An anti-theft, adjustable resistance fitness device with a weighted arm

Abstract

This utility model belongs to the field of sports equipment technology, and specifically relates to a counterweight arm for anti-theft adjustable resistance fitness equipment. A transverse lever arm tube is rotatably connected to the main frame, extending in the front-to-back direction. A sliding device is slidably connected to the transverse lever arm tube in the front-to-back direction, and a counterweight is mounted on the sliding device. The front end of a linkage drive mechanism is connected to the sliding device. A positioning adjustment system is connected to the transverse lever arm tube, and the rear end of the linkage drive mechanism is connected to the positioning adjustment system. By using the linkage drive mechanism to drive the sliding device to slide along the transverse lever arm tube in the front-to-back direction, the counterweight on the sliding device can be moved to different positions on the transverse lever arm tube, providing users with training resistance of varying intensities. Compared to existing technologies that adjust the number of counterweights, this allows for continuous or precise resistance adjustment, which is beneficial for meeting the personalized training needs of different users.

Description

Technical Field

[0001] This utility model belongs to the field of sports equipment technology, and specifically relates to a theft-proof, adjustable resistance weight arm for fitness equipment. Background Technology

[0002] With the increasing awareness of fitness among the general public, the frequency of use of outdoor fitness equipment is increasing. Among outdoor strength training equipment, the counterweight arm is the core component for achieving resistance adjustment. Its main function is to provide users with different levels of training resistance by changing the position or weight of the counterweight.

[0003] However, the weights (such as barbell plates) on existing outdoor fitness equipment are typically mounted directly on a U-shaped slide bar, secured only by simple clips or nuts. This method of fixing makes them easy to disassemble, leading to frequent theft of barbell plates, increasing equipment maintenance costs and affecting normal user operation. Traditional resistance adjustment mechanisms rely on the cumulative weight of individual barbell plates, and the range of resistance adjustment is limited by the size of the barbell plates (e.g., 5kg, 10kg, etc.), making it impossible to achieve continuous or precise resistance adjustment and failing to meet the personalized training needs of different users. Users must manually move the barbell plates on the slide bar to adjust the resistance, a process prone to accidents such as pinching or bumping. Furthermore, bending over to operate the barbell plates can cause lower back strain, especially for middle-aged and elderly users or those with physical disabilities, posing a higher safety risk.

[0004] Therefore, it is necessary to design a theft-proof, adjustable resistance fitness equipment with a weighted arm to solve the above problems. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a theft-proof, adjustable resistance fitness equipment with a weighted arm, thereby solving the issues raised in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a theft-proof, adjustable resistance fitness equipment with a gravity arm, applied to outdoor fitness equipment, wherein the outdoor fitness equipment includes a main frame, comprising:

[0007] A transverse lever arm tube is rotatably connected to the main frame and extends in the front-rear direction.

[0008] A sliding device is slidably connected to the transverse lever arm tube in the front-back direction, and a counterweight is provided on the sliding device;

[0009] A linkage drive mechanism, the front end of which is connected to the sliding device;

[0010] A positioning and adjustment system is provided, which is connected to the transverse lever arm tube, and the rear end of the linkage drive mechanism is connected to the positioning and adjustment system.

[0011] Furthermore, the anti-theft adjustable resistance fitness equipment counterweight arm also includes:

[0012] A longitudinal support arm is connected to the rear end of the transverse lever arm tube, and the longitudinal support arm and the transverse lever arm tube are L-shaped.

[0013] Furthermore, the anti-theft adjustable resistance fitness equipment counterweight arm also includes:

[0014] There are two horizontal shafts, which are respectively connected to the left and right ends of the sliding device. The axial direction of the horizontal shafts is to the left and right. The counterweight is connected to each of the two horizontal shafts.

[0015] The flange is connected to both of the horizontal axes and is used to limit the movement of the counterweight.

[0016] Furthermore, the sliding device has a guide groove that matches the transverse lever arm tube, and the sliding device is slidably connected to the transverse lever arm tube through the guide groove.

[0017] Furthermore, the linkage drive mechanism includes:

[0018] A connecting rod lever arm, the front end of which is rotatably connected to the sliding device;

[0019] A drive link is provided, the rear end of which is rotatably connected to the rear end of the transverse lever arm tube, and the front end of which is hinged to the rear end of the lever arm tube.

[0020] Furthermore, the linkage drive mechanism also includes:

[0021] A handle, which is connected to the drive linkage.

[0022] Furthermore, the positioning adjustment system includes:

[0023] A positioning plate is connected to the rear end of the transverse lever arm tube, and a plurality of positioning holes are distributed on the positioning plate;

[0024] A positioning pin is connected to the drive linkage and is used to be inserted into the positioning hole.

[0025] Furthermore, the flange is connected to the transverse shaft by anti-theft bolts, and the heads of the anti-theft bolts are non-standard shaped.

[0026] Furthermore, the connection between the sliding device and the transverse lever tube is designed with a seal.

[0027] Furthermore, the transverse lever arm tube can also be configured as a circular tube, and both sides of one end are provided with counterweight plates, and multiple rectangular counterweight blocks are installed on the surface of the counterweight plates using positioning bolts.

[0028] The technical effects and advantages of this utility model are as follows:

[0029] By using a linkage drive mechanism to drive the sliding device to slide along the front and back direction on the transverse lever arm tube, the counterweight on the sliding device can be moved to different positions on the transverse lever arm tube. The positioning adjustment system is used to fix the position of the counterweight on the transverse lever arm tube, thereby providing users with training resistance of different intensities.

[0030] By using a linkage drive mechanism to move the counterweight on the sliding device to different positions on the transverse lever tube to adjust the training resistance, compared with the existing technology that adjusts the number of counterweights, continuous or fine resistance adjustment can be achieved, which is conducive to meeting the personalized training needs of different users.

[0031] There is no need to manually adjust the position of the counterweights to change the training resistance, thus avoiding safety accidents such as pinching or bumping.

[0032] There is no need to bend over to operate the counterweights, avoiding strain on the lower back and reducing safety risks for middle-aged and elderly users or those with physical disabilities when adjusting training resistance.

[0033] The counterweights are mounted on the sliding mechanism as a whole, making them difficult to disassemble individually, which helps reduce the risk of theft.

[0034] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the mechanisms pointed out in the description and drawings. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This invention provides a schematic diagram of the anti-theft adjustable resistance weight arm of a fitness equipment according to an embodiment of the present invention.

[0037] Figure 2 This diagram shows a partial structural schematic of the anti-theft adjustable resistance fitness equipment counterweight arm according to an embodiment of the present invention.

[0038] Figure 3 This diagram illustrates the usage state of the anti-theft adjustable resistance fitness equipment with a counterweight arm according to an embodiment of the present invention.

[0039] Figure 4 This diagram illustrates the use of rectangular counterweights to balance the weight arm of an anti-theft adjustable resistance fitness equipment according to an embodiment of the present invention.

[0040] Figure 5 The assembly of this utility model embodiment is shown. Figure 4 Diagram showing the usage status of the counterweight arm.

[0041] Reference numerals: 1. Main frame; 2. Lateral lever arm tube; 3. Sliding device; 4. Linkage drive mechanism; 5. Positioning adjustment system; 6. Stool frame; 7. Left and right connecting frames of the stool; 8. First seated backrest connecting frame; 9. Second seated backrest connecting frame; 10. Left arm frame; 11. Right arm frame; 12. Seat cushion; 13. Chest pad; 14. Rotating shaft; 15. Longitudinal support arm; 16. Training handle; 17. Horizontal shaft; 18. Flange; 19. Guide groove; 20. Linkage lever arm; 21. Drive linkage; 22. Handle; 23. Positioning plate; 24. Positioning pin; 25. Positioning hole; 26. Counterweight plate; 27. Rectangular counterweight block. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0043] The positive X-axis points forward, and the negative X-axis points backward; the positive Y-axis points left, and the negative Y-axis points right; the positive Z-axis points upward, and the negative Z-axis points downward.

[0044] like Figures 1 to 3As shown, an anti-theft adjustable resistance weighted arm for outdoor fitness equipment is described. The outdoor fitness equipment includes a main frame 1, a transverse lever tube 2, a sliding device 3, a linkage drive mechanism 4, and a positioning adjustment system 5. The transverse lever tube 2 is rotatably connected to the main frame 1 and extends in the front-to-back direction. Specifically, the main frame 1 includes a seat frame 6, left and right seat connecting frames 7, a first seated backrest connecting frame 8, a second seated backrest connecting frame 9, a left arm frame 10, and a right arm frame 11. A seat cushion 12 and a chest pad 13 are connected to the seat frame 6. The left and right sides of the front end of the seat frame 6 are connected to the left arm frame 10 and the right arm frame 11 respectively via a left and right seat connecting frame. The front and rear ends of the left arm frame 10 and the right arm frame 11 are connected via the first seated backrest connecting frame 8 and the second seated backrest connecting frame 9 respectively. The seat frame 6 is connected to the second seated backrest connecting frame 9. Secondly, a rotating shaft 14 is provided at the rear end of the transverse lever arm tube 2. The rotating shaft 14 can be integrally formed or welded with the transverse lever arm tube 2. The axial direction of the rotating shaft 14 is oriented to the left and right, and the angle can also be adjusted according to the actual situation. A transverse lever arm tube 2 can be installed on both the left arm 10 and the right arm 11, so that the transverse lever arm tube 2 is rotatably connected to the left arm 10 or the right arm 11 through the rotating shaft 14. Preferably, the transverse lever arm tube 2 is made of high-strength aluminum alloy tubing, which takes into account both lightweight and structural strength, and the surface is anodized to enhance corrosion resistance. The sliding device 3 is slidably connected to the transverse lever arm tube 2 in the front-back direction, and a counterweight is provided on the sliding device 3. Specifically, the counterweight can be set as a barbell plate, that is, different numbers of barbell plates can be set on the sliding device 3 as needed. The front end of the linkage drive mechanism 4 is connected to the sliding device 3. The positioning adjustment system 5 is connected to the transverse lever arm tube 2, and the rear end of the linkage drive mechanism is connected to the positioning adjustment system 5. Specifically, the positioning adjustment system 5 is used to position the sliding device 3. Therefore, by using the linkage drive mechanism 4 to drive the sliding device 3 to slide along the transverse lever arm tube 2 in the front-back direction, the counterweight on the sliding device 3 can be moved to different positions in the transverse lever arm tube 2 in the front-back direction. The positioning adjustment system 5 positions the linkage drive mechanism 4, thereby positioning the sliding device 3 to fix the position of the counterweight on the transverse lever arm tube 2, thus providing users with training resistance of varying intensities. Secondly, by using the linkage drive mechanism 4 to move the counterweight on the sliding device 3 to different positions in the transverse lever arm tube 2 to adjust the training resistance, compared to adjusting the number of counterweights in existing technologies, continuous or precise resistance adjustment can be achieved, which is beneficial for meeting the personalized training needs of different users. Furthermore, there is no need to manually move the counterweight to adjust the training resistance, avoiding safety accidents such as pinching or bumping. Finally, there is no need to bend over to operate the counterweight, avoiding strain on the lower back, which helps reduce the safety risks for middle-aged and elderly users or those with physical disabilities when adjusting training resistance.In addition, the counterweight is set on the sliding device 3 as a whole, making it difficult to disassemble it one by one, which helps to reduce the risk of theft.

[0045] Optionally, such as Figure 1 As shown, to facilitate better training for users, the anti-theft adjustable resistance fitness equipment's counterweight arm also includes a longitudinal support arm 15. The longitudinal support arm 15 is connected to the rear end of the transverse lever tube 2, and the longitudinal support arm 15 and the transverse lever tube 2 form an L-shape. Specifically, by setting the longitudinal support arm 15 at the rear end of the transverse lever tube 2, with the transverse lever tube 2 horizontally positioned and the longitudinal support arm 15 vertically positioned, the lower end of the longitudinal support arm 15 can be connected to the transverse lever tube 2 by welding or bolting, or it can be integrally formed. A training handle 16 is connected to the upper end of the longitudinal support arm 15, allowing the user to grasp the training handle 16 and rotate the transverse lever tube 2 for training.

[0046] Optionally, such as Figure 1 and Figure 2 As shown, to facilitate the installation of more barbell plates and to limit the movement of the counterweights, the anti-theft adjustable resistance fitness equipment counterweight arm also includes a horizontal shaft 17 and a flange 18. Two horizontal shafts 17 are provided, each connected to the left and right ends of the sliding device 3. The axial direction of the horizontal shafts 17 is left-right, and the counterweights are connected to both horizontal shafts 17. Specifically, the horizontal shaft 17 is located at the upper end of the sliding device 3 and is cylindrical. The flange 18 is connected to both horizontal shafts 17, and the flange 18 is used to limit the movement of the counterweights.

[0047] Specifically, two flanges 18 are connected to the left horizontal shaft 17. The flange 18 closer to the sliding device 3 is bolted to the sliding device 3, and the flange 18 farther from the sliding device 3 is connected to the horizontal shaft 17. The left horizontal shaft 17 can be fitted with multiple barbell plates as counterweights, and the two flanges 18 are used to limit the movement of the multiple barbell plates on the left horizontal shaft 17. Correspondingly, two flanges 18 are also connected to the right horizontal shaft 17. The flange 18 closer to the sliding device 3 is bolted to the sliding device 3, and the flange 18 farther from the sliding device 3 is connected to the horizontal shaft 17. The right horizontal shaft 17 can be fitted with multiple barbell plates as counterweights, and the two flanges 18 are used to limit the movement of the multiple barbell plates on the right horizontal shaft 17. The two flanges 18 and the right horizontal shaft 17 can use either single-sided or double-sided counterweights. Preferably, the barbell plates are made of standard cast iron, with the center hole matching the horizontal axis 17, and the thickness can be selected according to training needs (such as 2.5kg, 5kg, 10kg, etc.).

[0048] Optionally, such as Figure 2As shown, to ensure the stability of the sliding device 3 relative to the transverse lever arm tube 2, a guide groove 19 matching the transverse lever arm tube 2 is provided inside the sliding device 3. The sliding device 3 is slidably connected to the transverse lever arm tube 2 through the guide groove 19. Specifically, the sliding device 3 is configured as a cube structure and has a guide groove 19 facing the front-back direction. Both ends of the guide groove 19 are open, and the sliding device 3 is entirely fitted onto the transverse lever arm tube 2. The size of the guide groove 19 is slightly larger than the size of the transverse lever arm tube 2, so that the sliding device 3 can slide stably relative to the transverse lever arm tube 2 in the front-back direction. Preferably, the main body of the sliding device 3 is made of steel, and a polytetrafluoroethylene wear-resistant pad is embedded in the guide groove 19 to reduce sliding friction resistance.

[0049] Optionally, such as Figures 1 to 3 As shown, the sliding device 3 is driven by the linkage drive mechanism 4. The linkage drive mechanism 4 includes a linkage arm 20 and a drive link 21. The front end of the linkage arm 20 is rotatably connected to the sliding device 3. The rear end of the drive link 21 is hinged to the rear end of the transverse lever tube 2, and the front end of the drive link 21 is rotatably connected to the rear end of the linkage arm 20. The front end of the drive link 21 is used to connect to the positioning adjustment system 5. Specifically, the sliding device 3 has a hinge shaft hole on its side, which is connected to one end of the linkage arm 20 by a pin. Taking the counterweight arm on the right boom 11 as an example, during the driving of the sliding device 3, with the right side as the front, by driving the rear end of the drive link 21 to rotate counterclockwise relative to the rear end of the transverse lever tube 2, the front end of the linkage arm 20 is pulled backward. The connection between the front end of the linkage arm 20 and the sliding device 3 is used to drive the sliding device 3 to move to the rear side of the transverse lever tube 2. Correspondingly, by driving the rear end of the drive linkage 21 to rotate clockwise relative to the rear end of the transverse lever arm tube 2, the front end of the linkage lever arm 20 is pushed forward. The front end of the linkage lever arm 20 is then connected to the sliding device 3, causing the sliding device 3 to move to the front side of the transverse lever arm tube 2. Thus, the linkage drive mechanism 4, by changing the horizontal distance (i.e., lever arm length) of the counterweight relative to the rotating shaft 14, avoids direct contact between the user and the counterweight, helping to eliminate potential safety hazards such as hand pinching and bending over.

[0050] Optionally, such as Figure 1 and Figure 2As shown, to facilitate the rotation of the drive linkage 21, the linkage drive mechanism 4 also includes a handle 22, which is connected to the drive linkage 21. Specifically, by connecting the handle 22 to the drive linkage 21, taking the counterweight arm on the right boom 11 as an example, the handle 22 is located on the right side of the drive linkage 21, i.e., the side away from the main frame 1, making it convenient for the user to pull or push the drive linkage 21 to rotate by applying the handle 22. Thus, the user can indirectly adjust the position of the counterweight by operating the handle 22 on the drive linkage 21 without directly touching the counterweight, eliminating the risk of hand pinching. Secondly, the handle 22 adopts an arc-shaped anti-slip design, which conforms to the human hand grip angle and helps reduce hand fatigue during operation.

[0051] Optionally, such as Figures 1 to 3 As shown, the positioning adjustment system 5 includes a positioning disk 23 and a positioning pin 24. The positioning disk 23 is connected to the rear end of the transverse lever arm tube 2, and multiple positioning holes 25 are distributed on the positioning disk 23. Specifically, the positioning disk 23 is fan-shaped or circular, and the positioning disk 23 is coaxially distributed with the drive linkage 21. Furthermore, multiple positioning holes 25 are evenly distributed along the circumference of the positioning disk 23 (e.g., one hole every 15°). The positioning pin 24 is connected to the drive linkage 21 and is used to insert into the positioning hole 25. Specifically, during the adjustment of the counterweight's position on the transverse lever arm tube 2, the positioning pin 24 is first pulled out of one positioning hole 25. When the sliding device 3 moves to the target position of the transverse lever arm tube 2, the positioning pin 24 is then inserted into the corresponding positioning hole 25 to lock the counterweight's position. That is, by selecting different positioning holes 25, the lever arm length can be precisely adjusted, thereby changing the counterweight torque (torque = counterweight weight × lever arm length). Therefore, the lever arm length can be adjusted in stages via multiple positioning holes 25 on the positioning plate 23. The adjustment range of the counterweight torque is no longer limited by the weight of a single barbell plate, but is continuously adjustable through positional changes (for example, when the counterweight weight is fixed, the torque increases accordingly for every 10cm increase in lever arm length), meeting the personalized training intensity needs of different users. Secondly, the guide groove 19 and positioning pin 24 ensure the smoothness and reliability of the adjustment process, improving the safety of the equipment. In addition, the overall structure adopts mechanical linkage transmission, eliminating the need for complex electronic or hydraulic systems, resulting in low maintenance costs, adaptability to harsh outdoor environments, and a long service life.

[0052] Optionally, the flange 18 and the sliding device 3 are connected by anti-theft bolts, the heads of which are non-standard in shape. Specifically, the bolts connecting the flange 18 and the sliding device 3 are specially designed anti-theft bolts with non-standard head shapes (such as an internal star-shaped column structure), requiring special tools for disassembly. This effectively prevents the counterweight from being stolen and is suitable for outdoor open environments. Preferably, the anti-theft bolts are made of 304 stainless steel, with an internal star-shaped column structure at the head, and are equipped with a special wrench.

[0053] Optionally, the connection between the sliding device 3 and the transverse lever tube 2 is sealed. Specifically, the connection between the sliding device 3 and the transverse lever tube 2 is sealed to prevent external impurities from entering and affecting the sliding performance, while also increasing the difficulty of unauthorized disassembly.

[0054] In summary, the anti-theft bolts and flange 18 work together to structurally prevent theft of barbell plates, addressing a key security concern in outdoor equipment. A linkage drive mechanism 4 enables non-contact adjustment of the counterweight position, avoiding direct user operation and improving both safety and convenience. Positioning holes 25 on the positioning plate 23 allow for graded adjustment of the lever arm length, overcoming the limitations of traditional barbell plate weight stacking and enabling flexible resistance adjustment. This invention, through mechanical structural innovation, effectively solves the problems of anti-theft, resistance adjustment, and security in existing outdoor fitness equipment. It boasts advantages such as simple structure, controllable cost, and strong applicability, and can be widely applied to various strength training equipment such as horizontal bars, parallel bars, and bench press racks.

[0055] In another embodiment of this utility model, the positioning disk 23 is replaced with an arc-shaped rack with graduations, and the sliding device 3 achieves stepless sliding through the meshing of gears and racks, and provides smooth resistance adjustment in conjunction with the damper to meet the training requirements of higher precision.

[0056] In another embodiment of this utility model, multiple horizontal shafts 17 are provided on the horizontal lever arm tube 2, which can simultaneously suspend multiple barbell plates. By adjusting the position of different barbell plates in groups, a more complex resistance combination mode can be achieved.

[0057] In another embodiment of this utility model, a micro motor and controller are integrated on the drive linkage 21. The user inputs the target resistance value through a touch screen or remote control, and the motor automatically drives the sliding device 3 to the corresponding position, improving the convenience of adjustment (applicable to smart fitness equipment).

[0058] In another embodiment of this utility model, such as Figure 4 , 5 As shown, the transverse lever tube 2 can also be a circular tube, and both sides of one end are provided with a counterweight plate 26. Multiple rectangular counterweight blocks 27 are installed on the surface of the counterweight plate 26 by positioning bolts, and multiple rectangular counterweight blocks 27 are used to balance the weight of the equipment.

[0059] 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 of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A theft-proof, adjustable resistance fitness equipment with a weighted arm, applied to outdoor fitness equipment, the outdoor fitness equipment comprising a main frame (1), characterized in that, include: A transverse lever arm tube (2) is rotatably connected to the main frame (1) and extends in the front-rear direction; A sliding device (3) is slidably connected to the transverse lever tube (2) in the front-back direction, and a counterweight is provided on the sliding device (3). Linkage drive mechanism (4), the front end of which is connected to the sliding device (3); The positioning adjustment system (5) is connected to the transverse lever tube (2), and the rear end of the linkage drive mechanism (4) is connected to the positioning adjustment system (5).

2. The anti-theft adjustable resistance fitness equipment with a weighted arm according to claim 1, characterized in that, Also includes: A longitudinal support arm (15) is connected to the rear end of the transverse lever tube (2), and the longitudinal support arm (15) and the transverse lever tube (2) are L-shaped.

3. The anti-theft adjustable resistance fitness equipment with a weighted arm according to claim 2, characterized in that, Also includes: There are two horizontal shafts (17), which are respectively connected to the left and right ends of the sliding device (3). The axial direction of the horizontal shafts (17) is to the left and right. The counterweight is connected to both horizontal shafts (17). Flange (18) is connected to both of the two horizontal shafts (17), and the flange (18) is used to limit the counterweight.

4. The anti-theft adjustable resistance fitness equipment with a weighted arm according to claim 1, characterized in that, The sliding device (3) has a guide groove (19) that matches the transverse lever tube (2), and the sliding device (3) is slidably connected to the transverse lever tube (2) through the guide groove (19).

5. The anti-theft adjustable resistance fitness equipment with a weighted arm according to claim 3, characterized in that, The linkage drive mechanism (4) includes: Linkage lever arm (20), the front end of which is rotatably connected to the sliding device (3); A drive link (21) is provided, the rear end of which is rotatably connected to the rear end of the transverse lever arm tube (2), and the front end of which is hinged to the rear end of the lever arm (20).

6. The anti-theft adjustable resistance fitness equipment with a weighted arm according to claim 5, characterized in that, The linkage drive mechanism (4) also includes: A handle (22) is connected to the drive linkage (21).

7. The anti-theft adjustable resistance fitness equipment with a weighted arm according to claim 5, characterized in that, The positioning adjustment system (5) includes: Positioning disk (23), the positioning disk (23) is connected to the rear end of the transverse lever tube (2), and the positioning disk (23) has a plurality of positioning holes (25) distributed on it; Positioning pin (24) is connected to the drive link (21) and is used to be inserted into the positioning hole (25).

8. The anti-theft adjustable resistance fitness equipment with a weighted arm according to claim 6, characterized in that, The flange (18) is connected to the horizontal shaft (17) by anti-theft bolts, the heads of which are non-standard shapes; the connection between the sliding device (3) and the horizontal lever tube (2) is sealed.

9. The anti-theft adjustable resistance fitness equipment with a weighted arm according to claim 1, characterized in that, The transverse lever tube (2) can also be a circular tube, and a counterweight plate (26) is provided on both sides of one end. Multiple rectangular counterweight blocks (27) are installed on the surface of the counterweight plate (26) by positioning bolts.

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