Air cylinder auxiliary lifting device and body builder

Abstract

The utility model discloses an air cylinder auxiliary lifting device and fitness equipment, and relates to the technical field of fitness equipment. The air cylinder auxiliary lifting device comprises a movable assembly and a transmission assembly. The movable assembly is used for providing upward pulling force for a user and comprises an auxiliary rope, an air cylinder and an air storage tank, the air cylinder and the air storage tank are fixedly arranged on the body builder, an air storage tank pipeline is communicated with one of a rodless cavity and a rod cavity of the air cylinder, and an air port of the other one of the rod cavity and the rodless cavity of the air cylinder is communicated with the external environment of the air cylinder. One end of the auxiliary rope is connected with the free end of the piston rod; the transmission assembly is arranged at the top of the body builder, and the other end of the auxiliary rope bypasses the transmission assembly and extends towards the bottom so as to be connected to the two sides of the waist of a user. The air cylinder auxiliary lifting device can provide upward pulling force for a user in the climbing process, the training intensity of the user is reduced, and the use limitation of fitness equipment is broken through.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, and more specifically, to a cylinder-assisted lifting device. In addition, the utility model also relates to a fitness equipment comprising the cylinder-assisted lifting device. Background Art

[0002] Some fitness equipment currently on the market, such as rope climbing machines or pull-up trainers, usually require users to overcome their own weight to climb up or push and pull movements, etc. The training intensity is extremely high. Therefore, this type of fitness equipment may not be suitable for beginners, heavy people, and non-professionals, and may also cause users to suffer injuries such as muscle strain.

[0003] In summary, how to break through the limitations of the use of fitness equipment is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a cylinder-assisted lifting device, which can provide an upward pulling force for the user during the climbing process, reduce the user's training intensity, and break through the use limitations of fitness equipment.

[0005] Another object of the utility model is to provide a fitness equipment including the above-mentioned cylinder auxiliary lifting device.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A cylinder-assisted lifting device, comprising:

[0008] The movable assembly is used to provide an upward pulling force for the user, comprising an auxiliary rope, a cylinder and an air tank, wherein the cylinder and the air tank are fixedly arranged on the fitness equipment, the air tank pipeline is connected to one of the rodless cavity and the rod cavity of the cylinder, the air port of the other of the rod cavity and the rodless cavity of the cylinder is connected to the external environment of the cylinder, and the auxiliary rope is connected to the free end of the piston rod;

[0009] The transmission component is arranged on the top of the fitness equipment, and the free end of the auxiliary rope passes around the transmission component and extends to the bottom to be connected to both sides of the waist of the user.

[0010] Preferably, the movable component further comprises a sliding member, and the sliding member is rotatably disposed on a sliding seat, the sliding seat is fixedly disposed on the free end of the piston rod, and the auxiliary rope is wound around the circumference of the sliding member.

[0011] Preferably, it also includes a locking assembly for locking the initial position of the piston rod.

[0012] Preferably, the locking assembly comprises a plug rod and a support rod, the support rod is fixedly arranged on the fitness device, and a piston hole is provided at a position of the support rod opposite to the cylinder so that the piston rod can movably pass through;

[0013] The side wall of the piston hole has a first plug hole, the sliding seat or the piston rod has a second plug hole parallel to the first plug hole, and the plug rod can be inserted into or pulled out of the first plug hole and the second plug hole.

[0014] Preferably, the support rod comprises a rod-shaped structure and an inserting plate, the inserting plate is located at vertical sides opposite to the rod-shaped structure, the first inserting hole is located at a portion of the inserting plate protruding from the rod-shaped structure, and the first inserting hole passes through two of the inserting plates.

[0015] Preferably, the side wall of the gas storage tank has a gas port for gas to flow into or out of the gas storage tank, and the gas port of the gas storage tank is provided with a plug that can be inserted or pulled out.

[0016] Preferably, it further comprises a frame member detachably arranged on the fitness equipment bracket, the cylinder, the gas storage tank and the locking assembly are all arranged on the frame member, and the frame member has a space for the movable pulley and the piston rod to move;

[0017] And / or, the top edge of the frame member has a first through hole and a second through hole for the auxiliary rope to pass longitudinally, and the connecting direction of the first through hole and the second through hole is coplanar with the tangent direction of the bottom end of the movable pulley along the longitudinal direction.

[0018] Preferably, the transmission assembly comprises a swing wheel, the swing wheel is rotatably mounted on a mounting seat, and the mounting seat is rotatably mounted on the fitness device.

[0019] A fitness equipment comprises the cylinder-assisted lifting device provided by any one of the above items.

[0020] The utility model provides a cylinder auxiliary lifting device, wherein a movable component is arranged at the bottom of a fitness equipment bracket, and an auxiliary rope in the movable component guides the auxiliary rope to both sides of the waist of a user through a transmission component located at the top of the fitness equipment. The cylinder is arranged longitudinally, and utilizes the ascending or descending movement of a piston rod to provide an upward pulling force to the user through the auxiliary rope.

[0021] When in use, first tie the free ends of the auxiliary rope to both sides of the user's waist. When climbing, the piston rod of the cylinder moves downward and provides an upward pulling force for the user. When falling, the piston rod of the cylinder moves upward, returning to the initial position and providing an upward pulling force for the user.

[0022] The cylinder auxiliary lifting device can assist the user in climbing, effectively reduce the intensity of exercising with the fitness machine, greatly expand the application scope of the fitness machine, and break through the use limitations of the fitness machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of a first state of a specific embodiment provided by the utility model;

[0025] Figure 2 This is a schematic diagram of a second state of a specific embodiment provided by the utility model.

[0026] Figure 1 and Figure 2 , the reference numerals include:

[0027] 1 is a fitness device, 2 is a movable component, 21 is a sliding member, 22 is an auxiliary rope, 23 is a cylinder, 24 is a gas tank, 3 is a transmission component, 31 is a swing wheel, 4 is a locking component, 41 is a plug rod, 42 is a support rod, 421 is a rod-shaped structure, 422 is a plug plate, 5 is a frame member, 51 is a first through hole, and 52 is a second through hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The core of the utility model is to provide a cylinder-assisted lifting device, which can provide upward pulling force for the user during climbing, reduce the user's training intensity, and break through the use limitations of fitness equipment. Another core of the utility model is to provide a fitness equipment including the above-mentioned cylinder-assisted lifting device.

[0030] Please refer to Figure 1 and Figure 2The utility model provides a cylinder-assisted lifting device, including a movable component 2 and a transmission component 3. The movable component 2 is used to provide an upward pulling force for the user, including an auxiliary rope 22, a cylinder 23 and a gas storage tank 24. The cylinder 23 and the gas storage tank 24 are fixedly arranged on the fitness machine. The pipeline of the gas storage tank 24 is connected to one of the rodless cavity and the rod cavity of the cylinder 23. The gas port of the other of the rod cavity and the rodless cavity of the cylinder 23 is connected to the external environment of the cylinder 23. The auxiliary rope 22 is connected to the free end of the piston rod; the transmission component 3 is arranged on the top of the fitness machine 1, and the free end of the auxiliary rope 22 bypasses the transmission component 3 and extends to the bottom to be connected to both sides of the waist of the user.

[0031] The movable assembly 2 is arranged at the bottom of the frame of the fitness device 1, and the auxiliary rope 22 in the movable assembly 2 is guided to both sides of the waist of the user through the transmission assembly 3 located at the top of the fitness device 1, wherein the auxiliary rope 22 can be an elastic rope or a nylon rope, etc. Optionally, a hook is arranged at the free end of the auxiliary rope 22, so as to facilitate the operation of connecting with the user. It is worth noting that the number or type of each component in the transmission assembly 3 is not limited, such as using a fixed pulley or a structure with an arc track on the top, etc., as long as the above functions can be achieved.

[0032] Specifically, Figure 1 and Figure 2 As shown, the cylinder 23 is arranged longitudinally, and the free end of the piston rod of the cylinder 23 is connected to the auxiliary rope 22. Optionally, the auxiliary rope 22 includes two ropes, and one end of the two auxiliary ropes 22 is fixedly connected to the free end of the piston rod by means of a buckle or a snap; or, there is only one auxiliary rope 22, and the free end of the piston rod is provided with a through hole or a groove in the radial direction, and the auxiliary rope 22 passes through the through hole or the groove.

[0033] Optionally, the cylinder 23 is arranged in the longitudinal direction, and one end of the piston rod of the cylinder 23 is arranged to face downward, and the air port of the rodless chamber of the cylinder 23 is connected to the gas storage tank 24 through a pipeline, and within the effective stroke of the piston rod, the pressure in the rodless chamber of the cylinder 23 and the gas storage tank 24 is always greater than the atmospheric pressure, or the air port of the rod chamber of the cylinder 23 is connected to the gas storage tank 24 through a pipeline, and within the effective stroke of the piston rod, the pressure in the rod chamber of the cylinder 23 and the gas storage tank 24 is always less than the atmospheric pressure. Then, when the user climbs upward, the pressure in the rodless chamber of the cylinder 23 is transmitted to the downward thrust through the piston rod, the piston rod extends downward, and provides an upward pulling force to the user through the auxiliary rope 22, and when the user falls downward, the user's own weight provides an upward thrust to the piston rod, and the piston rod retracts upward to restore the initial position, and at the same time, the pressure difference in the cylinder 23 provides an upward pulling force to the user.

[0034] Optionally, the cylinder 23 is provided with one end of the piston rod facing upward, and the air port of the rodless chamber of the cylinder 23 is connected to the gas tank 24 through a pipeline, and within the effective stroke of the piston rod, the pressure in the rodless chamber of the cylinder 23 and the gas tank 24 is always less than the atmospheric pressure, or the air port of the rod chamber of the cylinder 23 is connected to the gas tank 24 through a pipeline, and within the effective stroke of the piston rod, the pressure in the rod chamber of the cylinder 23 and the gas tank 24 is always greater than the atmospheric pressure. When the user climbs upward, the pressure in the rod chamber of the cylinder 23 transmits a downward thrust to the piston rod, the piston rod retracts downward, and provides an upward pulling force to the user through the auxiliary rope 22, and when the user falls downward, the user's own weight provides an upward pulling force to the piston rod, and the piston rod extends upward to restore the initial position, and at the same time, the pressure difference in the cylinder 23 provides an upward pulling force to the user.

[0035] When in use, first tie the free ends of the auxiliary rope 22 to both sides of the user's waist, and then release the locking assembly 4. When climbing, the air pressure in the cylinder 23 transmits a downward thrust to the piston rod, thereby providing an upward pulling force for the user. When falling, the piston rod of the cylinder 23 moves upward to return to its original position. At the same time, the air pressure in the cylinder 23 provides an upward pulling force for the user, thereby protecting the user.

[0036] The cylinder auxiliary lifting device can assist the user in climbing, effectively reduce the intensity of exercising using the fitness equipment 1, greatly expand the application scope of the fitness equipment 1, and break through the use limitations of the fitness equipment 1.

[0037] On the basis of the above embodiment, the movable component 2 further includes a sliding member 21 , and the sliding member 21 is rotatably disposed on a sliding seat, the sliding seat is fixedly disposed on the free end of the piston rod, and the auxiliary rope 22 is wound around the circumference of the sliding member 21 .

[0038] Optional, such as Figure 1 and Figure 2 As shown, the sliding seat is a U-shaped structure, and the top two ends of the sliding seat are fixedly connected to the piston rod by welding clamps or the like. The cross bar at the bottom of the sliding seat serves as a pin shaft and passes through the central through hole of the sliding member 21, so that the sliding member 21 can be rotatably set on the sliding seat. Alternatively, the sliding seat adopts a columnar structure, and a groove is provided at the end of the sliding seat away from the piston, and colinear through holes are provided on both side walls of the groove. The sliding member 21 is embedded in the groove, and the middle rotating shaft of the sliding member 21 extends into the through hole of the side wall of the groove. Of course, the sliding seat can also adopt any other type of structure as long as the above functions can be achieved.

[0039] In this embodiment, the sliding member 21 is a movable pulley that rotates circumferentially. When in use, the auxiliary rope 22 and the sliding member 21 roll together, which is conducive to balancing the tension on the auxiliary ropes at both ends of the movable pulley, and the force on both sides of the user's waist is balanced and stable.

[0040] On the basis of the above embodiment, the cylinder-assisted lifting device further includes a locking assembly 4 for locking the initial position of the piston rod.

[0041] The locking assembly 4 is used to lock the initial position of the piston rod in the cylinder 23. To achieve this, the locking assembly 4 includes a sleeve, the piston rod slides along the inner cavity of the sleeve, and a through hole that can be colinear is opened in the sleeve and the piston rod. Locking can be achieved by inserting a rod-like structure in the through hole. When exercising starts, the rod-like structure is pulled out of the through hole to unlock. After finishing exercising, the rod-like structure is inserted back into the through hole to lock, thereby ensuring that the cylinder 23 maintains its initial state when not in use, which is convenient for use.

[0042] Optionally, the locking assembly 4 can also be of the following structure, the locking assembly 4 includes a plug-in rod 41 and a support rod 42, the support rod 42 is fixed to the fitness device 1, and the support rod 42 has a piston hole at a position opposite to the cylinder 23, so that the piston rod can movably pass through; the side wall of the piston hole has a first plug-in hole, the sliding seat or the piston rod has a second plug-in hole parallel to the first plug-in hole, and the plug-in rod 41 can be inserted into or pulled out of the first plug-in hole and the second plug-in hole.

[0043] Specifically, Figure 1 and Figure 2 As shown, the support rod 42 is arranged horizontally, and the cylinder body of the cylinder 23 abuts against the support rod 42. Bolts and nuts can be used to connect with the support rod 42 through the flange structure at the end of the cylinder 23, or other types of fixing methods can be used; a through hole is opened on the support rod 42 along the longitudinal direction as a piston hole, so that the piston rod can pass through the support rod 42 and can move up and down in the piston hole.

[0044] A first plug-in hole is provided on the side wall of the piston hole, and a second plug-in hole is provided on the piston rod or the sliding seat connected thereto. After the piston rod is retracted into the cylinder 23, the first plug-in hole and the second plug-in hole can be collinear, and the piston rod can be locked through the plug-in hole. Conversely, the piston rod can be unlocked by pulling the plug-in rod 41 out of the first plug-in hole and the second plug-in hole.

[0045] When in use, first tie the free ends of the auxiliary rope 22 to both sides of the user's waist, then the user squats slightly to create a gap between the plug rod 41 and the side walls of the first plug hole and the second plug hole, and finally pull out the plug rod 41 to start climbing.

[0046] Optionally, the first plugging hole and the second plugging hole are through holes along the horizontal direction or through holes inclined relative to the horizontal direction.

[0047] In some embodiments, the second plug-in hole is arranged along the radial direction of the piston rod. In this way, the plug-in rod 41 is arranged horizontally when in use, which is beneficial to ensuring the function of the locking assembly 4 and the strength of the piston rod.

[0048] Based on the above embodiment, the support rod 42 includes a rod-shaped structure 421 and a plug plate 422, the plug plate 422 is located on the vertical side opposite to the rod-shaped structure 421, the first plug hole is located at the part of the plug plate 422 protruding from the rod-shaped structure 421, and the first plug hole passes through the two plug plates 422.

[0049] like Figure 1 and Figure 2 As shown, a plug plate 422 is respectively provided on the two vertical sides of the rod-like structure 421. The plug plate 422 can be fixed to the rod-like structure 421 as a whole by welding or threaded connection, and the plug plate 422 protrudes downward from the rod-like structure 421, and a linear first plug hole is provided on the part where the two plug plates 422 protrude from the rod-like structure 421. When in use, the piston rod moves between the two plug plates 422. When the second plug hole on the piston rod is aligned with the first plug hole, the plug rod 41 is inserted into the first plug hole and the second plug hole to achieve locking of the piston rod. Such a configuration is conducive to ensuring the stability of the support rod 42 and improving the load-bearing performance of the support rod 42.

[0050] In some embodiments, the plug plate 422 further has a third plug hole into which the plug rod 41 can be inserted or pulled out, and the third plug hole and the piston hole are independent of each other.

[0051] A third plugging hole is set at a position far away from the first plugging hole, so that the plug-in rod 41 can be movably set in the third plugging hole. After the plug-in rod 41 is pulled out from the first plugging hole and the second plugging hole, it can be inserted into the third plugging hole, that is, the third plugging hole is used to place the plug-in rod 41, which effectively reduces the possibility of losing the plug-in rod 41 and facilitates the removal of the plug-in rod 41.

[0052] Based on any of the above embodiments, the side wall of the gas storage tank 24 has a gas port for gas to flow into or out of the gas storage tank 24, and the gas port of the gas storage tank 24 is provided with a plug that can be inserted or pulled out.

[0053] A through hole is provided on the side wall of the gas storage tank 24 as a gas port, and a plug that can be inserted or removed is provided in the gas port, so that gas can be filled into the gas storage tank 24 or gas in the gas storage tank 24 can be discharged at any time, thereby adjusting the gas pressure in the gas storage tank 24 and the chamber of the cylinder 23 connected to the gas storage tank 24, thereby meeting different exercise intensities and further breaking through the use limitations of the fitness device 1.

[0054] It should be noted that the types of the gas port of the gas storage tank 24 and the plug are not limited, as long as the two cooperate to both close and open the gas storage tank 24.

[0055] In other embodiments, a controller and a solenoid valve are further included, wherein the solenoid valve outlet is connected to the air port of the gas storage tank (24), one air inlet of the solenoid valve is connected to the atmosphere, and the other air inlet is connected to the high-pressure air outlet tank, and the pressure of the gas in the high-pressure gas storage tank is higher than the pressure of the gas in the gas storage tank 24, and the solenoid valve is connected to the controller signal.

[0056] When in use, the working state of the solenoid valve is controlled by the controller, so as to deflate or inflate the gas storage tank 24 .

[0057] Based on any of the above embodiments, it also includes a frame member 5 detachably arranged on the frame of the fitness equipment 1, the cylinder 23, the gas tank 24 and the locking assembly 4 are all arranged on the frame member 5, and the frame member 5 has a space for the sliding member 21 and the piston rod to move.

[0058] like Figure 1 and Figure 2 As shown, the frame member 5 connects the cylinder 23, the gas tank 24, the sliding member 21, the locking assembly 4, etc. into an integral structure. Optionally, the frame member 5 is a rectangular frame or a trapezoidal frame, etc. The cylinder 23, the gas tank 24, the sliding member 21, the locking assembly 4, etc. are all located in the middle space of the frame member 5. During installation, the above-mentioned overall structure is fixed at a preset position of the fitness equipment 1. Such an arrangement facilitates operations such as handling, storage, transportation and installation.

[0059] In some embodiments, the top edge of the frame member 5 has a first through hole 51 and a second through hole 52 for the auxiliary rope 22 to pass longitudinally, and the connecting direction of the first through hole 51 and the second through hole 52 is coplanar with the tangent direction of the bottom end of the sliding member 21 along the longitudinal direction. Figure 1 and Figure 2 As shown, in this embodiment, a first through hole 51 and a second through hole 52 are longitudinally opened on the top plate of the frame member 5 to limit the position of the auxiliary rope 22. When in use, the portion of the auxiliary rope 22 located below the first through hole 51 and the second through hole 52 is always in a vertical state. Such a configuration is beneficial to reducing the occurrence of derailment of the auxiliary rope 22.

[0060] In some embodiments, the frame member 5 has a foot having a groove for cooperating with the bracket of the fitness equipment 1, and opposite side walls of the groove are provided with a connecting portion for fixing the auxiliary lifting device.

[0061] Two feet are arranged at the bottom of the frame member 5. Optionally, the feet are U-shaped structures with the opening facing downward, and the grooves below the feet can be rectangular grooves or semicircular grooves, etc. Preferably, the shape of the grooves is the same as the shape of the bracket at the position where the auxiliary lifting device is to be fixed, so that the bracket can be embedded in the grooves, which is beneficial to improving the stability of the cylinder auxiliary lifting device.

[0062] The connection part of the side wall of the base foot can be a through hole, and a bolt can be set in the through hole, or a clamp can be used. During installation, the auxiliary lifting device is carried and placed in a preset position, and the frame member 5 is fixed to the bracket of the fitness equipment 1 through the connection part, thereby completing the installation of the cylinder auxiliary lifting device.

[0063] On the basis of any of the above embodiments, the transmission assembly 3 includes a swing wheel 31 , the swing wheel 31 is rotatably disposed on a mounting seat, and the mounting seat is rotatably disposed on the fitness device 1 .

[0064] like Figure 1 and Figure 2 As shown, the mounting seat connecting the swing wheel 31 to the fitness device 1 can adopt a U-shaped structure or a trapezoidal structure, etc. The top of the mounting seat is rotatably connected to the fitness device through a pin shaft or a hinge structure, etc., and the bottom cross bar of the mounting seat is used as a pin shaft or a hinge structure set at the bottom of the mounting seat to be rotatably connected to the swing wheel 31, so that the swing wheel 31 is suspended on the bracket of the fitness device 1, and the swing wheel 31 can rotate around its own axis and around the rotation center between the fitness device 1 and the mounting seat. With this arrangement, the auxiliary rope 22 can be self-guided, which is conducive to smooth climbing by the user.

[0065] In addition to the above-mentioned cylinder-assisted lifting device, the utility model also provides a fitness machine including the cylinder-assisted lifting device disclosed in the above-mentioned embodiment. The structures of other parts of the fitness machine can refer to the prior art and will not be described in detail herein. The fitness machine can be a rope climbing machine, a pull-up trainer, or other exercise equipment.

[0066] It should be noted that the relational terms such as "first" and "second" mentioned above are merely used to distinguish one entity from other entities, and do not necessarily require or imply any actual relationship or order between these entities; the "upper surface, lower surface, top, bottom" and the directional words "upper, lower, left, right" mentioned above are all defined based on the drawings in the specification.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] The above is a detailed introduction to the cylinder-assisted lifting device and fitness equipment provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A cylinder-assisted lifting device, characterized in that: include: The movable assembly (2) is used to provide an upward pulling force for the user, comprising an auxiliary rope (22), a cylinder (23) and an air tank (24), wherein the cylinder (23) and the air tank (24) are fixedly arranged on the fitness equipment, the pipeline of the air tank (24) is connected to one of the rodless cavity and the rod cavity of the cylinder (23), the air port of the other of the rod cavity and the rodless cavity of the cylinder (23) is connected to the external environment of the cylinder (23), and the auxiliary rope (22) is connected to the free end of the piston rod of the cylinder (23); The transmission assembly (3) is arranged on the top of the fitness equipment (1), and the free end of the auxiliary rope (22) passes around the transmission assembly (3) and extends to the bottom to be connected to both sides of the waist of the user.

2. The cylinder-assisted lifting device according to claim 1, characterized in that: The movable component (2) further comprises a sliding member (21), and the sliding member (21) is rotatably arranged on a sliding seat, the sliding seat is fixedly arranged on the free end of the piston rod, and the auxiliary rope (22) is wound around the circumference of the sliding member (21).

3. The cylinder-assisted lifting device according to claim 2, characterized in that: It also includes a locking assembly (4) for locking the initial position of the piston rod.

4. The cylinder-assisted lifting device according to claim 3, characterized in that: The locking assembly (4) comprises a plug-in rod (41) and a support rod (42), wherein the support rod (42) is fixedly arranged on the fitness device (1), and a piston hole is provided at a position of the support rod (42) opposite to the cylinder (23) so that the piston rod can movably pass through the hole. The side wall of the piston hole has a first plugging hole, the sliding seat or the piston rod has a second plugging hole parallel to the first plugging hole, and the plugging rod (41) can be inserted into or pulled out of the first plugging hole and the second plugging hole.

5. The cylinder-assisted lifting device according to claim 4, characterized in that: The support rod (42) comprises a rod-shaped structure (421) and a plug plate (422), wherein the plug plate (422) is located on the vertical side opposite to the rod-shaped structure (421), and the first plug hole is located at the portion of the plug plate (422) protruding from the rod-shaped structure (421), and the first plug hole passes through the two plug plates (422).

6. The cylinder-assisted lifting device according to any one of claims 1 to 5, characterized in that: The side wall of the gas storage tank (24) has a gas port for gas to flow into or out of the gas storage tank (24), and the gas port of the gas storage tank (24) is provided with a plug that can be inserted or pulled out.

7. The cylinder-assisted lifting device according to any one of claims 3 to 5, characterized in that: It also comprises a frame member (5) detachably mounted on the frame of the fitness equipment (1), the cylinder (23), the gas storage tank (24) and the locking assembly (4) are all mounted on the frame member (5), and the frame member (5) has a space for the sliding member (21) and the piston rod to move; And / or, the top edge of the frame member (5) has a first through hole (51) and a second through hole (52) for the auxiliary rope (22) to pass longitudinally, and the connecting direction of the first through hole (51) and the second through hole (52) is longitudinally coplanar with the tangent direction of the bottom end of the sliding member (21).

8. The cylinder-assisted lifting device according to any one of claims 1 to 5, characterized in that: The transmission assembly (3) comprises a swing wheel (31), the swing wheel (31) is rotatably mounted on a mounting seat, and the mounting seat is rotatably mounted on the fitness device (1).

9. A fitness device, characterized in that: It comprises the cylinder-assisted lifting device as described in any one of claims 1 to 8.

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