cooperates with at least one wheel seat on its corresponding support frame so that the rotating wheel cannot move relative to the support frame.

[0007] Furthermore, the support frame includes two parallel and interconnected side plates. Each side plate of the support frame has slots on its front and rear sides at its upper end. Each slot extends upward to penetrate the corresponding side plate. One of the wheel seats on the support frame is located in one set of slots on the front side, and the other wheel seat on the support frame is located in one set of slots on the rear side. Neither of the two wheel seats can move along the direction of the slots after being mounted on the support frame.

[0008] Furthermore, each of the side plates of the support frame is provided with two slots on the front and rear sides of its upper end. The axle of one of the wheel seats on the support frame is mounted in one of the two sets of slots on the front side, and the axle of the other wheel seat on the support frame is mounted in one of the two sets of slots on the rear side.

[0009] Furthermore, each of the wheel seats includes an axle and a wheel body. The wheel body is fitted onto the corresponding axle. After the two wheel seats are mounted on the support frame, the lower part of the wheel body of each wheel seat is located between the two side plates of the support frame. The diameter of the wheel body is larger than the diameter of the slot, and the height of the wheel body is equal to the distance between the two side plates, so that the wheel body cannot move along the direction of the slot.

[0010] Furthermore, each of the rotating wheels is provided with an annular protrusion, and at least one of the two wheel seats of the support frame corresponding to the rotating wheel is provided with an annular groove on the wheel body. The annular protrusion and the annular groove cooperate to prevent the rotating wheel from moving relative to the support frame.

[0011] Furthermore, the two side plates of each support frame extend downward to be fixed to the same base plate, and a handling handle and a reinforcing rib are connected between the two side plates of each support frame.

[0012] Furthermore, the fixing structure is a fixing set screw, each of the rotating wheels has at least one screw hole, and each screw hole is threaded with a fixing set screw. Each of the rotating wheels has a through hole. By rotating the fixing set screw, the eccentric circuit skeleton to be wired can be fixed in the through hole of the corresponding rotating wheel. Each of the rotating wheels has two screw holes, and the two screw holes are symmetrical about the center of the rotating wheel. Furthermore, the locking structure includes a connecting plate and a fixing pin. The connecting plate is fixedly connected to one of the support frames. The connecting plate has a first pin hole, and the side wall of the rotating wheel corresponding to the support frame has several evenly distributed second pin holes. The rotating wheel is fixed to the support frame by the fixing pin passing through the first pin hole and any one of the second pin holes. The eccentric circuit frame is kept at a corresponding angle by the fixing pin extending into different second pin holes.

[0013] Furthermore, a second pin hole is provided on the side wall of the rotating wheel at 12° intervals; a rotating handle is fixedly connected to the rotating wheel.

[0014] As can be seen from the above technical solution, the adjustable fixing device for an eccentric frame provided by the present invention has the following beneficial effects: This invention uses a fixing structure to fix the eccentric circuit frame onto two rotating wheels, and a locking structure to fix the rotating wheels onto a support frame, thereby facilitating the fixing of the eccentric circuit frame at a specific angle and ensuring smooth wiring. The present invention has two sets of slots on the front and rear sides and the rear side of the side plate, which can be used to adapt to the rotating wheels with different outer diameters, thus improving the versatility of the device; and other rotating wheels can be replaced by removing the current rotating wheel, which has the advantage of convenient rotating wheel replacement. The present invention has a number of second pin holes evenly distributed on one of the rotating wheels, which facilitates the fixing pin and different second pin holes to cooperate, so as to adjust the angle of the eccentric circuit frame and improve the wiring efficiency under multiple angles. The rotating handle of this invention has the advantage of facilitating the rotation of the wheel; the handling handle of this invention makes the device easy to handle and improves the strength of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an adjustable fixing device for an eccentric frame according to an embodiment of the present invention; Figure 2 This is a front view of an adjustable fixing device for an eccentric frame according to an embodiment of the present invention; Figure 3 This is a side view of an adjustable fixing device for an eccentric frame according to an embodiment of the present invention; The attached figures are labeled as follows: support frame 01, side plate 011, slot 0111, handling handle 0112, reinforcing rib 0113, base plate 012, rotating wheel 02, rotating handle 021, second pin hole 022, annular protrusion 023, fixing screw 03, fixing pin 04, connecting plate 041, wheel seat 05, wheel body 051, annular groove 0511, and wheel axle 052. Detailed Implementation

[0016] To better understand the purpose, structure, and function of this invention, the following detailed description of an adjustable fixing device for an eccentric frame, in conjunction with the accompanying drawings, is provided.

[0017] like Figure 1 , Figure 2 and Figure 3 As shown, an adjustable fixing device for an eccentric skeleton according to an embodiment of the present invention is illustrated. It includes two support frames 01, each support frame 01 having a rotating wheel 02 mounted on it. Each rotating wheel 02 is configured to rotate on a constant axis on the corresponding support frame 01. Each rotating wheel 02 is connected to a fixing structure, which is used to fix the eccentric circuit skeleton to be wired within the corresponding rotating wheel 02. One of the rotating wheels 02 can be fixed to the corresponding support frame 01 by a locking structure so that the eccentric circuit skeleton maintains the required angle.

[0018] In this embodiment, the purpose of rotating the wheel 02 on the corresponding support frame 01 with a constant axis is to facilitate rotating the eccentric circuit skeleton fixed on the wheel 02 to the corresponding angle. The fixing structure is used to fix the eccentric circuit skeleton to be wired in the corresponding wheel 02. Each wheel 02 is connected to the fixing structure, so as to facilitate fixing the eccentric circuit skeleton on two wheels 02. The locking structure is used to fix one of the wheels 02 to the corresponding support frame 01. After the wheel 02 is fixed, the eccentric circuit skeleton is fixed accordingly, so as to facilitate wiring the eccentric circuit skeleton between the two wheels 02.

[0019] When fixing the eccentric circuit frame to be wired, the fixing structure is used to fix the eccentric circuit frame on the corresponding rotating wheel 02. After the eccentric circuit frame is fixed on the two rotating wheels 02, the rotating wheels 02 are rotated to keep the eccentric circuit frame at an angle that is convenient for wiring. Finally, the locking structure is used to fix the rotating wheel 02, which has been rotated to a specific angle, on the corresponding support frame 01.

[0020] Regarding the two rotating wheels 02 in this embodiment, both rotating wheels 02 can rotate around a constant axis, thereby ensuring the rotation requirements during wiring or operation; and one of the rotating wheels 02 can be fixed to the support frame 01 by a locking structure, thereby facilitating the fixing of the eccentric circuit frame at a specific angle and facilitating the smooth wiring process.

[0021] The two support frames 01 have the same structure. Taking any one support frame 01 as an example, the upper end of the support frame 01 is provided with two wheel seats 05. The rotating wheel 02 corresponding to the support frame 01 is placed on the two wheel seats 05 so that the rotating wheel 02 can rotate around a constant axis. The rotating wheel 02 cooperates with at least one wheel seat 05 on its corresponding support frame 01 so that the rotating wheel 02 cannot move relative to the support frame 01.

[0022] In this embodiment, the rotating wheel 02 is placed on two wheel seats 05, that is, the two wheel seats 05 support the rotating wheel 02, thereby enabling the rotating wheel 02 to rotate on its own axis. Regarding the wheel seats 05, each support frame 01 is provided with two wheel seats 05. The two wheel seats 05 are, for example, fixed to the support frame 01, or placed on the support frame 01 and limited to not moving relative to the support frame 01.

[0023] Taking any support frame 01 as an example again, the support frame 01 includes two side plates 011 arranged in parallel and connected to each other. Each side plate 011 of the support frame 01 has a slot 0111 on the front and rear sides of its upper end. Each slot 0111 extends upward to penetrate the corresponding side plate 011. One of the wheel seats 05 on the support frame 01 is located in a set of slots 0111 on the front side, and the other wheel seat 05 on the support frame 01 is mounted in a set of slots 0111 on the rear side. After the two wheel seats 05 are mounted on the support frame 01, they cannot move along the direction of the slots 0111.

[0024] In this embodiment, each support frame 01 includes two side plates 011, which are connected to each other to form an integral structure, and the two side plates 011 are arranged in parallel. Each side plate 011 has slots 0111 on its upper front and rear sides, and each slot 0111 extends upwards through the side plate it belongs to. The two slots 0111 on the front side of each support frame 01 form one set, and the two slots 0111 on the rear side form another set. Of the two wheel seats 05 on each support frame 01, one is installed in the front set of slots 0111, and the other is installed in the rear set of slots 0111. The slots 0111 extend upwards through the corresponding side plates 011, thus facilitating the placement and removal of the wheel seat 05 from the slots 0111. Furthermore, after the two wheel seats 05 are mounted in the two sets of slots 0111 of the support frame 01, they cannot move along the direction of the slots 0111, thereby avoiding the movement of the eccentric circuit skeleton during the wiring process and improving the accuracy of the wiring.

[0025] Each side plate 011 of the support frame 01 has two slots 0111 on its front and rear sides. The axle 052 of one of the wheel seats 05 on the support frame 01 is mounted in one of the two sets of slots 0111 on the front side, and the axle 052 of the other wheel seat 05 on the support frame 01 is mounted in one of the two sets of slots 0111 on the rear side.

[0026] In this embodiment, each side plate 011 has two slots 0111 on its front and rear sides. Thus, for the support frame 01 formed by the two side plates 011, there are two sets of slots 0111 on its front side and two sets of slots 0111 on its rear side. Each set of slots 0111 is composed of a slot 0111 on one side plate 011 of the support frame 01 and a corresponding slot 0111 on the other side plate 011.

[0027] For the wheel seat 05, its mounting position is selected according to the diameter of the wheel 02. For example, when the diameter of the wheel 02 is large, the axle 052 of one wheel seat 05 is mounted in the frontmost set of slots 0111, and the axle 052 of the other wheel seat 05 is mounted in the rearmost set of slots 0111. Alternatively, when the diameter of the wheel 02 is small, the axles 052 of two wheel seats 05 are mounted in the two middle sets of slots 0111 respectively. In specific implementations, as needed, the front slots 0111 of each side plate 011 can be set to 3, and the rear slots 0111 of each side plate 011 can also be set to 3.

[0028] In this embodiment, each side plate 011 has two slots 0111 on the front and rear sides of its upper end, which can be used to adapt to rotating wheels 02 of different diameters and to adapt to eccentric circuit skeletons of different specifications, thereby improving the versatility of the device in this embodiment.

[0029] Furthermore, regarding the wheel seat 05, each wheel seat 05 includes an axle 052 and a wheel body 051. The wheel body 051 is fitted onto the corresponding axle 052. After the two wheel seats 05 are mounted on the support frame 01, the lower part of the wheel body 051 of each wheel seat 05 is located between the two side plates 011 of the support frame 01. The diameter of the wheel body 051 is larger than the diameter of the slot 0111, and the height of the wheel body 051 is equal to the distance between the two side plates 011, so that the wheel body 051 cannot move along the direction of the slot 0111.

[0030] Specifically, wheel 051 is fitted onto axle 052. The connection between wheel 051 and axle 052 can be fixed or allow wheel 051 to rotate relative to axle 052. During installation, wheel seat 05 is placed from above into the corresponding slot 0111. After wheel seat 05 is placed in slot 0111, wheel 051 is positioned between the two side plates 011. The diameter of wheel 051 is larger than the diameter of slot 0111 to prevent wheel 051 from passing through slot 0111. To prevent wheel seat 05 from moving along the axis of its axle 052, the height of wheel 051 is equal to the distance between the two side plates 011, thereby reducing the movement of the eccentric circuit frame during wiring and improving wiring accuracy.

[0031] Each of the rotating wheels 02 is provided with an annular protrusion 023. Among the two wheel seats 05 of the support frame 01 corresponding to the rotating wheel 02, at least one wheel seat 05 has an annular groove 0511 on its wheel body 051. The annular protrusion 023 and the annular groove 0511 cooperate to prevent the rotating wheel 02 from moving relative to the support frame 01.

[0032] Specifically, after the wheel seat 05 is confined within the corresponding slots 0111 of the two side plates 011 of each support frame 01, the rotating wheel 02 rests on the two wheel seats 05 of the support frame 01. To prevent the rotating wheel 02 from detaching from the wheel seat 05, in this embodiment, an annular protrusion 023 is provided on the outer wall of each rotating wheel 02. In at least one of the two wheel seats 05 corresponding to the rotating wheel 02, an annular groove 0511 is provided on the wheel body 051. In this embodiment, the rotating wheel 02 is confined on the wheel seat 05 by the cooperation of the annular protrusion 023 and the annular groove 0511, thereby ensuring the smooth progress of wiring. In specific implementation, an annular groove 0511 can also be provided on the wheel body 051 of the two wheel seats 05 corresponding to each rotating wheel 02, thereby facilitating the processing of the wheel seat 05.

[0033] As an alternative, the annular protrusion 023 can be set on the wheel body 051 of the wheel seat 05, and the annular groove 0511 can be set on the rotating wheel 02.

[0034] In the device of this embodiment, each wheel seat 05 is placed in its corresponding set of slots 0111. After the wheel seat 05 is placed in the slot 0111, it cannot move along the axis of the slot 0111 or downwards. The rotating wheel 02 is mounted on the two wheel seats 05 of the same support frame 01. After the rotating wheel 02 is mounted on the wheel seat 05, the rotating wheel 02 and the wheel seat 05 cooperate to make the rotating wheel 02 only rotate and not move relative to the wheel seat 05. After the position is properly adjusted, one of the rotating wheels 02 is fixed by a locking structure, which finally realizes the fixation of the eccentric circuit frame and ensures the smooth progress of wiring. In each support frame 01, the two side plates 011 extend downward to be fixed on the same base plate 012, and a handling handle 0112 and a reinforcing rib 0113 are connected between the two side plates 011 of each support frame 01.

[0035] In this embodiment, the two side plates 011 of each support frame 01 are fixed on the same base plate 012, so that the two side plates 011 of each support frame 01 are connected into an integral structure through the base plate 012. When the side plates 011 extend downward, the two side plates 011 gradually move away from each other, thereby forming a triangular structure between the two side plates 011, thereby improving the stability of the support frame 01.

[0036] Furthermore, the inclusion of the handling handle 0112 facilitates the movement of the support frame 01 to a convenient working position. Specifically, for example, a handling handle 0112 can be connected between the front sides of the two side plates 011 of each support frame 01, and another handling handle 0112 can be connected between the rear sides of the two side plates 011 of each support frame 01, thus enabling two people to easily move one support frame 01. Simultaneously, the handling handle 0112, connected between the two side plates 011, also increases the strength of the support frame 01, solving the problem of deformation due to stress during operation and ensuring the stability of the device.

[0037] Finally, reinforcing ribs 0113 are provided between the two side plates 011 of each support frame 01 as needed. The reinforcing ribs 0113 are also used to improve the strength of the support frame 01 and ensure the stability of the device.

[0038] The fixing structure is a fixing screw 03. Each rotating wheel 02 has at least one screw hole, and a fixing screw 03 is threaded into each screw hole. Each rotating wheel 02 has a through hole. By rotating the fixing screw 03, the eccentric circuit skeleton to be wired can be fixed in the through hole of the corresponding rotating wheel 02.

[0039] The fixing structure in this embodiment is a fixing screw 03. Each rotating wheel 02 is threaded with a fixing screw 03. After the eccentric circuit frame is placed in the through hole of the rotating wheel 02, it is fixed in the rotating wheel 02 by tightening the fixing screw 03.

[0040] In practical implementation, for example, each rotating wheel 02 has two screw holes, which are symmetrical about the center of the rotating wheel 02 to ensure installation reliability. As an alternative, three or more fixing screws 03 can be connected to each rotating wheel 02.

[0041] The locking structure includes a connecting plate 041 and a fixing pin 04. The connecting plate 041 is fixedly connected to one of the support frames 01. The connecting plate 041 has a first pin hole. The side wall of the rotating wheel 02 corresponding to the support frame 01 has several evenly distributed second pin holes 022. The rotating wheel 02 is fixed to the support frame 01 by the fixing pin 04 passing through the first pin hole and any one of the second pin holes 022. The eccentric circuit frame is kept at the corresponding angle by the fixing pin 04 extending into different second pin holes 022.

[0042] In this embodiment, the locking structure includes a fixing pin 04, which passes through a first pin hole and any one of the second pin holes 022 to fix the rotating wheel 02 to the support frame 01.

[0043] In practice, first, place the eccentric circuit frame to be wired into the through holes of the two rotating wheels 02. Then, tighten the fixing screw 03 to fix the eccentric circuit frame in the two rotating wheels 02. Finally, rotate the rotating wheels 02 to make the eccentric circuit frame at a specific angle. Finally, use the fixing pin 04 to fix one of the rotating wheels 02 at this angle. At this time, the eccentric circuit frame will be held at this angle, so wiring and other related operations can be performed. After completing the wiring at the current angle, pull out the fixing pin 04, rotate the rotating wheel 02 again to the next angle, and repeat the above process until all wiring is completed.

[0044] Specifically, for example, a second pin hole 022 is provided on the side wall of the rotating wheel 02 at 12° intervals. The multiple second pin holes 022 in this embodiment allow for angle adjustment without disassembly; it can be easily completed simply by rotating the rotating wheel 02 and inserting the fixing pin 04. The second pin holes 022 are, for example, oblong holes, which facilitates the quick insertion of the fixing pin 04.

[0045] Among them, the rotating wheel 02 with the second pin hole 022 is also fixedly connected to a rotating handle 021. The rotating handle 021 is designed to provide a convenient force application component for manual operation and has the advantage of making it easy to rotate the rotating wheel 02.

[0046] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0047] Furthermore, the terms "a," "two," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An adjustable fixing device for an eccentric frame, characterized in that, It includes two support frames, each of which has a rotating wheel mounted on it. Each rotating wheel is configured to rotate on a constant axis on the corresponding support frame. Each rotating wheel is connected to a fixing structure for fixing the eccentric circuit skeleton to be wired within the corresponding rotating wheel. One of the rotating wheels can be fixed to the corresponding support frame by a locking structure so that the eccentric circuit skeleton maintains the required angle.

2. The adjustable fixing device for an eccentric frame according to claim 1, characterized in that, The two support frames have the same structure. Taking any one of the support frames as an example, the upper end of the support frame is provided with two wheel seats. The rotating wheel corresponding to the support frame is placed on the two wheel seats so that the rotating wheel can rotate around a constant axis. The rotating wheel cooperates with at least one wheel seat on its corresponding support frame so that the rotating wheel cannot move relative to the support frame.

3. The adjustable fixing device for an eccentric frame according to claim 2, characterized in that, The support frame includes two parallel and interconnected side plates. Each side plate has slots on its front and rear sides at its upper end. Each slot extends upward through the corresponding side plate. One of the wheel seats on the support frame is located in a set of slots on the front side, and the other wheel seat is located in a set of slots on the rear side. Neither wheel seat can move along the direction of the slots after being mounted on the support frame.

4. The adjustable fixing device for an eccentric frame according to claim 3, characterized in that, Each of the side plates of the support frame has two slots on its front and rear sides. The axle of one of the wheel seats on the support frame is mounted in one of the two sets of slots on the front side, and the axle of the other wheel seat on the support frame is mounted in one of the two sets of slots on the rear side.

5. The adjustable fixing device for an eccentric frame according to claim 3, characterized in that, Each wheel seat includes an axle and a wheel body. The wheel body is fitted onto the corresponding axle. After the two wheel seats are mounted on the support frame, the lower part of the wheel body of each wheel seat is located between the two side plates of the support frame. The diameter of the wheel body is larger than the diameter of the slot, and the height of the wheel body is equal to the distance between the two side plates, so that the wheel body cannot move along the direction of the slot.

6. The adjustable fixing device for an eccentric frame according to claim 5, characterized in that, Each of the rotating wheels is provided with an annular protrusion, and at least one of the two wheel seats of the support frame corresponding to the rotating wheel is provided with an annular groove on the wheel body. The annular protrusion and the annular groove cooperate to prevent the rotating wheel from moving relative to the support frame.

7. The adjustable fixing device for an eccentric frame according to any one of claims 3-6, characterized in that, The two side plates of each support frame extend downward to be fixed to the same base plate, and a handling handle and a reinforcing rib are connected between the two side plates of each support frame.

8. The adjustable fixing device for an eccentric frame according to claim 1, characterized in that, The fixing structure is a fixing screw. Each of the rotating wheels has at least one screw hole, and a fixing screw is threaded into each screw hole. Each rotating wheel has a through hole. By rotating the fixing screw, the eccentric circuit skeleton to be wired can be fixed in the through hole of the corresponding rotating wheel. Each rotating wheel has two screw holes, and the two screw holes are symmetrical about the center of the rotating wheel.

9. The adjustable fixing device for an eccentric frame according to claim 1, characterized in that, The locking structure includes a connecting plate and a fixing pin. The connecting plate is fixedly connected to one of the support frames. The connecting plate has a first pin hole, and the side wall of the rotating wheel corresponding to the support frame has several evenly distributed second pin holes. The rotating wheel is fixed to the support frame by the fixing pin passing through the first pin hole and any one of the second pin holes. The eccentric circuit frame is kept at a corresponding angle by the fixing pin extending into different second pin holes.

10. The adjustable fixing device for an eccentric frame according to claim 9, characterized in that, The second pin hole is provided at 12° intervals on the side wall of the rotating wheel; a rotating handle is fixedly connected to the rotating wheel.

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