Manual and electric dual-purpose three-rail sliding self-locking stair climber

Abstract

A manual and electric dual-purpose three-rail sliding self-locking stair climber, which is composed of a frame structure, a manual driving mechanism, a crawling claw mechanism, a control mechanism, an electric wire puller, a counterweight device and a fall arrester. There are two crawling claws on the left and right on three parallel rails, and the two crawling claws are respectively connected to a driving arm and a supporting arm. By operating the position of the clamping plate on the crawling claw, the moving direction of the crawling claw can be controlled. Pushing and pulling the driving arm can drive the two crawling claws to intermittently move left or right, so as to realize the up and down movement of the stair climber. Adopting the driving mode of a health cycle ergometer, applying fitness exercise to the practical use of the stair climber to enhance the practicality, interest and physical fitness-improving function of the stair climber; adjusting the stride size, time length and interruption of the drive at any time according to the physical condition of the operator; adopting a two-fixed-one-moving three-strand (rope) pulley block to make the moving distance of the counterweight short, labor-saving and save the space of the counterweight device; adopting a clamping plate self-locking mechanism to make the structure simple and the cost low; this stair climber is manual and electric dual-purpose, and the operator can choose arbitrarily.

Description

Technical Field

[0001] The present invention relates to a stair climbing machine, and in particular to a manual and electric dual-purpose three-track sliding self-locking stair climbing machine. Background Art

[0002] At present, there are many stair climbing machines on the market, but stair climbing machines that can be used manually for fitness are very rare. Existing stair climbing machines have a single application, are not combined with physical fitness, and lack interest and applicability. Summary of the Invention

[0003] To solve the above problems, the present invention provides a manual and electric dual-purpose three-track sliding self-locking stair climbing machine. This stair climbing machine organically combines the functions of a stair climbing machine and a fitness device. By imitating the principles of human walking and reptile walking, it adopts a three-track and a driving method of a familiar health bike (rowing sport) - the form of a reciprocating swinging rocker driving two crawling claws to alternately move on three cylindrical tracks to realize going up and down stairs.

[0004] The technical solution adopted by the present invention to solve its technical problems is: mainly composed of two major mechanisms, namely a main body mechanism and an accessory mechanism. The main body mechanism includes a frame structure, a manual driving mechanism, a crawling claw mechanism, and a control mechanism. The accessory mechanism includes an electric wire puller, a counterweight, and an anti-falling device.

[0005] The frame mechanism is the support frame of the installation frame structure, control mechanism, crawling claw mechanism, and manual driving mechanism of this stair climbing machine, and includes two track fixing plates, two support tracks, and one self-locking track. The track fixing plates include a first track fixing plate and a second track fixing plate. The first track fixing plate is fixedly installed on the left floor, and the second track fixing plate is fixedly installed on the right wall panel. Three track brackets are fixedly installed on each track fixing plate, and the above three tracks are fixedly installed on the track brackets.

[0006] The manual driving mechanism is composed of a driving arm, a support arm, an arm shaft, and a crawling claw shaft; both the driving arm and the support arm are long rod parts. The driving arm is composed of two mutually perpendicular rods of different lengths. A saddle is installed at the right end of the support arm; a through hole is provided at the upper end of the support arm, and this through hole is hinged to the through hole of the short rod of the driving arm by the arm shaft; a driving handle is provided at the upper end of the driving arm, and crawling claw shafts are respectively provided at the lower ends of the driving arm and the support arm, and are connected to the following crawling claw mechanism.

[0007] The crawling claw mechanism includes two crawling claws, namely the left crawling claw and the right crawling claw. Each crawling claw consists of a crawling claw shaft seat, a crawling claw shaft, a connecting plate, and two linear bearings. The crawling claw shaft seat is a symmetric body in the front-back and left-right directions, with a through slot from left to right. A driving arm is installed in the left crawling claw slot, and a support arm is installed in the right crawling claw slot. The crawling claw shaft seat is provided with a circular hole and a slide bar slide hole from front to back. The crawling claw shaft is arranged in the circular hole. The crawling claw shaft of the left crawling claw is hinged to the through hole at the lower end of the driving arm, and the crawling claw shaft of the right crawling claw is hinged to the through hole at the lower end of the support arm. The crawling claw shaft seat is fixed on the connecting plate. The connecting plate is a rectangular plate, and linear bearings are respectively fixed at the front and rear ends. The inner holes of the front and rear linear bearings are respectively arranged on the front and rear support tracks.

[0008] On the connecting plate of the left crawling claw mechanism, pedal mechanisms are symmetrically installed at the front and rear ends. Each pedal mechanism consists of a slide plate, a front slider, a rear slider, a slider connecting rod, and a pedal. The pedal mechanism is fixed on the connecting plate. The slide plate is provided with a slide slot. The slide plate is a U-shaped columnar body. The slide slot is provided with a left slider and a right slider. The slider is provided with a locking screw and a slider shaft. The slider shaft on the left slider is hinged to the lower end of the slider connecting rod, the upper end of the slider connecting rod is hinged to the upper connecting rod shaft of the pedal, and the slider shaft on the right slider is hinged to the right end of the pedal.

[0009] The control mechanism consists of a clamping plate, a clamping plate handle, a self-locking hole, a spring connecting rod, a crawling claw shaft seat, a slide bar, and a spring. The clamping plate base is a rectangular plate, and a self-locking hole is provided on the plate. The self-locking hole is an oblong hole, and the self-locking hole is arranged on the self-locking track. Symmetric clamping plate connection blocks are provided on the front and rear sides at the upper end of the clamping plate. Cylindrical through holes in the front-back direction are provided on the clamping plate connection blocks. A kidney-shaped through hole is provided below the cylindrical through hole, and a clamping plate handle is provided on the right side. The cylindrical through hole on the clamping plate connection block is arranged on the crawling claw shaft. The kidney-shaped through hole on the clamping plate corresponds to the slide bar slide hole of the crawling claw shaft seat. A slide bar is installed in the slide bar slide hole. The slide bar is a cylinder, passing through the outside of the kidney-shaped through hole from front to back, and connecting the upper ends of the springs at both ends. The lower slideway in the slide bar slide hole is in an "M" shape. A spring connecting rod is provided on the side of the lower end of the clamping plate, and the spring connecting rod connects the lower end of the spring.

[0010] The accessory mechanism consists of a counterweight, a pulley, a counterweight wire, an electric wire puller, and a fall arrester. The counterweight includes a counterweight wire, a wire fixed end, a counterweight movable pulley, a counterweight moving block, a counterweight block, etc. The counterweight moving block is provided with a wire fixed end and a counterweight movable pulley, and the wire fixed end is fixedly connected with a counterweight wire. The connection line of the counterweight wire is: one end of the counterweight wire is connected to the wire fixed end, bypasses the first pulley above, then bypasses the counterweight movable pulley of the counterweight, rises to another first pulley, turns to the second pulley, turns to the third pulley, passes downward through the electric wire puller to the fourth pulley, turns and is connected to the counterweight hook of the right crawling claw, and the counterweight hook is fixedly connected to the connecting plate of the right crawling claw.

[0011] The electric wire puller is the electric drive device of this stair climber. The electric wire puller is fixedly installed on the wall. The electric wire puller drives four pressure wheels to rotate by a motor, driving the counterweight wire to move up and down. The four pressure wheels are divided into two groups, with two pressure wheels paired in each group. The counterweight wire is arranged between the two paired pressure wheels.

[0012] The anti-falling device is a safety protection device for this stair climber to prevent sudden out-of-control falling. It consists of an anti-falling hook ring, an anti-falling wire, and an anti-falling device. The anti-falling device is fixedly installed on the wall. The lower end of the anti-falling wire is fixedly connected to the anti-falling hook ring. The anti-falling hook ring is fixedly connected to the connecting plate of the right climbing claw. The upper end of the anti-falling wire is wound around the retractor of the anti-falling device.

[0013] The beneficial effects of the present invention are as follows: adopting the exercise bike drive mode, applying fitness exercise in practice to enhance the practicality, interestingness, and physical fitness improvement of the stair climber; being flexible and convenient to operate - adjusting the stride size, time length, and interruption of the drive at any time according to the operator's physical condition; adopting a two-fixed-one-moving three-strand rope pulley block to make the movement distance of the counterweight short, labor-saving, and save space for the counterweight device; adopting a clamping plate self-locking mechanism to make the structure simpler and the cost lower; this stair climber is both manually and electrically operated, and the operator can choose arbitrarily. Brief Description of the Drawings

[0014] The present invention will be further described below with reference to the drawings and embodiments.

[0015] Figure 1 is a three-dimensional view showing the overall structure;

[0016] Figure 2 is the front view;

[0017] Figure 3 is the left view;

[0018] Figure 4 is Figure 3 a cross-sectional view taken along the upper edge AA;

[0019] Figure 5 is Figure 3 a partial cross-sectional view of the footrest taken along the upper edge BB;

[0020] Figure 6 is an embodiment diagram of the adjustable angle of the footrest;

[0021] Figure 7 is Figure 3 a cross-sectional view taken along the upper edge CC, and is cut along the axis of the spring; mainly showing the overall structure of the clamping plate and the connection relationship between the overall structure of the clamping plate and the slide rod and the spring, as well as the working principle of the control mechanism;

[0022] Figure 8 is an embodiment diagram of the clamping plate in the left blocking position;

[0023] Figure 9 It is an embodiment diagram of the pallet in the right stop position;

[0024] Figure 10 It is an embodiment diagram of the pallet in the neutral position;

[0025] Figure 11 It is an embodiment diagram of the drive handle of the drive arm pushed to the leftmost position;

[0026] Figure 12 It is an embodiment diagram of the left and right crawling claw pallets in the main body mechanism turning in opposite directions (locking and moving).

[0027] In the figure: 1. Counterweight, 2. First pulley, 3. Counterweight wire, 4. Track bracket, 5. Support track, 6. Self-locking track, 7. Locking screw, 8. Slide block shaft, 9. Slide block connecting rod, 10. Foot pedal, 11. Arm shaft, 12. Left support arm, 13. Drive arm, 14. Right support arm, 15. Drive handle, 16. Saddle, 17. Fall arrester, 18. Electric wire puller, 19. Second pulley, 20. Second track fixing plate, 21. Fall arrester wire, 22. Spring, 23. Connecting plate, 24. Linear bearing, 25. Slideway plate, 26. Crawling claw shaft, 27. Crawling claw shaft seat, 28. Counterweight hook, 29. Spring connecting rod, 30. Pallet, 31. Pallet handle, 32. Slide rod, 33. Left slide block, 34. Right slide block, 35. Upper connecting rod shaft, 36. Slide rod slideway hole, 37. Waist-shaped through hole, 38. Self-locking hole, 39. First track fixing plate, 40. Counterweight block, 41. Counterweight moving block, 42. Counterweight movable pulley, 43. Wire fixing end, 44. Fourth pulley, 45. Third pulley, 46. Pallet connecting block, 47. Fall arrester hook. Detailed implementation manners

[0028] Figures 1 to 5 、 Figure 7 It shows the structural composition of this stair climber and the connection and position relationships of its components. It mainly consists of two major mechanisms: the main body mechanism and the accessory mechanism. The main body mechanism includes a frame structure, a manual drive mechanism, a crawling claw mechanism, and a control mechanism. The accessory mechanism includes an electric wire puller 18, a counterweight 1, and a fall arrester 17. The structural composition, size, and shape of the entire main body mechanism are symmetric front and back.

[0029] Such as Figures 1 to 3As shown in the figure, the frame mechanism is the support frame of the installation control mechanism, the crawling claw mechanism, and the manual driving mechanism of this stair climbing machine, including two track fixing plates, two support tracks 5, and a self-locking track 6. The track fixing plates include a first track fixing plate 39 and a second track fixing plate 20. The first track fixing plate 39 is fixedly installed on the left floor, and the second track fixing plate 20 is fixedly installed on the right wall panel. Three track brackets 4 are fixedly installed on each track fixing plate, and the above three tracks are fixedly installed on the track brackets 4. The three tracks are all columnar and of equal length, parallel to each other. The self-locking track 6 is in the middle, and the two support tracks 5 are symmetrically arranged on both sides of the self-locking track 6.

[0030] As Figures 1 to 4 shown in the figure, the manual driving mechanism is composed of a driving arm 13, a support arm, an arm shaft 11, and a crawling claw shaft 26; both the driving arm 13 and the support arm are long rod parts. The driving arm 13 is composed of two mutually perpendicular rods of different lengths. There is a through hole at the end of the short rod. The support arm is composed of a left support arm 12 and a right support arm 14. There are connection holes at the lower part of the left support arm 12 and the upper part of the right support arm 14. The left support arm 12 and the right support arm 14 are fixedly connected by two connection bolts. Adjusting different connection holes can adjust the length of the support arm. A saddle 16 is installed at the right end of the right support arm 14; there is a through hole at the upper end of the left support arm 12, and this through hole is hinged to the through hole of the short rod of the driving arm by the arm shaft 11; the driving arm 13 and the support arm can rotate around the arm shaft 11. A driving handle 15 is provided at the upper end of the driving arm. Through holes are respectively provided at the lower ends of the driving arm 13 and the support arm, and a crawling claw shaft 26 is installed in the through holes and is connected to the crawling claw mechanism below it.

[0031] As Figures 1 to 4 and Figure 7 、 Figure 8 shown in the figure, the crawling claw mechanism includes two crawling claws, which have exactly the same structure, size, and shape, and are divided into a left crawling claw and a right crawling claw. Each crawling claw is composed of a crawling claw shaft seat 27, a crawling claw shaft 26, a connecting plate 23, and two linear bearings 24. The crawling claw shaft seat 27 is a symmetric body in the front-back and left-right directions, and is provided with a through groove from left to right. The driving arm 13 is installed in the left crawling claw groove, and the support arm is installed in the right crawling claw groove; the crawling claw shaft seat 27 is provided with a round hole and a slide bar slide hole 36 from front to back. The crawling claw shaft 26 is provided in the round hole. The crawling claw shaft 26 of the left crawling claw is hinged to the through hole at the lower end of the driving arm, and the crawling claw shaft 26 of the right crawling claw is hinged to the through hole at the lower end of the support arm. The driving arm 13 and the support arm can rotate around the crawling claw shaft 26; the crawling claw shaft seat 27 is fixed on the connecting plate 23. The connecting plate 23 is a rectangular plate. Linear bearings 24 are respectively fixedly connected to the front and rear ends. The inner holes of the front and rear two linear bearings 24 are respectively arranged on the front and rear two support tracks 5. The two linear bearings 24 of each crawling claw can move left and right synchronously on the support track 5.

[0032] As Figure 1 、 Figure 5As shown in the figure, pedal mechanisms are symmetrically installed at the front and rear ends of the connecting plate 23 of the left crawling claw mechanism. The pedal mechanisms are used to adjust the tilt angle of the pedal 10. The two pedal mechanisms have the same structure, size and shape. Each pedal mechanism consists of a slideway plate 25, a front slider, a rear slider, a slider connecting rod 9 and a pedal 10. The pedal mechanism is fixed on the connecting plate 23. The slideway plate 25 is provided with a slideway slot inside. The slideway plate 25 is a U-shaped columnar body. Inside the slideway slot, there are a left slider 33 and a right slider 34. The left slider 33 and the right slider 34 can slide left and right in the slideway slot. The slider is provided with a locking screw 7 and a slider shaft 8. The locking screw 7 is used to lock the position of the slider on the slideway plate 25. The slider shaft 8 on the left slider 33 is hinged to the lower end of the slider connecting rod 9. The upper end of the slider connecting rod 9 is hinged to the upper connecting rod shaft 35 of the pedal 10. The slider shaft 8 on the right slider 34 is hinged to the right end of the pedal 10. Moving the positions of the left slider 33 and the right slider 34 can adjust the tilt angle of the pedal 10 (as Figure 6 shown) to meet the needs of people with different heights and sitting postures.

[0033] As Figure 1 , Figure 7 , Figure 8 shown, the control mechanism consists of a clamping plate 30, a clamping plate handle 31, a self-locking hole 38, a spring connecting rod 29, a crawling claw shaft seat 27, a sliding rod 32 and a spring 22. The base of the clamping plate 30 is a rectangular plate. There is a self-locking hole 38 on the plate. The self-locking hole 38 is an oblong hole. The self-locking hole 38 is arranged on the self-locking track 6. On the front and rear sides of the upper end of the clamping plate 30, there are symmetrically arranged clamping plate connection blocks 46. There is a cylindrical through hole in the front and rear directions on the clamping plate connection block 46. There is an oblong through hole 37 below the cylindrical through hole. There is a clamping plate handle 31 on the right side. The cylindrical through hole on the clamping plate connection block 46 is arranged on the crawling claw shaft 26. The clamping plate 30 can swing left and right around the crawling claw shaft 26. The oblong through hole 37 on the clamping plate 30 corresponds to the sliding rod slideway hole 36 of the crawling claw shaft seat 27. A sliding rod 32 is installed in the sliding rod slideway hole 36. The sliding rod 32 is a cylinder and runs through the outside of the oblong through hole 37 from front to back. The upper ends of the two springs 22 are connected to both ends respectively. The sliding rod 32 can move left and right in the sliding rod slideway hole 36 under the pulling of the spring 22. The lower slideway in the sliding rod slideway hole 36 is in an "M" shape, with the middle and the left and right sides being lower, which are the positioning grooves for the left, middle and right positions of the sliding rod 32. On the side of the lower end of the clamping plate 30, there is a spring connecting rod 29, and the spring connecting rod 29 is connected to the lower end of the spring 22.

[0034] As Figures 1 to 4As shown in the figure, the affiliated mechanism consists of a counterweight 1, pulleys, a counterweight wire 3, an electric wire puller 18, and a fall arrester 17. The counterweight 1 is a balancing device for the driving force of the stair climber when going upstairs and downstairs. It adopts a two-fixed-one-movable three-strand rope pulley block, that is, a pulley device pulled by two fixed pulleys, one movable pulley, and three strands of ropes. The counterweight 1 includes a counterweight wire 3, a wire fixed end 43, a counterweight movable pulley 42, a counterweight moving block 41, counterweight blocks 40, etc. The counterweight moving block 41 is provided with a wire fixed end 43 and a counterweight movable pulley 42. The wire fixed end 43 is fixedly connected to a counterweight wire 3. There can be several counterweight blocks 40 according to needs, which are divided into selected counterweight blocks and standby counterweight blocks. The selected counterweight blocks and the counterweight moving block 41 are connected as a whole and can move up and down. The connection line of the counterweight wire 3 is: one end of the counterweight wire is connected to the wire fixed end 43, bypasses the upper first pulley 2, then bypasses the counterweight movable pulley 42 of the counterweight 1 and rises to another first pulley 2, turns to the second pulley 19, turns to the third pulley 45, goes down through the electric wire puller 18 to the fourth pulley 44, and turns to be connected to the counterweight hook 28 of the right climbing claw. The counterweight hook 28 is fixedly connected to the connecting plate 23 of the right climbing claw. The right climbing claw moves left and right on the support track 5, and drives the counterweight moving block 41, the counterweight movable pulley 42, and the selected counterweight blocks to move up and down through the counterweight wire 3.

[0035] As Figure 1 , Figure 4 shown in the figure, the electric wire puller 18 is the electric driving device of this stair climber. The electric wire puller 18 is fixedly installed on the wall. The electric wire puller 18 is driven by a motor to drive four pressure wheels to rotate, driving the counterweight wire 3 to move up and down. The four pressure wheels are divided into two groups, and each group has two pressure wheels paired. The counterweight wire 3 is arranged between the two paired pressure wheels. The two paired pressure wheels can be set in two states: tightened and separated. The tightened state is used for the electric drive of this stair climber; the separated state is used for the manual drive of this stair climber.

[0036] As Figure 1 , Figure 2 shown in the figure, the fall arrester 17 is a safety protection device for preventing the stair climber from suddenly getting out of control and falling. It consists of a fall arrest hook 47, a fall arrest wire 21, and a fall arrester 17. The fall arrester 17 is fixedly installed on the wall. The lower end of the fall arrest wire 21 is fixedly connected to the fall arrest hook 47. The fall arrest hook 47 is fixedly connected to the connecting plate 23 of the right climbing claw. The upper end of the fall arrest wire 21 is wound around the reel of the fall arrester 17. The reel of the fall arrester 17 is a ratchet mechanism. Under normal circumstances when the stair climber is manually or electrically driven to lift and lower at a low speed, the reel rotates accordingly. However, when the stair climber suddenly gets out of control and falls, the rotation speed of the reel increases, and the ratchet mechanism will perform a locking action to automatically lock the fall arrest wire 21, and the stair climber stops sliding, thus playing a role in safety protection.

[0037] Figure 11It is an embodiment diagram where the driving arm 13 is pushed to the leftmost position; it represents the state where the driving arm 13 is pushed to the leftmost limit position.

[0038] Figure 8 It is an embodiment where the clamping plate 30 is in the left blocking position, and it also represents the position of the clamping plate 30 when the climbing claw moves to the left: when the clamping plate handle 31 is moved downward, the clamping plate 30 tilts to the left, and the edge of the self-locking hole 38 on the clamping plate 30 catches the self-locking track 6, and the climbing claw cannot move to the right; at the same time, the spring connecting rod 29 on the clamping plate 30 drives the spring 22 to move to the left, and the spring 22 pulls the sliding rod 32 to the left positioning groove of the sliding rod slide hole 36; when the driving arm 13 is pushed and pulled to drive the climbing claw to move to the left, the clamping plate 30 rotates to the right relative to the self-locking track 6, getting rid of the self-locking with the self-locking track 6, and the climbing claw can move to the left. To sum up, when the clamping plate 30 is in the left blocking position, the climbing claw can only move to the left and cannot move to the right.

[0039] Figure 9 It is an embodiment where the clamping plate 30 is in the right blocking position; it represents the position of the clamping plate 30 when the climbing claw moves to the right: when the clamping plate handle 31 is moved upward, the clamping plate 30 tilts to the right, and the edge of the self-locking hole 38 on the clamping plate 30 catches the self-locking track 6, and the climbing claw cannot move to the left; at the same time, the spring connecting rod 29 on the clamping plate 30 drives the spring 22 to move to the right, and the spring 22 pulls the sliding rod 32 to the right positioning groove of the sliding rod slide hole 36; when the driving arm 13 is pushed and pulled to drive the climbing claw to move to the right, the clamping plate 30 rotates to the left relative to the self-locking track 6, getting rid of the self-locking with the self-locking track 6, and the climbing claw can move to the right. To sum up, when the clamping plate 30 is in the right blocking position, the climbing claw can only move to the right and cannot move to the left.

[0040] Figure 10 It is an embodiment diagram where the clamping plate 30 is in the neutral position: it means that the clamping plate 30 is perpendicular to the self-locking track 6, and the sliding rod 32 is pulled by the spring 22 to the middle positioning groove of the sliding rod slide hole 36; the self-locking hole 38 on the clamping plate 30 does not contact the self-locking track 6, and the clamping plate 30 and the climbing claw can move left and right on the self-locking track 6.

[0041] Figure 11 It is an embodiment diagram where the clamping plates 30 of the left and right climbing claws turn in opposite directions (locking movement), the clamping plate 30 of the left climbing claw is in the left blocking position and cannot move to the right, the clamping plate 30 of the right climbing claw is in the right blocking position and cannot move to the left, and the stair climbing machine is locked in movement.

[0042] When operating this stair climbing machine, the operator first selects the weight of the counterweight 40 (the climbing claw will not slide freely when the operator sits on the saddle 16), adjusts the inclination angle of the footrest 10, sits on the saddle 16, steps on the left and right footrests 10 with both feet, and holds the driving handle 15 with both hands. There are four operation forms for this stair climbing machine: driving downstairs with hands and feet, driving upstairs with hands and feet, driving up and down electrically, and manually locking the movement.

[0043] Operation of moving downstairs by hands and feet: In this embodiment, the stair climber moves to the left. The electric wire puller 18 is in a separated state, that is, the pressing wheel releases the counterweight wire 3. The stair climber is in a locked moving state where the two crawling claws on the left and right have opposite turning directions. Pull down the clamping plate handle 31 on the left and right crawling claws, and the clamping plate 30 tilts to the left. As shown in Figure 8 , Figure 4 , the two crawling claws on the left and right can only move to the left. Pull the driving arm 13 to the right, the right crawling claw does not move, and the left crawling claw moves to the left. When pushing the driving arm 13 to the left, the left crawling claw does not move, and the right crawling claw moves to the left. Push and pull the driving arm 13 reciprocally to achieve the intermittent leftward movement of the stair climber - moving downstairs.

[0044] Operation of moving upstairs by hands and feet: In this embodiment, the stair climber moves to the right. Pull up the clamping plate handle 31 on the left and right crawling claws, and the clamping plate 30 tilts to the right. As shown in Figure 9 , the two crawling claws on the left and right can only move to the right. Pull the driving arm 13 to the right, the left crawling claw does not move, and the right crawling claw moves to the right. When pushing the driving arm 13 to the left, the right crawling claw does not move, and the left crawling claw moves to the right. Push and pull the driving arm 13 reciprocally to achieve the intermittent rightward movement of the stair climber - moving upstairs.

[0045] Operation of moving upstairs and downstairs by electric drive: Move the clamping plate handle 31 on the left and right crawling claws to the neutral position, that is, the middle position of the clamping plate handle 31 on the left and right crawling claws. The clamping plate 30 is perpendicular to the self-locking track 6. As shown in Figure 10 , the clamping plate self-locking hole 38 does not contact the track, and the left and right crawling claws can move left and right. Operate the electric wire puller 18 to the pressing state, that is, the pressing wheel of the electric wire puller 18 presses the counterweight wire 3. Operate the electric wire puller 18 to rotate forward, and the pressing wheel of the electric wire puller 18 drives the counterweight wire 3 to rise, dragging the stair climber upstairs. Operate the electric wire puller 18 to rotate in reverse, and the pressing wheel of the electric wire puller 18 drives the counterweight wire 3 to descend, and the stair climber slides down under the action of gravity - achieving moving upstairs.

[0046] Manual locking movement operation: After use or when it is necessary to stop during moving upstairs and downstairs, move the clamping plate handle 31 on the left and right crawling claws to make the two clamping plates 30 tilt in opposite directions, and the moving directions of the left and right crawling claws are limited to be opposite, so that the entire stair climber locks its movement (as shown in Figure 12 ).

Claims

1. A manual and electric dual-purpose three-rail sliding self-locking stair climber, mainly composed of two major mechanisms: a main body mechanism and an accessory mechanism. The main body mechanism includes a frame structure, a manual driving mechanism, a crawling claw mechanism, and a control mechanism. The accessory mechanism includes an electric wire puller, a counterweight, and a fall arrester; characterized in that: The frame mechanism is the support frame for the installation frame structure, control mechanism, crawling claw mechanism, and manual drive mechanism of this stair climber. It includes two track fixing plates, two support tracks, and one self-locking track. The track fixing plates include the first track fixing plate and the second track fixing plate. The first track fixing plate is fixedly installed on the left floor, and the second track fixing plate is fixedly installed on the right wall panel. Three track brackets are fixedly installed on each track fixing plate, and three tracks are fixedly installed on the track brackets. All three tracks are columnar and of equal length, parallel to each other. The self-locking track is in the middle, and the two support tracks are symmetrically arranged on both sides of the self-locking track. The manual drive mechanism consists of a drive arm, a support arm, an arm shaft, and a crawling claw shaft. The drive arm and the support arm are both long rod parts. The drive arm consists of two perpendicular rods of different lengths. The support arm consists of a left support arm and a right support arm. Connecting holes are provided at the lower part of the left support arm and the upper part of the right support arm. The left support arm and the right support arm are fixedly connected by two connecting bolts. By connecting different connecting holes, the length of the support arm can be adjusted. A saddle is installed at the right end of the support arm. A through hole is provided at the upper end of the support arm, and this through hole is hinged to the through hole of the short rod of the drive arm by the arm shaft. A drive handle is provided at the upper end of the drive arm. Crawling claw shafts are respectively provided at the lower ends of the drive arm and the support arm, and are connected to the crawling claw mechanism below. The crawling claw mechanism includes two crawling claws, namely a left crawling claw and a right crawling claw. Each crawling claw consists of a crawling claw shaft seat, a crawling claw shaft, a connecting plate, and two linear bearings. The crawling claw shaft seat is a symmetric body in the front-back and left-right directions, and is provided with a through groove from left to right. The drive arm is installed in the left crawling claw groove, and the support arm is installed in the right crawling claw groove. The crawling claw shaft seat is provided with a round hole and a slide bar slide hole from front to back. The crawling claw shaft is provided in the round hole. The crawling claw shaft of the left crawling claw is hinged to the through hole at the lower end of the drive arm, and the crawling claw shaft of the right crawling claw is hinged to the through hole at the lower end of the support arm. The drive arm and the support arm can rotate around the crawling claw shaft. The crawling claw shaft seat is fixed on the connecting plate. The connecting plate is a rectangular plate. Linear bearings are respectively fixedly connected to the front and rear ends. The inner holes of the front and rear two linear bearings are respectively arranged on the front and rear two support tracks. The two linear bearings of each crawling claw can move left and right synchronously on the support track. Pedal mechanisms are symmetrically installed at the front and rear ends of the connecting plate of the left crawling claw mechanism. Each pedal mechanism consists of a slideway plate, a front slider, a rear slider, a slider connecting rod, and a pedal. The pedal mechanism is fixed on the connecting plate. The slideway plate is provided with a slideway slot inside. The slideway plate is a U-shaped columnar body. A left slider and a right slider are provided in the slideway slot. The left slider and the right slider can slide left and right in the slideway slot. Locking screws and slider shafts are provided on the sliders. The locking screws are used to lock the position of the sliders on the slideway plate. The slider shaft on the left slider is hinged to the lower end of the slider connecting rod, and the upper end of the slider connecting rod is hinged to the upper connecting rod shaft of the pedal. The slider shaft on the right slider is hinged to the right end of the pedal. By moving the positions of the left slider and the right slider, the tilt angle of the pedal can be adjusted to meet the needs of people with different heights and sitting postures. The control mechanism consists of a clamping plate, a clamping plate handle, a self-locking hole, a spring connecting rod, a crawling claw shaft seat, a slide bar, and a spring.The pallet base is a rectangular plate, on which there are self-locking holes. The self-locking holes are oblong holes and are arranged on the self-locking track. On the front and rear sides of the upper end of the pallet, there are symmetrically arranged pallet connecting blocks. On the pallet connecting blocks, there are cylindrical through holes in the front-back direction. Below the cylindrical through holes, there are waist-shaped through holes, and on the right side, there is a pallet handle. The cylindrical through holes on the pallet connecting blocks are arranged on the crawling claw shaft. The waist-shaped through holes on the pallet correspond to the slide rod slide holes of the crawling claw shaft seat. Inside the slide rod slide holes, there are slide rods installed. The slide rods are cylinders, passing through the outside of the waist-shaped through holes in the front-back direction, and connecting the upper ends of springs at both ends. The slide rods can move left and right in the slide rod slide holes under the pull of the springs. The lower slideways in the slide rod slide holes are in an "M" shape, with the middle and the left and right sides being lower, which are the positioning grooves for the left, middle, and right positions of the slide rods. On the side of the lower end of the pallet, there is a spring connecting rod, and the spring connecting rod connects the lower end of the spring. The accessory mechanism consists of a counterweight, a pulley, a counterweight wire rope, an electric wire rope puller, and a fall arrester. The counterweight is a balance device for the driving force of the stair climber going up and down the stairs. It adopts a two-fixed-one-movable three-strand rope pulley block, which includes two fixed pulleys, one movable pulley, and three strands of ropes. The counterweight includes a counterweight wire rope, a wire rope fixed end, a counterweight movable pulley, a counterweight moving block, and counterweight blocks. On the counterweight moving block, there are a wire rope fixed end and a counterweight movable pulley. The wire rope fixed end is fixedly connected with a counterweight wire rope. There can be several counterweight blocks according to needs, divided into selected counterweight blocks and standby counterweight blocks. The selected counterweight blocks and the counterweight moving block are connected into one body and can move up and down. The connection line of the counterweight wire rope is: one end of the counterweight wire rope is connected to the wire rope fixed end, bypasses the upper first pulley, then bypasses the counterweight movable pulley of the counterweight, rises to another first pulley, turns to the second pulley, turns to the third pulley, passes downward through the electric wire rope puller to the fourth pulley, and turns to connect to the counterweight hook ring of the right crawling claw. The counterweight hook ring is fixedly connected to the connecting plate of the right crawling claw. The right crawling claw moves left and right on the support track, driving the counterweight moving block, the counterweight movable pulley, and the selected counterweight blocks to move up and down through the counterweight wire rope. The electric wire rope puller is the electric driving device of this stair climber. The electric wire rope puller is fixedly installed on the wall. The electric wire rope puller drives the counterweight wire rope to move up and down by the motor driving four pressure wheels to rotate. The four pressure wheels are divided into two groups, and each group has two paired pressure wheels. The counterweight wire rope is arranged between the two paired pressure wheels. The two paired pressure wheels can be in two states: tightened and separated. In the tightened state, it is used for the electric drive of this stair climber; in the separated state, it is used for the manual drive of this stair climber. The fall arrester is a safety protection device for this stair climber to prevent sudden out-of-control falling. It consists of a fall arrest hook ring, a fall arrest wire rope, and a winch. The fall arrester is fixedly installed on the wall. The lower end of the fall arrest wire rope is fixedly connected to the fall arrest hook ring. The fall arrest hook ring is fixedly connected to the connecting plate of the right crawling claw. The upper end of the fall arrest wire rope is wound around the winch of the fall arrester. The winch of the fall arrester is a ratchet mechanism.;

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