Intelligent adjusting lifting device for pull-up training

Abstract

The invention discloses an intelligent adjusting lifting device for pull-up training, which comprises a base, two symmetrical supporting blocks arranged on the left side and the right side of the base, a ladder plate arranged on the front side of the base, a buffer mechanism arranged in the base, a training mechanism arranged in the supporting blocks, and an adjusting mechanism arranged between the supporting blocks and a lifting block. The pedal is arranged in the buffer mechanism and can provide support when a person falls off, the rotating handrail can be held by the trainee through rotation, the voice recognizer is arranged in the training mechanism and can control an adjusting motor, and the adjusting threaded shaft can be connected with a balancing weight through a rotating thread. A connecting block capable of adjusting the position according to the height of the trainee and two rotating handles capable of adjusting the distance according to the shoulder breadth of the trainee are arranged in the adjusting mechanism, so that it is guaranteed that the trainee can train in a correct posture, and the training effect is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of intelligent adjustment technology, and in particular to an intelligent adjustment lifting device for pull-up training. Background Art

[0002] Pull-ups are one of the optional items in the physical education middle school entrance examination and high school physical education examination. They mainly test the development level of upper limb muscle strength. They are an examination item for male upper limb strength and a hanging strength exercise that overcomes one's own gravity with one's own strength. It is the most basic way to exercise the back and is also one of the important reference standards and items for measuring male physique. Pull-ups require men to have a certain grip strength, upper limb strength and shoulder girdle strength. This strength must be able to overcome one's own weight to complete it once. Pull-ups play an important role in developing upper limb hanging strength, shoulder girdle strength and grip strength. It is calculated by the number of times completed according to the movement specifications. The more you do, the better the score. Therefore, it is a strength endurance project. Many beginners often find it difficult to complete the training and achieve the training effect due to the weak back muscle group and the inability of the forearm to continuously exert force. Pull-ups require a lot of arm strength and waist and abdominal strength. For obese people and those with reduced physical strength in middle-aged and elderly people, they can only look at the bar and sigh. When practicing, beginners and heavier people often need to provide auxiliary force to complete the corresponding training.

[0003] The patent application number is CN201520336912.6, which discloses a pull-up booster and a pull-up training device. The pull-up booster includes a fixing device for cooperating with a horizontal bar and an elastic band connected to the fixing device, and the pull-up training device includes the pull-up booster as described above and a frame cooperating with the pull-up booster. The pull-up booster and the pull-up training device have a simple structure, high safety, and good assisting effect, but the device uses an elastic booster, and most pull-up boosters are elastic devices. As the body moves, the elastic force provided by the elastic device changes continuously, and cannot provide a constant auxiliary pulling force. Summary of the invention

[0004] To solve the above problems, the present invention is implemented through the following technical solutions:

[0005] An intelligent adjustable lifting device for pull-up training comprises a base, two symmetrical support blocks are arranged on the left and right sides of the base, a lifting block is arranged on the upper side of the support block, a ladder is arranged on the front side of the base, a buffer mechanism is arranged in the base, a training mechanism is arranged in the support block, an adjustment mechanism is arranged between the support block and the lifting block, the buffer mechanism can play a buffering role to prevent accidents, the training mechanism can adjust the training difficulty, and the adjustment mechanism can adapt to the training of different personnel.

[0006] Preferably, the buffer mechanism includes a buffer cavity provided in the base, the lower end wall of the buffer cavity is fixedly connected with two buffer blocks symmetrically on the left and right, the buffer block is provided with a hydraulic oil cavity, the upper end wall of the hydraulic oil cavity is provided with a pressure limiting cavity communicated with the hydraulic oil cavity, a hydraulic plate is slidably connected in the hydraulic oil cavity, a hydraulic spring is connected between the hydraulic plate and the end wall of the hydraulic oil cavity, the upper end wall of the hydraulic oil cavity is provided with two contact sensors symmetrically on the left and right that can sense the hydraulic plate, a liquid pusher plate is slidably connected in the pressure limiting cavity, and the liquid pusher plate is fixedly connected with one end located at The connecting rod in the buffer chamber is fixedly connected with a pedal located in the buffer chamber, a pressure limiting valve is provided in the pressure limiting chamber, two hydraulic chambers are symmetrically provided in the left and right end walls of the buffer chamber, the hydraulic chamber can be connected with the pressure limiting chamber through the pressure limiting valve, a push plate is slidably connected in the hydraulic chamber, the push plate is fixedly connected with a rack block with one end located outside, the support block is rotatably connected with two front-and-rear symmetrical rotating wheels on one end face close to the symmetry center, a rotating armrest is connected between the two left-and-right symmetrical rotating wheels, and the rack block is meshed with the rotating wheel.

[0007] Preferably, the training mechanism includes an adjustment cavity provided in the support block, a lifting motor is provided in the lower end wall of the adjustment cavity, the lifting motor is powered by a telescopic shaft having one end located in the adjustment cavity, the telescopic shaft is fixedly connected to a load-bearing plate, seven groups of counterweight blocks are stacked on the load-bearing plate, a connecting shaft sleeve is provided running through the upper and lower ends of the counterweight block, the adjustment cavity is slidably connected with an adjustment block, a counterweight spring is connected between the adjustment block and the upper end wall of the adjustment cavity, a group of reversing wheels is provided at the upper end of the support block, a steel wire rope that is turned by the reversing wheel is connected between the adjustment block and the pedal, and a sliding cavity is provided in the adjustment block, a sliding plate is slidably connected in the sliding cavity, the lower end surface of the sliding plate is fixedly connected with the adjustment motor, the adjustment motor is powered by a telescopic shaft having one end located in the adjustment cavity, an internally threaded shaft sleeve is provided in the lower end wall of the sliding cavity, the adjustment threaded shaft is threadedly connected to the internally threaded shaft sleeve, and the adjustment threaded shaft can be threadedly connected to the connecting shaft sleeve.

[0008] Preferably, the adjustment mechanism includes a threaded shaft sleeve with one end located in the internal threaded shaft sleeve and rotatably connected to the upper end face of the support block, a lifting block is provided on the upper side of the support block, the lifting block is threadedly connected to the threaded shaft sleeve, a connecting block is connected between the two lifting blocks, a shaft sleeve cavity is provided in the threaded shaft sleeve, the adjustment motor is powered and connected to a power shaft with one end located in the shaft sleeve cavity, a sliding block fixedly connected to the power shaft is slidably connected in the shaft sleeve cavity, a threaded shaft cavity is provided in the connecting block, two threaded sliders symmetrically connected in the threaded shaft cavity are slidably connected, a driving motor is provided in the connecting block, the driving motor is powered and connected to a bidirectional threaded shaft with one end located in the threaded shaft cavity, the two threaded sliders are threadedly connected to the bidirectional threaded shaft, the threads of the two threaded sliders are in opposite directions, a rotating handle is rotatably connected to the lower end face of the threaded slider, an observation lens is fixedly connected to the front end face of the connecting block, the observation lens can observe data such as a person's height and shoulder width, and a voice recognizer is installed on the left support block, and the voice recognizer can recognize a person's voice.

[0009] The present invention provides an intelligent adjustable lifting device for pull-up training, which has the following beneficial effects: the present invention provides a buffer mechanism, thereby providing a pedal in the buffer mechanism that can provide support when a person falls, and a rotating armrest that can be rotated so that the trainee can hold on, thereby avoiding the risk of falling and injury due to loss of strength or muscle strain and inability to hold the rotating handle tightly, and at the same time avoiding secondary injury due to unstable standing after falling. The present invention provides a training mechanism, thereby adjusting the training difficulty through a voice recognizer that can control an adjustment motor and an adjustment threaded shaft that can rotate a threaded counterweight block, so that the trainee can gradually adapt to the training intensity and ensure the training effect. The present invention provides an adjustment mechanism, thereby providing a connecting block that can adjust the position according to the height of the trainee and two rotating handles that can adjust the spacing according to the shoulder width of the trainee, thereby ensuring that the trainee can train with the correct posture and ensure the training effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional schematic diagram of an intelligent adjustable lifting device for pull-up training of the present invention;

[0011] Figure 2 It is a schematic diagram of the internal structure of an intelligent adjustable lifting device for pull-up training of the present invention;

[0012] Figure 3 The present invention Figure 2 Schematic diagram of the structure at AA in the middle;

[0013] Figure 4The present invention Figure 2 A partial enlarged schematic diagram;

[0014] Figure 5 The present invention Figure 2 A partial enlarged schematic diagram;

[0015] Figure 6 The present invention Figure 2 A partial enlarged schematic diagram;

[0016] Figure 7 The present invention Figure 2 A partial enlarged schematic diagram;

[0017] Figure 8 This is a three-dimensional schematic diagram of the counterweight block in the present invention:

[0018] In the figure:

[0019] 10. Base; 11. Buffer chamber; 12. Hydraulic chamber; 13. Support block; 14. Adjustment chamber; 15. Lifting block; 16. Connecting block; 17. Rotating wheel; 18. Rotating handrail; 19. Buffer block; 20. Hydraulic oil chamber; 21. Pressure limiting chamber; 22. Hydraulic spring; 23. Hydraulic plate; 24. Contact sensor; 25. Push plate; 26. Connecting rod; 27. Pedal; 28. Pressure limiting valve; 29. ​​Adjustment block; 30. Sliding chamber; 31. Sliding plate; 32. Adjustment threaded shaft; 33. Adjustment motor; 34. Counterweight block; 35. Counterweight Spring; 36, power shaft; 37, threaded sleeve; 38, sleeve cavity; 39, sliding block; 40, internal threaded sleeve; 41, wire rope; 42, reversing wheel; 43, push plate; 44, rack block; 45, threaded shaft cavity; 46, driving motor; 47, threaded slider; 48, rotating handle; 49, bidirectional threaded shaft; 50, connecting sleeve; 51, ladder plate; 52, lifting motor; 53, telescopic shaft; 54, load-bearing plate; 55, observation lens; 56, voice recognizer; 57, adjustment mechanism; 58, buffer mechanism; 59, training mechanism. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention;

[0021] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only simplified descriptions for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] See also Figure 1-Figure 8 The present invention provides a technical solution: an intelligent adjustable lifting device for pull-up training, comprising a base 10, wherein two symmetrical support blocks 13 are provided on the left and right sides of the base 10, a lifting block 15 is provided on the upper side of the support block 13, a ladder plate 51 is provided on the front side of the base 10, a buffer mechanism 58 is provided in the base 10, a training mechanism 59 is provided in the support block 13, an adjustment mechanism 57 is provided between the support block 13 and the lifting block 15, the buffer mechanism 58 can play a buffering role to prevent accidents, the training mechanism 59 can adjust the training difficulty, and the adjustment mechanism 57 can adapt to the training of different personnel.

[0023] Wherein, the buffer mechanism 58 includes a buffer cavity 11 provided in the base 10, the lower end wall of the buffer cavity 11 is fixedly connected with two buffer blocks 19 symmetrically on the left and right, the buffer block 19 is provided with a hydraulic oil cavity 20, the upper end wall of the hydraulic oil cavity 20 is provided with a pressure limiting cavity 21 connected with the hydraulic oil cavity 20, a hydraulic plate 23 is slidably connected in the hydraulic oil cavity 20, a hydraulic spring 22 is connected between the hydraulic plate 23 and the end wall of the hydraulic oil cavity 20, the upper end wall of the hydraulic oil cavity 20 is provided with two symmetrical contact sensors 24 that can sense the hydraulic plate 23, a liquid pushing plate 25 is slidably connected in the pressure limiting cavity 21, the liquid pushing plate 25 is fixedly connected with a connecting rod 26 with one end located in the buffer cavity 11, the connecting rod 26 is fixedly connected with a pedal 27 located in the buffer cavity 11, a pressure limiting valve 28 is provided in the pressure limiting cavity 21, and the buffer cavity Two hydraulic chambers 12 are symmetrically arranged in the left and right end walls of 11, and the hydraulic chamber 12 can be connected to the pressure limiting chamber 21 through the pressure limiting valve 28. A push plate 43 is slidably connected in the hydraulic chamber 12, and the push plate 43 is fixedly connected to a rack block 44 with one end located outside. The support block 13 is rotatably connected to two front and rear symmetrical rotating wheels 17 on the end face close to the symmetry center, and a rotating handrail 18 is connected between the two left and right symmetrical rotating wheels 17, and the rack block 44 is meshed with the rotating wheel 17. When a person falls onto the pedal 27, the pressure in the pressure limiting chamber 21 increases rapidly, so that the hydraulic oil in the pressure limiting chamber 21 is discharged into the hydraulic chamber 12 through the pressure limiting valve 28, so that the counterweight block 34 moves downward, thereby driving the rack block 44 to move downward, so that the rotating wheel 17 rotates, thereby rotating the rotating handrail 18, so that the trainee can hold the rotating handrail 18.

[0024] Among them, the training mechanism 59 includes an adjustment chamber 14 provided in the support block 13, a lifting motor 52 is provided in the lower end wall of the adjustment chamber 14, the lifting motor 52 is connected to a telescopic shaft 53 with one end located in the adjustment chamber 14, the telescopic shaft 53 is fixedly connected to a load-bearing plate 54, seven groups of counterweight blocks 34 are stacked on the load-bearing plate 54, and a connecting shaft sleeve 50 is provided in the counterweight block 34 that runs through the upper and lower parts, an adjustment block 29 is slidably connected to the adjustment chamber 14, a counterweight spring 35 is connected between the adjustment block 29 and the upper end wall of the adjustment chamber 14, a group of reversing wheels 42 are provided at the upper end of the support block 13, a steel wire rope 41 that turns through the reversing wheel 42 is connected between the adjustment block 29 and the pedal 27, a sliding chamber 30 is provided in the adjustment block 29, and the A sliding plate 31 is slidably connected in the sliding cavity 30, and an adjustment motor 33 is fixedly connected to the lower end surface of the sliding plate 31. The adjustment motor 33 is powered by an adjustment threaded shaft 32 with one end located in the adjustment cavity 14. An internal threaded sleeve 40 is provided in the lower end wall of the sliding cavity 30. The adjustment threaded shaft 32 is threadedly connected to the internal threaded sleeve 40. The adjustment threaded shaft 32 can be threadedly connected to the connecting sleeve 50. The lifting motor 52 is started to output power, thereby driving the telescopic shaft 53 to contract, thereby driving the load-bearing plate 54 to move downward, thereby driving the remaining counterweight block 34 on the counterweight block 34 to disengage from the counterweight block 34 threadedly connected to the adjusting threaded shaft 32. At this time, due to the gravity of the counterweight block 34, the pedal 27 is pulled upward through the wire rope 41, thereby offsetting a part of the weight of the trainee.

[0025] Among them, the adjustment mechanism 57 includes a threaded sleeve 37 with one end located in the internal threaded sleeve 40 and rotatably connected to the upper end surface of the support block 13, a lifting block 15 is provided on the upper side of the support block 13, the lifting block 15 is threadedly connected to the threaded sleeve 37, a connecting block 16 is connected between the two lifting blocks 15, a sleeve cavity 38 is provided in the threaded sleeve 37, the adjustment motor 33 is poweredly connected to a power shaft 36 with one end located in the sleeve cavity 38, a sliding block 39 fixedly connected to the power shaft 36 is slidably connected in the sleeve cavity 38, a threaded shaft cavity 45 is provided in the connecting block 16, two threaded sliders 47 symmetrically connected to the threaded shaft cavity 45 are slidably connected, a driving motor 46 is provided in the connecting block 16, the driving motor 46 is poweredly connected to a bidirectional threaded shaft 49 with one end located in the threaded shaft cavity 45, and the two threaded sliders 47 are threadedly connected to the bidirectional threaded shaft 49 The two threaded sliders 47 have opposite thread rotation directions, and the lower end surface of the threaded slider 47 is rotatably connected to a rotating handle 48. The front end surface of the connecting block 16 is fixedly connected to an observation lens 55, and the observation lens 55 can observe data such as the height and shoulder width of a person. The left support block 13 is installed with a voice recognizer 56, and the voice recognizer 56 can recognize the voice of a person. The voice recognizer 56 controls the start of the adjustment motor 33 by recognizing the voice of the training person, thereby driving the adjustment threaded shaft 32 to rotate. Since the adjustment threaded shaft 32 is threadedly connected to the internal threaded sleeve 40 provided in the lower end wall of the sliding cavity 30, the adjustment motor 33 is driven to move downward, thereby driving the sliding plate 31 to move downward, so that the adjustment threaded shaft 32 is threadedly connected to the connecting sleeve 50 provided in the counterweight block 34. When the adjustment motor 33 moves downward to a certain extent, the adjustment threaded shaft 32 is threadedly connected to the connecting sleeves 50 on several counterweight blocks 34.

[0026] The intelligent adjustment and lifting device for pull-up training of the present invention has the following working process:

[0027] In the initial state, hydraulic oil is provided in the hydraulic oil chamber 20, the push plate 43 is located at the lowest point, and the telescopic shaft 53 is in an extended state.

[0028] When training is needed, the personnel stand on the pedal 27, the observation lens 55 checks the personnel's shoulder width, height and other data, starts the driving motor 46 to output power, thereby driving the bidirectional threaded shaft 49 to rotate, thereby driving the threaded slider 47 to move toward or away from each other, so that the rotating handle 48 is the same as the shoulder width, thereby ensuring the correct training posture, starts the adjustment motor 33 to output power, thereby driving the power shaft 36 to rotate, thereby driving the threaded sleeve 37 to rotate, thereby driving the lifting block 15 to move up and down, thereby adjusting the height of the rotating handle 48 according to the height of the personnel, when the training difficulty needs to be adjusted;

[0029] When the difficulty of training needs to be adjusted, the voice recognition device 56 controls the start of the adjustment motor 33 by recognizing the voice of the trainee, thereby driving the adjustment threaded shaft 32 to rotate. Since the adjustment threaded shaft 32 is threadedly connected with the internal threaded sleeve 40 provided in the lower end wall of the sliding cavity 30, the adjustment motor 33 is driven to move downward, thereby driving the sliding plate 31 to move downward, so that the adjustment threaded shaft 32 is threadedly connected with the connecting sleeve 50 provided in the counterweight block 34. When the adjustment motor 33 moves downward to a certain extent, the adjustment threaded shaft 32 is threadedly connected with the connecting sleeves 50 on several counterweight blocks 34. At this time, the lifting motor 52 is started to output power, thereby driving the telescopic shaft 53 to retract, thereby driving The load-bearing plate 54 moves downward, thereby driving the remaining counterweight blocks 34 on the counterweight block 34 to be out of contact with the counterweight blocks 34 threadedly connected to the adjusting threaded shaft 32. At this time, the weight of the counterweight blocks 34 pulls the pedal 27 upward through the steel wire rope 41, thereby offsetting a part of the trainee's weight, so that the training can be completed more easily. When the trainee completes a pull-up, the pedal 27 moves to the uppermost position, so that the hydraulic oil in the hydraulic oil chamber 20 is completely discharged into the pressure-limiting chamber 21, so that the hydraulic plate 23 moves upward, thereby stretching the hydraulic spring 22, so that the contact sensor 24 senses the hydraulic plate 23, thereby completing a count, so that the trainee can accurately understand the number of training times;

[0030] When the trainee loses strength or suffers muscle strain, he / she cannot hold the rotating handle 48 and falls onto the pedal 27. Since there is hydraulic oil in the pressure limiting chamber 21, the hydraulic oil has a certain buffering effect to prevent the trainee from falling and getting injured. At the same time, when the trainee falls onto the pedal 27, the pressure in the pressure limiting chamber 21 increases rapidly, so that the hydraulic oil in the pressure limiting chamber 21 is discharged into the hydraulic chamber 12 through the pressure limiting valve 28, so that the counterweight block 34 moves downward, thereby driving the rack block 44 to move downward, so that the rotating wheel 17 rotates, thereby rotating the rotating armrest 18, so that the trainee can hold the rotating armrest 18 to prevent the trainee from falling and causing secondary injuries.

[0031] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent adjustable lifting device for pull-up training, comprising a base (10), characterized in that: Two symmetrical support blocks (13) are provided on the left and right sides of the base (10); a lifting block (15) is provided on the upper side of the support block (13); a ladder plate (51) is provided on the front side of the base (10); a buffer mechanism (58) is provided in the base (10); a training mechanism (59) is provided in the support block (13); an adjustment mechanism (57) is provided between the support block (13) and the lifting block (15); the buffer mechanism (58) can play a buffering role to prevent accidents; the training mechanism (59) can adjust the difficulty of training; and the adjustment mechanism (57) can adapt to the training of different personnel.

2. The intelligent adjustable lifting device for pull-up training according to claim 1, characterized in that: The buffer mechanism (58) comprises a buffer chamber (11) provided in the base (10), the lower end wall of the buffer chamber (11) being fixedly connected with two buffer blocks (19) which are symmetrical on the left and right, the buffer block (19) being provided with a hydraulic oil chamber (20), the upper end wall of the hydraulic oil chamber (20) being provided with a pressure limiting chamber (21) which is in communication with the hydraulic oil chamber (20), the hydraulic oil chamber (20) being slidably connected with a hydraulic plate (23), a hydraulic spring (22) being connected between the hydraulic plate (23) and the end wall of the hydraulic oil chamber (20), and the upper end wall of the hydraulic oil chamber (20) being provided with two contact sensors (24) which are symmetrical on the left and right and can sense the hydraulic plate (23).

3. The intelligent adjustable lifting device for pull-up training according to claim 2, characterized in that: A liquid pushing plate (25) is slidably connected in the pressure limiting chamber (21), and the liquid pushing plate (25) is fixedly connected to a connecting rod (26) with one end located in the buffer chamber (11), and the connecting rod (26) is fixedly connected to a pedal (27) located in the buffer chamber (11). A pressure limiting valve (28) is provided in the pressure limiting chamber (21), and two hydraulic chambers (12) are symmetrically provided in the left and right end walls of the buffer chamber (11), and the hydraulic chamber (12) can be connected to the pressure limiting chamber (21) through the pressure limiting valve (28). A push plate (43) is slidably connected in the hydraulic chamber (12), and the push plate (43) is fixedly connected to a rack block (44) with one end located outside. The end surface of one side of the support block (13) close to the symmetry center is rotatably connected to two front-to-rear symmetrical rotating wheels (17), and a rotating handrail (18) is connected between the two left-right symmetrical rotating wheels (17), and the rack block (44) is meshed with the rotating wheel (17).

4. The intelligent adjustable lifting device for pull-up training according to claim 3, characterized in that: The training mechanism (59) comprises an adjustment chamber (14) provided in the support block (13); a lifting motor (52) is provided in the lower end wall of the adjustment chamber (14); the lifting motor (52) is motively connected to a telescopic shaft (53) having one end located in the adjustment chamber (14); the telescopic shaft (53) is fixedly connected to a load-bearing plate (54); seven groups of counterweight blocks (34) are stacked on the load-bearing plate (54); a connecting shaft sleeve (50) is provided in the counterweight block (34) which passes through the top and bottom; an adjustment block (29) is slidably connected to the adjustment chamber (14); a counterweight spring (35) is connected between the adjustment block (29) and the upper end wall of the adjustment chamber (14); and a group of reversing wheels (42) are provided at the upper end of the support block (13).

5. The intelligent adjustable lifting device for pull-up training according to claim 4, characterized in that: A steel wire rope (41) is connected between the adjustment block (29) and the pedal (27) and is turned by a reversing wheel (42). A sliding cavity (30) is provided in the adjustment block (29). A sliding plate (31) is slidably connected in the sliding cavity (30). An adjustment motor (33) is fixedly connected to the lower end surface of the sliding plate (31). The adjustment motor (33) is motively connected to an adjustment threaded shaft (32) having one end located in the adjustment cavity (14). An internal threaded sleeve (40) is provided in the lower end wall of the sliding cavity (30). The adjustment threaded shaft (32) is threadedly connected to the internal threaded sleeve (40). The adjustment threaded shaft (32) can be threadedly connected to the connecting sleeve (50).

6. The intelligent adjustable lifting device for pull-up training according to claim 5, characterized in that: The adjustment mechanism (57) comprises a threaded sleeve (37) having one end located in the internal threaded sleeve (40) and rotatably connected to the upper end surface of the support block (13); the lifting block (15) is threadedly connected to the threaded sleeve (37); a connecting block (16) is connected between the two lifting blocks (15); a sleeve cavity (38) is provided in the threaded sleeve (37); the adjustment motor (33) is power-connected to a power shaft (36) having one end located in the sleeve cavity (38); a sliding block (39) fixedly connected to the power shaft (36) is slidably connected in the sleeve cavity (38); a threaded shaft cavity (45) is provided in the connecting block (16); two threaded sliders (47) symmetrically located in the threaded shaft cavity (45) are slidably connected.

7. The intelligent adjustable lifting device for pull-up training according to claim 6, characterized in that: A driving motor (46) is provided in the connecting block (16), and the driving motor (46) is motively connected to a bidirectional threaded shaft (49) having one end located in the threaded shaft cavity (45). The two threaded sliders (47) are threadedly connected to the bidirectional threaded shaft (49), and the threaded rotation directions of the two threaded sliders (47) are opposite. The lower end surface of the threaded slider (47) is rotatably connected to a rotating handle (48).

8. The intelligent adjustable lifting device for pull-up training according to claim 6, characterized in that: The front end surface of the connection block (16) is fixedly connected with an observation lens (55), and the observation lens (55) can observe data such as the height and shoulder width of a person.

9. The intelligent adjustable lifting device for pull-up training according to claim 1, characterized in that: The left support block (13) is equipped with a voice recognizer (56), and the voice recognizer (56) is capable of recognizing human voice.

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