Strength training equipment

Abstract

The utility model relates to strength training equipment which comprises a training frame, a telescopic stand column, a pulley block and a handle. The training frame comprises a case. The telescopic stand column is connected to the machine box in a telescopic mode so that the telescopic stand column can stretch out of the machine box or retract into the machine box, and a first induction piece is arranged on the telescopic stand column. The pulley block is detachably connected to the telescopic stand column, and a second induction piece is arranged on the pulley block. The handle is detachably connected to a pull rope penetrating out of the case, and the pull rope is wound around the pulley block. Wherein an adjusting switch used for controlling the telescopic stand column is arranged on the machine box, and when the pulley block is connected to the telescopic stand column, the first induction piece is magnetically connected with the second induction piece, and the control function of the adjusting switch fails; and deformation caused by collision with the case when the pulley block and the handle retract into the case along with the telescopic stand column under the condition that the pulley block and the handle are not detached is avoided. When the pulley block is detached from the telescopic stand column, the first induction piece and the second induction piece are separated from magnetic connection, and the adjusting switch restores the control function.

Description

Technical Field

[0001] The utility model relates to the field of sports equipment, and more particularly, to a strength training device. Background Art

[0002] A Chinese patent with the publication number CN115671648A provides a trainer, which includes a rowing machine case, a sliding seat, pedals and a base. The rowing machine case is arranged at the first end of the base, the pedal angle is adjustably arranged on one side of the rowing machine case close to the second end of the base, and the sliding seat slides across both sides of the base to slide between the rowing machine case and the second end of the base along the length direction of the base. An expansion bracket is also arranged inside the rowing machine case, a pull rope passes through the expansion bracket and is detachably connected to a rowing handle, and an adjustment knob for controlling the expansion bracket to extend out of the rowing machine case or retract into the rowing machine case is arranged on the top of the rowing machine case.

[0003] When performing aerobic rowing training, the user controls the expansion bracket to extend through the adjustment knob, grabs the rowing handle and sits on the sliding seat, and steps on the pedals with both feet to perform rowing training. However, if the user accidentally touches the adjustment knob by mistake, and at this time the rowing handle is not detached from the pull rope, as the expansion bracket moves in the direction of retracting into the rowing machine case, the rowing handle will collide with the rowing machine case and cause deformation, and the expansion and contraction structure of the expansion bracket will also be stuck and damaged, posing a safety hazard. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a strength training device to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions.

[0006] The utility model provides a strength training device, which includes:

[0007] A training rack, including a case;

[0008] An expansion column, which is telescopically connected to the case so that the expansion column can extend out of the case or retract into the case, and a first sensing member is arranged on the expansion column;

[0009] A pulley block, which is detachably connected to the expansion column, and a second sensing member is arranged on the pulley block;

[0010] A handle, which is detachably connected to a pull rope passing through the case, and the pull rope is wound around the pulley block;

[0011] Among them, an adjustment switch for controlling the telescopic column is provided on the chassis. When the pulley set is connected to the telescopic column, the first sensing member is magnetically connected to the second sensing member, and the first sensing member sends an electronic signal to the controller through a circuit. At this time, the lifting function of the telescopic column is locked and cannot be controlled by the adjustment switch; when the pulley set is detached from the telescopic column, the first sensing member is disengaged from the magnetic connection with the second sensing member, and the first sensing member interrupts sending the electronic signal to the controller. At this time, the lifting function of the telescopic column is unlocked and can be lifted and lowered through the adjustment switch. In some embodiments of the present application, one of the first sensing member and the second sensing member is a magnetic reed switch, and the other is a magnet.

[0012] In some embodiments of the present application, the strength training device further includes a driving component and a guiding component;

[0013] The driving component drives the telescopic column to expand and contract;

[0014] The guiding component is used to guide the telescopic trajectory of the telescopic column;

[0015] The adjustment switch is used to control the driving component.

[0016] In some embodiments of the present application, the driving component includes a nut and a screw;

[0017] The nut is connected to the telescopic column;

[0018] The screw is screwed to the nut, and when the screw rotates, it drives the telescopic column to expand and contract through the nut;

[0019] The guiding component includes at least one guiding column;

[0020] At least one guiding hole is provided on the telescopic column, and the guiding column is inserted into the guiding hole.

[0021] In some embodiments of the present application, there are two sets of guiding columns;

[0022] The two sets of guiding columns are respectively arranged on both sides of the screw;

[0023] Two sets of guiding holes corresponding to the two sets of guiding groups are provided on the telescopic column.

[0024] In some embodiments of the present application, the driving component further includes a first pulley, a second pulley, a tensioning pulley, a transmission belt and a driving member;

[0025] The first pulley is coaxially connected to the screw;

[0026] Both ends of the transmission belt are respectively wound around the first pulley and the second pulley, and the tensioning pulley is arranged between the first pulley and the second pulley and presses against the transmission belt;

[0027] The driving member drives the second pulley to rotate.

[0028] In some embodiments of the present application, the chassis includes a top plate and a through hole is provided on the top plate;

[0029] The training rack further includes a base, and the base includes a bottom plate;

[0030] One end of the chassis is connected to the base, and the top plate and the bottom plate are opposite to each other;

[0031] The telescopic column includes a column body and a base;

[0032] The column body passes through the through hole;

[0033] The base is arranged between the top plate and the bottom plate;

[0034] When the column body extends out of the chassis through the through hole, the base can abut against the top plate;

[0035] When the column body retracts into the chassis through the through hole, the base can abut against the bottom plate.

[0036] In some embodiments of the present application, an installation rack is provided in the chassis;

[0037] The installation rack includes a support column and a top beam;

[0038] The lower end of the support column is connected to the bottom plate, and two support columns are provided at intervals;

[0039] The top beam is connected to the upper ends of the two support columns, and a through hole is provided on the top beam, and the through hole communicates with the through hole;

[0040] The column body passes through the through hole and the through hole;

[0041] The base is arranged between the top beam and the bottom plate;

[0042] When the column body extends out of the chassis through the through hole and the through hole, the base can abut against the top beam.

[0043] In some embodiments of the present application, a first connecting portion and a positioning hole are provided on the telescopic column;

[0044] The pulley block includes a main body, a positioning member and an operating member;

[0045] The main body is provided with the second induction member, a pulley, a second connecting portion and a back plate, wherein the second connecting portion is used to be detachably connected to the first connecting portion, and the back plate is provided with a through slot;

[0046] The positioning member is movably disposed in the through slot;

[0047] The operating member is movably connected to the main body and is disposed adjacent to the back plate. A clearance groove is disposed on a side of the operating member facing the back plate. The operating member has a locked state and an unlocked state.

[0048] In the locked state, the clearance groove is offset from the through groove, and the operating member abuts against the positioning member so that the positioning member extends out of the back plate to the side facing away from the operating member and into the positioning hole, so as to prevent the second connecting part from being removed from the first connecting part;

[0049] In the unlocked state, the clearance groove is aligned with the through groove, and the positioning member can enter the clearance groove and exit the positioning hole to allow the second connecting part to be removed from the first connecting part.

[0050] In some embodiments of the present application, the training frame further includes a base;

[0051] The chassis is connected to one end of the base;

[0052] The strength training equipment also includes a seat cushion and a footrest;

[0053] The seat cushion is movably connected to the base;

[0054] The footrest is rotatably connected to the base and is close to the chassis.

[0055] It can be seen from the above technical solutions that the embodiments of the utility model have at least the following advantages and positive effects:

[0056] In the strength training device of the embodiment of the utility model, the telescopic column is extended out of the chassis, the pulley block is connected to the telescopic column, the pull rope is passed through the chassis and wound around the pulley block, and the handle is connected to the pull rope, and strength training can be performed by holding the handle. When the pulley block is connected to the telescopic column, the first induction member is magnetically connected to the second induction member, and the first induction member sends an electronic signal to the controller through the line. At this time, the lifting function of the telescopic column is locked, and the lifting cannot be controlled by the adjustment switch. Therefore, the adjustment switch function fails during strength training, and even if the adjustment switch is accidentally touched, the telescopic column will not move in the direction of retracting into the chassis, avoiding deformation caused by collision with the chassis as the telescopic column retracts into the chassis when the pulley block and the handle are not removed.

[0057] Only when the pulley block is first disassembled from the telescopic column, since the first sensing member and the second sensing member are disengaged from the magnetic connection, the first sensing member interrupts sending an electronic signal to the controller. At this time, the lifting function of the telescopic column is unlocked and the lifting can be achieved by adjusting the switch. Therefore, the function of the adjusting switch is restored, and the telescopic column can be smoothly retracted into the chassis by operating the adjusting switch. At this time, since both the handle and the pulley block have been disassembled, there will be no collision with the chassis to hinder the retraction of the telescopic column into the chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] By considering the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings, various objectives, features, and advantages of the present invention will become more apparent. The drawings are only exemplary illustrations of the present invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always represent the same or similar components. Among them:

[0059] Figure 1 is a schematic structural diagram of a strength training device shown according to an exemplary embodiment.

[0060] Figure 2 is Figure 1 a schematic structural diagram after removing the chassis.

[0061] Figure 3 is Figure 2 an enlarged schematic structural diagram of area A in

[0062] Figure 4 is Figure 3 a schematic structural diagram from another angle.

[0063] Figure 5 is Figure 4 a disassembled schematic structural diagram of

[0064] Figure 6 is Figure 4 a schematic structural diagram after disassembling the telescopic column and the pulley block in

[0065] Figure 7 is Figure 6 a disassembled schematic structural diagram of the telescopic column of

[0066] Figure 8 is Figure 6 a schematic structural diagram of the pulley block in

[0067] Figure 9 is a cross-sectional view of the pulley block in the locked state.

[0068] Figure 10 is a cross-sectional view of the pulley block in the unlocked state.

[0069] The description of the reference numerals is as follows: 1, training rack; 11, chassis; 111, adjustment switch; 112, top plate; 113, mounting rack; 1131, support pillar; 1132, top beam; 12, base; 121, bottom plate; 2, telescopic column; 21, reed switch; 22, column body; 23, base; 231, guiding hole; 24, first connecting portion; 25, positioning hole; 3, pulley block; 31, main body; 311, pulley; 312, second connecting portion; 313, back plate; 3131, through slot; 32, positioning member; 33, operating member; 331, relief slot; 4, handle; 5, seat cushion; 6, footrest; 7, drive assembly; 71, nut; 72, screw; 73, first pulley; 74, second pulley; 75, tension pulley; 76, transmission belt; 77, drive member; 8, guiding assembly; 81, guiding column. Detailed implementation manners

[0070] Although the present utility model can be easily embodied in different forms of embodiments, only some specific embodiments are shown in the drawings and will be described in detail in this specification. At the same time, it can be understood that this specification should be regarded as a demonstration of the principle of the present utility model and is not intended to limit the present utility model to what is described herein.

[0071] Therefore, a feature pointed out in this specification is used to illustrate one of the features of an embodiment of the present utility model, rather than implying that each embodiment of the present utility model must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined to show possible system designs, these features can also be used in other combinations not explicitly described. Therefore, unless otherwise stated, the described combination is not intended to be limiting.

[0072] In the embodiment shown in the drawings, the indication of directions (such as up, down, left, right, front and back) is used to explain that the structures and movements of various elements of the present utility model are not absolute but relative. When these elements are in the positions shown in the drawings, these explanations are appropriate. If the description of the positions of these elements changes, then the indication of these directions also changes accordingly.

[0073] Please refer to Figures 1 to 6 , a strength training device provided by an embodiment of the present utility model includes a training rack 1, a telescopic column 2, a pulley block 3 and a handle 4.

[0074] The training rack 1 includes a chassis 11. The telescopic column 2 is telescopically connected to the chassis 11 so that the telescopic column 2 can extend out of the chassis 11 or retract into the chassis 11. A first sensing member is provided on the telescopic column 2. The pulley block 3 is detachably connected to the telescopic column 2, and a second sensing member is provided on the pulley block 3. The handle 4 is detachably connected to a pulling rope passing out of the chassis 11, and the pulling rope is wound around the pulley block 3.

[0075] Among them, an adjustment switch 111 for controlling the telescopic column 2 is provided on the chassis 11. When the pulley block 3 is connected to the telescopic column 2, the first sensing member and the second sensing member are magnetically connected. The first sensing member sends an electronic signal to the controller through a circuit. At this time, the lifting function of the telescopic column 2 is locked and cannot be controlled to lift or lower through the adjustment switch 111. When the pulley block 3 is detached from the telescopic column 2, the first sensing member and the second sensing member are disengaged from magnetic connection, and the first sensing member interrupts sending the electronic signal to the controller. At this time, the lifting function of the telescopic column 2 is unlocked and can be lifted or lowered through the adjustment switch 111.

[0076] Through the above structural design, the telescopic column 2 is extended out of the chassis 11, the pulley block 3 is connected to the telescopic column 2, the pulling rope passes through the inside of the chassis 11 and is wound around the pulley block 3, and the handle 4 is connected to the pulling rope. Strength training can be carried out by holding the handle 4. Since the first sensing member and the second sensing member are magnetically connected when the pulley block 3 is connected to the telescopic column 2, and the first sensing member sends an electronic signal to the controller through a circuit, at this time, the lifting function of the telescopic column 2 is locked and cannot be controlled to lift or lower through the adjustment switch 111. Therefore, the function of the adjustment switch 111 fails during strength training. Even if the adjustment switch 111 is accidentally touched, the telescopic column 2 will not move in the direction of retracting into the chassis 11, avoiding collision with the chassis 11 and deformation when the pulley block 3 and the handle 4 are not detached and the telescopic column 2 retracts into the chassis 11.

[0077] Only when the pulley block 3 is detached from the telescopic column 2, since the first sensing member and the second sensing member are disengaged from magnetic connection and the first sensing member interrupts sending the electronic signal to the controller, at this time, the lifting function of the telescopic column 2 is unlocked and can be lifted or lowered through the adjustment switch 111. Therefore, the function of the adjustment switch 111 is restored, and the telescopic column 2 can be smoothly retracted into the chassis 11 by operating the adjustment switch 111. At this time, since the pulley block 3 has been detached, it will not collide with the chassis 11 to prevent the telescopic column 2 from retracting into the chassis 11.

[0078] A resistance device is provided inside the chassis 11. One end of the pulling rope located inside the chassis 11 is connected to the resistance device, and the resistance device provides resistance when the pulling rope is pulled to achieve the purpose of strength training. The structure of the resistance device can refer to the related technology and will not be elaborated here.

[0079] In this embodiment, one of the first sensing member and the second sensing member is a magnetic reed switch 21, and the other is a magnet. Of course, in other embodiments, the first sensing member and the second sensing member can also adopt other sensors and corresponding triggering members.

[0080] Please refer to Figure 1, the training rack 1 further includes a base 12, the chassis 11 is connected to one end of the base 12, the strength training device further includes a seat cushion 5 and a footrest 6. The seat cushion 5 is movably connected to the base 12, and the footrest 6 is rotatably connected to the base 12 and is close to the chassis 11. The user can sit on the seat cushion 5, place their feet on the footrest 6, hold the handle 4 with both hands, and perform strength training by straightening or bending the legs and pulling the pull rope. The footrest 6 can rotate to adapt to the angle change of the sole of the foot when the human leg is straightened and bent.

[0081] Please refer to Figure 3 , the strength training device further includes a driving component 7 and a guiding component 8. The driving component 7 drives the telescopic column 2 to expand and contract, and the guiding component 8 is used to guide the expansion and contraction trajectory of the telescopic column 2. The adjustment switch 111 is used to control the driving component 7.

[0082] Since the pulling force exerted on the telescopic column 2 by the pull rope during strength training is close to perpendicular to the expansion and contraction direction of the telescopic column 2, a shearing force will be generated on the telescopic column 2. Through the guiding component 8, not only can the expansion and contraction direction of the telescopic column 2 be guided to make the expansion and contraction trajectory of the telescopic column 2 more stable, but also the ability of the telescopic column 2 to resist the shearing force can be improved, avoiding the telescopic column 2 from bending and deforming, and improving the structural stability of the telescopic column 2.

[0083] Please refer to Figure 4 and Figure 5 , the driving component 7 includes a nut 71 and a screw rod 72. The nut 71 is connected to the telescopic column 2. The screw rod 72 is screwed to the nut 71. When the screw rod 72 rotates, it drives the telescopic column 2 to expand and contract through the nut 71, that is, the driving component 7 is a screw drive mechanism. The guiding component 8 includes at least one guiding column 81. A guiding hole 231 is provided on the telescopic column 2, and the guiding column 81 passes through the guiding hole 231. The cooperation between the guiding column 81 and the guiding hole 231 makes the expansion and contraction trajectory of the telescopic column 2 more stable. At the same time, the guiding column 81 plays a role in keeping the position of the telescopic column 2 stable and improving the ability of the telescopic column 2 to resist the shearing force.

[0084] There are two groups of guiding columns 81, and the two groups of guiding columns 81 are respectively arranged on both sides of the screw rod 72. Two groups of guiding holes 231 corresponding to the two groups of guiding columns are provided on the telescopic column 2.

[0085] The stability of the expansion and contraction trajectory is further improved by the two groups of guiding columns 81 arranged on both sides of the screw rod 72, and the ability of the telescopic column 2 to resist the shearing force is further improved.

[0086] The drive assembly 7 further includes a first pulley 73, a second pulley 74, a tension pulley 75, a transmission belt 76, and a drive member 77. The first pulley 73 is coaxially connected to the screw rod 72. Both ends of the transmission belt 76 are respectively wound around the first pulley 73 and the second pulley 74. The tension pulley 75 is disposed between the first pulley 73 and the second pulley 74 and presses against the transmission belt 76. The drive member 77 drives the second pulley 74 to rotate.

[0087] The second pulley 74 can drive the first pulley 73 to rotate synchronously through the transmission belt 76. The screw rod 72 rotates synchronously with the first pulley 73, thereby driving the telescopic column 2 to achieve telescoping. The tension pulley 75 functions to tension the transmission belt 76 and maintain transmission stability. The belt drive structure enables the strength training equipment to have the advantage of being quiet. In other examples, the screw rod 72 can also be driven to rotate through a gear drive. The drive member 77 can be a motor.

[0088] Please refer to Figure 1 and Figure 4 , the chassis 11 includes a top plate 112 and a perforation is provided on the top plate 112. The training rack 1 further includes a base 12, and the base 12 includes a bottom plate 121. The chassis 11 is connected to one end of the base 12, and the top plate 112 and the bottom plate 121 are opposite to each other. The telescopic column 2 includes a column body 22 and a base 23. The column body 22 passes through the perforation. The base 23 is disposed between the top plate 112 and the bottom plate 121. When the column body 22 extends out of the chassis 11 through the perforation, the base 23 can abut against the top plate 112. When the column body 22 retracts into the chassis 11 through the perforation, the base 23 can abut against the bottom plate 121.

[0089] By abutting the base 23 against the top plate 112 and the bottom plate 121 respectively, the telescopic stroke of the telescopic column 2 can be limited.

[0090] Please refer to Figures 3 to 5 , an installation rack 113 is provided inside the chassis 11. The installation rack 113 includes a support column 1131 and a top beam 1132. The lower end of the support column 1131 is connected to the bottom plate 121, and two support columns 1131 are provided at intervals. The top beam 1132 is connected to the upper ends of the two support columns 1131, and a through hole is provided on the top beam 1132. The through hole communicates with the perforation, and the column body 22 passes through the through hole and the perforation. The base 23 is disposed between the top beam 1132 and the bottom plate 121. When the column body 22 extends out of the chassis 11 through the through hole and the perforation, the base 23 can abut against the top beam 1132.

[0091] The bottom plate 121 has a greater thickness than the top plate 112. In the case where the base 23 collides with the top plate 112 for a long time to limit the extension stroke of the telescopic column 2, the top plate 112 of the chassis 11 is likely to be deformed due to insufficient strength. By adding the top beam 1132 with a greater thickness than the top plate 112 to limit the extension stroke of the telescopic column 2, the top beam 1132 has stronger impact resistance and avoids deformation.

[0092] See also Figures 6 to 10 , the telescopic column 2 is provided with a first connecting portion 24 and a positioning hole 25. The pulley block 3 includes a main body 31, a positioning member 32 and an operating member 33. The main body 31 is provided with a second sensing member, a pulley 311, a second connecting portion 312 and a back plate 313. The second connecting portion 312 is used to detachably connect the first connecting portion 24. The back plate 313 is provided with a through groove 3131. The positioning member 32 is movably arranged in the through groove 3131. The operating member 33 is movably connected to the main body 31 and is adjacent to the back plate 313. The operating member 33 is provided with a clearance groove 331 on the side facing the back plate 313. The operating member 33 has a locked state and an unlocked state. In the locked state, the clearance groove 331 is staggered from the through groove 3131, and the operating member 33 pushes against the positioning member 32 so that the positioning member 32 extends out of the back plate 313 away from the operating member 33 and extends into the positioning hole 25 to prevent the second connecting portion 312 from being removed from the first connecting portion 24. In the unlocked state, the clearance groove 331 is aligned with the through groove 3131 , and the positioning member 32 can enter the clearance groove 331 and exit the positioning hole 25 , so as to allow the second connecting portion 312 to be removed from the first connecting portion 24 .

[0093] When the pulley block 3 needs to be installed on the frame, first apply force to the operating member 33 to move the operating member 33 to the unlocked state, align the second connecting portion 312 with the first connecting portion 24, and then release the operating member 33. The operating member 33 rebounds to the locked state, and the positioning member 32 extends into the positioning hole 25 for positioning to prevent the second connecting portion 312 from being removed from the first connecting portion 24.

[0094] When the pulley block 3 needs to be removed from the frame, first apply force to the operating member 33 to move the operating member 33 to the unlocked state, so that the positioning member 32 can enter the clearance groove 331 and exit the positioning hole 25 to release the positioning and allow the second connecting part 312 to be removed from the first connecting part 24.

[0095] By switching the moving operating member 33 between the locked state and the unlocked state, the pulley block 3 can be quickly installed and removed, and the installation is more reliable. The moving stroke of the positioning member 32 can be sufficient to extend into or out of the positioning hole 25. The moving stroke of the positioning member 32 is required to be short, and the thickness of the main body 31 can be correspondingly smaller, which is conducive to miniaturization of the product.

[0096] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A strength training device, characterized in that: include: training rack, including chassis; A telescopic column, telescopically connected to the chassis, so that the telescopic column can be extended out of the chassis or retracted into the chassis, and a first induction member is provided on the telescopic column; A pulley block is detachably connected to the telescopic column, and a second induction member is provided on the pulley block; A handle, detachably connected to a drawstring extending from the chassis, and the drawstring is wound around the pulley block; Wherein, the chassis is provided with an adjustment switch for controlling the telescopic column. When the pulley block is connected to the telescopic column, the first induction member is magnetically connected to the second induction member, and the first induction member sends an electronic signal to the controller through a line. At this time, the lifting function of the telescopic column is locked, and the lifting and lowering cannot be controlled by the adjustment switch; when the pulley block is removed from the telescopic column, the first induction member is disconnected from the second induction member by magnetic connection, and the first induction member stops sending electronic signals to the controller. At this time, the lifting and lowering function of the telescopic column is unlocked, and lifting and lowering can be achieved by the adjustment switch.

2. The strength training device according to claim 1, characterized in that: One of the first induction element and the second induction element is a reed tube, and the other is a magnet.

3. The strength training device according to claim 1, characterized in that: The strength training device also includes a drive assembly and a guide assembly; The driving assembly drives the telescopic column to extend and retract; The guide assembly is used to guide the telescopic trajectory of the telescopic column; The regulating switch is used to control the driving component.

4. The strength training device according to claim 3, characterized in that: The driving assembly includes a nut and a screw; The nut is connected to the telescopic column; The screw is screwed to the nut, and when the screw rotates, the telescopic column is driven to extend and retract through the nut; The guide assembly includes at least one guide post; The telescopic column is provided with at least one guide hole, and the guide column is inserted into the guide hole.

5. The strength training device according to claim 4, characterized in that: The guide posts are provided with two groups; The two groups of guide posts are respectively arranged on both sides of the screw rod; The telescopic column is provided with two groups of guide holes corresponding to the two groups of guide groups respectively.

6. The strength training device according to claim 4, characterized in that: The drive assembly also includes a first pulley, a second pulley, a tensioning wheel, a transmission belt and a driving member; The first pulley is coaxially connected to the screw; Two ends of the transmission belt are respectively wound around the first pulley and the second pulley, and the tensioning wheel is arranged between the first pulley and the second pulley and presses against the transmission belt; The driving member drives the second pulley to rotate.

7. The strength training device according to claim 1, characterized in that: The chassis comprises a top plate and the top plate is provided with a perforation; The training frame also includes a base, and the base includes a bottom plate; The chassis is connected to one end of the base, and the top plate is opposite to the bottom plate; The telescopic column comprises a column body and a base; The column is disposed through the through hole; The base is arranged between the top plate and the bottom plate; When the column extends out of the chassis through the through hole, the base can abut against the top plate; When the column is retracted into the chassis through the through hole, the base can abut against the bottom plate.

8. The strength training device according to claim 7, characterized in that: A mounting frame is provided in the chassis; The mounting frame includes a support column and a top beam; The lower end of the support is connected to the bottom plate, and two support pillars are provided at intervals; The top beam is connected to the upper ends of the two pillars, and a through hole is provided on the top beam, and the through hole is connected to the through hole; The column is disposed through the through hole and the through hole; The base is arranged between the top beam and the bottom plate; When the column extends out of the chassis through the through hole and the perforation, the base can abut against the top beam.

9. The strength training device according to claim 1, characterized in that: The telescopic column is provided with a first connecting portion and a positioning hole; The pulley block comprises a main body, a positioning member and an operating member; The main body is provided with the second induction member, a pulley, a second connecting portion and a back plate, wherein the second connecting portion is used to be detachably connected to the first connecting portion, and the back plate is provided with a through slot; The positioning member is movably disposed in the through slot; The operating member is movably connected to the main body and is disposed adjacent to the back plate. A clearance groove is disposed on a side of the operating member facing the back plate. The operating member has a locked state and an unlocked state. In the locked state, the clearance groove is offset from the through groove, and the operating member abuts against the positioning member so that the positioning member extends out of the back plate to the side facing away from the operating member and into the positioning hole, so as to prevent the second connecting part from being removed from the first connecting part; In the unlocked state, the clearance groove is aligned with the through groove, and the positioning member can enter the clearance groove and exit the positioning hole to allow the second connecting part to be removed from the first connecting part.

10. The strength training device according to claim 1, characterized in that: The training frame also includes a base; The chassis is connected to one end of the base; The strength training equipment also includes a seat cushion and a footrest; The seat cushion is movably connected to the base; The footrest is rotatably connected to the base and is close to the chassis.

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