Pulley frame

Abstract

The invention discloses a pulley frame which comprises a frame body, a first mounting frame and a second mounting frame, the first mounting frame and the second mounting frame are both arranged on the frame body, a first wheel shaft is arranged on the first mounting frame, a second wheel shaft is arranged on the second mounting frame, a first advancing wheel is arranged on the first wheel shaft, and a second advancing wheel is arranged on the second wheel shaft. A first traveling wheel is arranged on the first wheel shaft, a second traveling wheel is arranged on the second wheel shaft, the centrifugal speed limiter is arranged on the second wheel shaft, and the centrifugal speed limiter is matched with the second traveling wheel. Compared with the prior art, the pulley frame has the advantages that the centrifugal speed governor is arranged on the second wheel shaft, the rotating speed of the second advancing wheel is limited through the centrifugal speed governor, the rotating speed of the second advancing wheel is prevented from being too high, and the situation that the speed is too high when the whole frame body slides down from a high position is avoided.

Description

Technical Field

[0001] The invention relates to the field of amusement park amusement facilities, in particular to a pulley frame. Background Art

[0002] Slide amusement facilities are a commonly used equipment in amusement parks. Patent publication CN219023231U discloses a slide. A front wheel and a rear wheel are installed at the bottom of the slide with this structure, and a liftable brake pad is installed between the front wheel and the rear wheel. The rear wheel cooperates with a motor, and the motor serves as the power for the rear wheel. Similarly, when the slide falls from a height, the motor can also control the speed of the slide by controlling the speed of the rear wheel to prevent the slide from sliding too fast. However, there is also a problem with the slide with this structure. Once the motor fails or loses power supply, the slide needs to rely entirely on the brake pad for braking when it slides from a height. This will not only aggravate the wear of the brake pad, but also increase the probability of the slide overturning. Summary of the invention

[0003] In view of the above problems, the present invention proposes a pulley frame, which sets a centrifugal speed limiter on the second wheel axle to limit the rotation speed of the second traveling wheel, thereby preventing the second traveling wheel from rotating too fast and preventing the entire frame from sliding too fast when falling from a high place.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A pulley frame comprises a frame body, a first mounting frame and a second mounting frame, wherein the first mounting frame and the second mounting frame are both arranged on the frame body, the first mounting frame is arranged with a first wheel axle, the second mounting frame is arranged with a second wheel axle, the first wheel axle is arranged with a first traveling wheel, the second wheel axle is arranged with a second traveling wheel, and further comprises a centrifugal speed limiter, the centrifugal speed limiter is arranged on the second wheel axle, and the centrifugal speed limiter cooperates with the second traveling wheel;

[0006] The second wheel axle is provided with a protective cover, a Hall sensor is provided inside the protective cover, an induction magnetic sheet is provided on the second traveling wheel, and the centrifugal speed limiter is provided inside the protective cover.

[0007] In this pulley frame, a first mounting frame and a second mounting frame are installed on the frame body, wherein two first wheel axles are arranged on the first mounting frame, and a first traveling wheel is rotatably mounted on each first wheel axle, and two second wheel axles are arranged on the second mounting frame, and a second traveling wheel is rotatably mounted on each second wheel axle, the first traveling wheel is used as a front wheel, and the second traveling wheel is used as a rear wheel. Since a centrifugal speed limiter is arranged on the second wheel axle, the centrifugal speed limiter can limit the rotation speed of the second traveling wheel to a certain extent, so as to prevent the entire frame from sliding down from a high place at too fast a speed.

[0008] At the same time, in this pulley frame, the centrifugal speed limiter is arranged in the protective cover, and the protective cover plays a certain protective role on the centrifugal speed limiter.

[0009] At the same time, in this pulley frame, a ring-shaped Hall sensor is arranged on the protective cover, and an induction magnetic sheet is arranged at the edge of the second traveling wheel, and the induction magnetic sheet is located at the non-pressed position of the second traveling wheel. Therefore, with the help of the Hall sensor and the induction magnetic sheet, the rotation speed of the second traveling wheel can be sensed to a certain extent.

[0010] In this pulley frame, by arranging the annular Hall sensor and the induction magnetic sheet, the speed limiting effect of the centrifugal speed limiter can be monitored in real time.

[0011] Specifically, when the pulley frame of this type is in use, the first traveling wheel and the second traveling wheel on the frame body are in contact with the rails.

[0012] In summary, in this pulley frame, a centrifugal speed limiter is provided on the second wheel axle to limit the rotation speed of the second traveling wheel, thereby preventing the second traveling wheel from rotating too fast and preventing the entire frame from sliding too fast when it falls from a height.

[0013] Optionally, it also includes a brake rod, a linkage plate, a connecting plate and a clamping frame, wherein a brake pad is arranged in the clamping frame, one end of the connecting plate is rotatably engaged with the frame body, and the other end of the connecting plate is rotatably engaged with the clamping frame, the brake rod is rotatably arranged on the frame body, the linkage plate is fixedly engaged with the brake rod, the linkage plate is rotatably engaged with the clamping frame, a serrated groove is provided on the brake pad, and a through hole is provided on the brake pad.

[0014] In this type of pulley frame, the brake rod is installed in a rotating manner. When the brake rod is rotated, the clamping frame will rise and fall relative to the frame body. When the clamping frame descends, the brake pad will contact the rail (or other track) to achieve braking. When the clamping frame rises, the brake pad will be out of contact with the rail (or other track). In this type of brake pad, the surface of the brake pad is uneven by providing serrated grooves and through holes on the brake pad, which can improve the braking effect of the brake pad and prevent the brake pad from being adsorbed to the rail due to static electricity.

[0015] Optionally, a patch type pressure sensor is also included, and the patch type pressure sensor is arranged between the brake pad and the clamping frame.

[0016] The specific function of the patch pressure sensor is to detect the squeezing force between the brake pad and the clamping frame. When the brake pad is used for braking, the pressure sensed by the patch pressure sensor will increase. Therefore, the patch pressure sensor can be set to monitor the braking process and sense the braking intensity.

[0017] Optionally, an auxiliary frame is further included, and the auxiliary frame is provided on both the first mounting frame and the second mounting frame, a clamping wheel is rotatably mounted on the auxiliary frame, a side connecting plate is provided on the auxiliary frame, and an ultrasonic ranging probe is provided on the side connecting plate.

[0018] The function of the clamping wheel on the specific auxiliary frame is to clamp the guide rail. The clamping wheel clamping the guide rail can guide the movement of the guide rail. The side connecting plate is always located below the guide rail. The ultrasonic ranging probe on the side connecting plate is used to measure the distance between the side connecting plate and the guide rail. By measuring the distance between the two, it is possible to monitor whether jitter occurs during the sliding process of the pulley frame.

[0019] It should be noted that the guide rail is not the same rail as the steel rail. The steel rail is used to contact the first traveling wheel and the second traveling wheel, and the steel rail is mainly used for load bearing. The guide rail is mainly used for guiding the guide clip.

[0020] Optionally, it also includes a protective rubber block, which is arranged on the side connecting plate. The protective rubber block is provided with a mounting countersunk hole, and the ultrasonic ranging probe is arranged in the mounting countersunk hole.

[0021] Specifically, a protective rubber block (including but not limited to a rubber block) is arranged on the side connecting plate, and the ultrasonic ranging probe is arranged in the countersunk hole of the protective rubber block. The soft rubber block can be used to protect the ultrasonic ranging probe.

[0022] It should be noted that the ultrasonic ranging probe is only located in the mounting countersunk hole. When the protective rubber block contacts the guide rail, the ultrasonic ranging probe will not contact the guide rail.

[0023] Specifically, as an optimal braking measure, the position of the clamping frame can be adjusted so that the brake pads on the clamping frame also brake by contacting the guide rail, and when the frame slides on the rail, the brake pads and the protective rubber blocks are respectively located at the upper and lower ends of the guide rail. During normal braking, the brake pads contact the upper end surface of the guide rail for braking. When the frame shows a tendency to overturn during sliding, the protective rubber block located at the lower end of the guide rail contacts the lower end of the guide rail for braking.

[0024] When this type of frame is in use, when the strength of the guide rail is sufficient to support the frame and the weight carried by the frame, the guide rail can also be used as a dedicated brake rail. The specific method of using it as a dedicated brake rail is as follows: when braking is required, the brake lever is rotated, and the rotation of the brake lever drives the clamping frame to move toward the guide rail. The brake pad on the clamping frame contacts the upper end of the guide rail for braking. At this time, the brake pad forms an extrusion force on the guide rail during braking. In this way, when the brake lever is continuously rotated, the guide rail will form a lifting tendency on the frame, and the frame will be lifted relative to the guide rail and the rail, so that the first and second traveling wheels are out of contact with the rail. At this time, the protective rubber block on the side plate also contacts the lower end of the guide rail for braking. The brake pad and the protective rubber block clamp the guide rail from the upper and lower ends respectively. This not only can achieve a better braking effect, but also a short braking distance, and prevent the occurrence of overturning during braking and sliding, and the safety factor is higher. In this specific frame, the brake pad is located between the two protective rubber blocks.

[0025] Optionally, it also includes a rotating plate and a tension spring, wherein the rotating plate has two pieces, and the two rotating plates are rotatably installed on the frame body, and the two rotating plates are provided with tooth surfaces, and the tooth surfaces on the two rotating plates are meshed together, and each rotating plate is provided with a clamping cable, one end of the tension spring is matched with the frame body, and the other end of the tension spring is matched with the rotating plate, and the clamping cables on the two rotating plates are tightly matched together.

[0026] Specifically, there are two tension springs, and the two tension springs respectively hook a rotating piece. The tension springs have a tendency to drive the rotating piece to rotate, so that the clamping cables on the two driving pieces are closely attached to each other.

[0027] Optionally, a backrest rod bracket is provided on the frame.

[0028] Optionally, a handrail rack is provided on the frame.

[0029] Optionally, the armrest rod frame and the backrest rod frame are located on the same side of the frame body.

[0030] Optionally, the first traveling wheel and the second traveling wheel are respectively located on the same side of the frame, and the first traveling wheel and the handrail rack are respectively located on both sides of the frame.

[0031] The beneficial effect of the present invention is that a centrifugal speed limiter is arranged on the second wheel shaft, and the rotation speed of the second traveling wheel is limited by the centrifugal speed limiter, so as to avoid the second traveling wheel from rotating too fast and avoid the entire frame from sliding down from a high place at too fast a speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0033] Figure 1 It is a schematic diagram of the pulley frame structure;

[0034] Figure 2 yes Figure 1 The enlarged schematic diagram of A in the middle;

[0035] Figure 3 is a schematic diagram of the positional relationship between the first mounting bracket and the second mounting bracket on the bracket body;

[0036] Figure 4 yes Figure 3 An enlarged schematic diagram of point B in the middle.

[0037] The reference numerals in the figure are: 1. backrest rod frame; 2. brake rod; 3. handrail rod frame; 4. frame body; 5. first mounting frame; 6. first wheel axle; 7. first traveling wheel; 8. clamping wheel; 9. auxiliary frame; 10. side connecting plate; 11. protective rubber block; 12. second wheel axle; 13. second traveling wheel; 14. centrifugal speed limiter; 15. Hall sensor; 16. protective cover; 17. connecting plate; 18. linkage plate; 19. clamping frame; 20. brake pad; 2001. sawtooth groove; 2002. through hole; 21. second mounting frame; 22. clamping cable; 23. rotating plate; 24. tension spring; 25. tooth surface. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0041] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 And attached Figure 4 As shown, a pulley frame includes a frame body 4, a first mounting frame 5 and a second mounting frame 21, the first mounting frame 5 and the second mounting frame 21 are both arranged on the frame body 4, the first mounting frame 5 is provided with a first wheel axle 6, the second mounting frame 21 is provided with a second wheel axle 12, the first wheel axle 6 is provided with a first traveling wheel 7, the second wheel axle 12 is provided with a second traveling wheel 13, and also includes a centrifugal speed limiter 14, the centrifugal speed limiter 14 is provided on the second wheel axle 12, and the centrifugal speed limiter 14 is matched with the second traveling wheel 13;

[0042] A protective cover 16 is provided on the second wheel shaft 12 , a Hall sensor 15 is provided inside the protective cover 16 , an induction magnetic sheet is provided on the second traveling wheel 13 , and a centrifugal speed limiter 14 is provided inside the protective cover 16 .

[0043] In this pulley frame, a first mounting frame 5 and a second mounting frame 21 are installed on the frame body 4, wherein two first wheel axles 6 are arranged on the first mounting frame 5, and a first traveling wheel 7 is rotatably mounted on each first wheel axle 6, and two second wheel axles 12 are arranged on the second mounting frame 21, and a second traveling wheel 13 is rotatably mounted on each second wheel axle 12, the first traveling wheel 7 is used as a front wheel, and the second traveling wheel 13 is used as a rear wheel. Since a centrifugal speed limiter 14 is arranged on the second wheel axle 12, the centrifugal speed limiter 14 can limit the rotation speed of the second traveling wheel 13 to a certain extent, so as to prevent the entire frame body 4 from sliding down from a high place at too fast a speed.

[0044] Meanwhile, in this pulley frame, the centrifugal speed limiter 14 is arranged in the protective cover 16 , and the protective cover 16 plays a certain protective role on the centrifugal speed limiter 14 .

[0045] At the same time, in this pulley frame, a ring-shaped Hall sensor 15 is arranged on the protective cover 16, and an induction magnetic sheet is arranged at the edge of the second traveling wheel 13, and the induction magnetic sheet is located at the non-compressed part of the second traveling wheel 13, so with the help of the Hall sensor 15 and the induction magnetic sheet, the rotation speed of the second traveling wheel can be sensed to a certain extent.

[0046] In this type of pulley frame, by providing an annular Hall sensor 15 and an inductive magnetic sheet, the speed limiting effect of the centrifugal speed limiter 14 can be monitored in real time.

[0047] Specifically, when this type of pulley frame is in use, the first traveling wheel and the second traveling wheel 13 on the frame body 4 are in contact with the rails.

[0048] In summary, in this type of pulley frame, a centrifugal speed limiter 14 is provided on the second wheel axle 12, and the rotational speed of the second traveling wheel 13 is limited by the centrifugal speed limiter 14, so as to prevent the second traveling wheel 13 from rotating too fast and prevent the entire frame 4 from sliding down from a high place at too fast a speed.

[0049] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 And attached Figure 4 As shown, it also includes a brake rod 2, a linkage plate 18, a connecting plate 17 and a clamping frame 19. A brake pad 20 is arranged in the clamping frame 19. One end of the connecting plate 17 is rotatably matched with the frame body 4, and the other end of the connecting plate 17 is rotatably matched with the clamping frame 19. The brake rod 2 is rotatably arranged on the frame body 4, the linkage plate 18 is fixedly matched with the brake rod 2, the linkage plate 18 is rotatably matched with the clamping frame 19, a serrated groove 2001 is provided on the brake pad 20, and a through hole 2002 is provided on the brake pad 20.

[0050] In this type of pulley frame, the brake rod 2 is installed in a rotating manner. When the brake rod 2 is rotated, the clamping frame 19 will rise and fall relative to the frame body 4. When the clamping frame 19 descends, the brake pad 20 will contact the rail (or other track) to achieve braking. When the clamping frame 19 rises, the brake pad 20 will be out of contact with the rail (or other track). In this type of brake pad 20, the surface of the brake pad 20 is uneven by providing a sawtooth groove 2001 and a through hole 2002 on the brake pad 20, which can improve the braking effect of the brake pad 20 and prevent the brake pad 20 from being adsorbed by the rail due to static electricity.

[0051] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 And attached Figure 4 As shown, a patch pressure sensor is also included, and the patch pressure sensor is arranged between the brake pad 20 and the clamping frame 19.

[0052] The specific function of the patch pressure sensor is to detect the squeezing force between the brake pad 20 and the clamping frame 19. When the brake pad 20 is used for braking, the pressure sensed by the patch pressure sensor will increase. Therefore, the patch pressure sensor can be set to monitor the braking process and sense the braking intensity.

[0053] Optionally, an auxiliary frame 9 is further included. The first mounting frame 5 and the second mounting frame 21 are both provided with the auxiliary frame 9. A clamping wheel 8 is rotatably mounted on the auxiliary frame 9. A side connecting plate 10 is provided on the auxiliary frame 9. An ultrasonic ranging probe is provided on the side connecting plate 10.

[0054] The function of the clamping wheel 8 on the specific auxiliary frame 9 is to clamp the guide rail. The clamping wheel 8 clamping the guide rail can guide the movement of the guide rail. The side connecting plate 10 is always located below the guide rail. The ultrasonic ranging probe on the side connecting plate 10 is used to measure the distance between the side connecting plate 10 and the guide rail. By measuring the distance between the two, it is possible to monitor whether jitter occurs during the sliding process of the pulley frame.

[0055] It should be noted that the guide rail is not the same rail as the steel rail, the steel rail is used to contact the first traveling wheel 7 and the second traveling wheel 13, and the steel rail is mainly used for load bearing, while the guide rail is mainly used for guiding the guide clip.

[0056] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 And attached Figure 4 As shown, it also includes a protective rubber block 11, which is arranged on the side connecting plate 10. The protective rubber block 11 is provided with a mounting countersunk hole, and the ultrasonic ranging probe is arranged in the mounting countersunk hole.

[0057] Specifically, a protective rubber block 11 (including but not limited to a rubber block) is provided on the side connecting plate 10 , and the ultrasonic distance measuring probe is provided in a countersunk hole of the protective rubber block 11 , and the soft rubber block can be used to protect the ultrasonic distance measuring probe.

[0058] It should be noted that the ultrasonic ranging probe is only located in the mounting countersunk hole, and when the protective rubber block 11 contacts the guide rail, the ultrasonic ranging probe will not contact the guide rail.

[0059] Specifically, as an optimal braking measure, the position of the clamping frame 19 can be adjusted so that the brake pad 20 on the clamping frame 19 also brakes by contacting the guide rail, and when the frame 4 slides on the rail, the brake pad 20 and the protective rubber block 11 are respectively located at the upper and lower ends of the guide rail. During normal braking, the brake pad 20 contacts the upper end surface of the guide rail for braking. When the frame 4 shows a tendency to overturn during sliding, the protective rubber block 11 located at the lower end of the guide rail contacts the lower end of the guide rail for braking.

[0060] When the frame is in use, when the strength of the guide rail is sufficient to support the frame 4 and the weight borne on the frame 4, the guide rail can also be used as a special brake rail. The specific method of using it as a special brake rail is as follows. When braking is needed, the brake rod 2 is rotated, and the brake rod 2 rotates to drive the clamping frame 19 to move toward the guide rail. The brake pad 20 on the clamping frame 19 contacts the upper end of the guide rail for braking. At this time, the brake pad 20 forms an extrusion force on the guide rail during braking. In this way, when the brake rod 2 is continuously rotated, the guide rail will form a lifting trend on the frame 4, and the frame 4 will be lifted relative to the guide rail and the rail, so that the first traveling wheel 7 and the second traveling wheel 13 are out of contact with the rail. At this time, the protective rubber block 11 on the side connecting plate 10 also contacts the lower end of the guide rail for braking. The brake pad 20 and the protective rubber block 11 respectively clamp the guide rail from the upper and lower ends. This not only can obtain a better braking effect, but also a short braking distance, and prevent the occurrence of overturning during braking and sliding, and the safety factor is higher. Specifically in this frame 4 , the brake pad 20 is located between two protective rubber blocks 11 .

[0061] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 And attached Figure 4 As shown, it also includes a rotating piece 23 and a tension spring 24. The rotating piece 23 has two pieces. The two rotating pieces 23 are rotatably installed on the frame 4. The two rotating pieces 23 are provided with tooth surfaces 25. The tooth surfaces 25 on the two rotating pieces 23 are meshed together. Each rotating piece 23 is provided with a clamping cable 22. One end of the tension spring 24 is matched with the frame 4, and the other end of the tension spring 24 is matched with the rotating piece 23. The clamping cables 22 on the two rotating pieces 23 are tightly matched together.

[0062] Specifically, there are two tension springs 24 , and the two tension springs 24 hook a rotating piece 23 respectively. The tension springs 24 have a tendency to drive the rotating piece 23 to rotate, so that the clamping cables 22 on the two driving pieces are closely attached to each other.

[0063] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 And attached Figure 4 As shown, a backrest rod frame 1 is arranged on the frame body 4.

[0064] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 And attached Figure 4 As shown, a handrail frame 3 is arranged on the frame body 4.

[0065] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 And attached Figure 4 As shown, the armrest rod frame 3 and the backrest rod frame 1 are located on the same side of the frame body 4.

[0066] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 And attached Figure 4 As shown, the first traveling wheel 7 and the second traveling wheel 13 are respectively located on the same side of the frame 4 , and the first traveling wheel 7 and the handrail frame 3 are respectively located on both sides of the frame 4 .

[0067] The above-described embodiments only express some embodiments of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for those skilled in the art, it is still possible to modify the technical solutions recorded in the above-mentioned embodiments, or to replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pulley frame, comprising a frame body, a first mounting frame and a second mounting frame, wherein the first mounting frame and the second mounting frame are both arranged on the frame body, the first mounting frame is provided with a first axle, the second mounting frame is provided with a second axle, the first axle is provided with a first traveling wheel, and the second axle is provided with a second traveling wheel, characterized in that: It also includes a centrifugal speed limiter, which is arranged on the second wheel shaft and cooperates with the second traveling wheel; The second wheel axle is provided with a protective cover, a Hall sensor is provided inside the protective cover, an induction magnetic sheet is provided on the second traveling wheel, and the centrifugal speed limiter is provided inside the protective cover.

2. A pulley frame according to claim 1, characterized in that: It also includes a brake rod, a linkage plate, a connecting plate and a clamping frame, wherein a brake pad is arranged in the clamping frame, one end of the connecting plate is rotatably matched with the frame body, and the other end of the connecting plate is rotatably matched with the clamping frame, the brake rod is rotatably arranged on the frame body, the linkage plate is fixedly matched with the brake rod, the linkage plate is rotatably matched with the clamping frame, a serrated groove is provided on the brake pad, and a through hole is provided on the brake pad.

3. A pulley frame according to claim 2, characterized in that: It also includes a patch type pressure sensor, which is arranged between the brake pad and the clamping frame.

4. A pulley frame according to claim 1, characterized in that: It also includes an auxiliary frame, which is arranged on both the first mounting frame and the second mounting frame, on which a clamping wheel is rotatably mounted, and on which a side connecting plate is arranged, on which an ultrasonic ranging probe is arranged.

5. A pulley frame according to claim 4, characterized in that: It also includes a protective rubber block, which is arranged on the side connecting plate. The protective rubber block is provided with a mounting countersunk hole, and the ultrasonic ranging probe is arranged in the mounting countersunk hole.

6. A pulley frame according to claim 1, characterized in that: It also includes a rotating plate and a tension spring, the rotating plate has two plates, both of which are rotatably installed on the frame, both of which are provided with tooth surfaces, the tooth surfaces on the two rotating plates are meshed together, each rotating plate is provided with a clamping cable, one end of the tension spring is matched with the frame, and the other end of the tension spring is matched with the rotating plate, and the clamping cables on the two rotating plates are tightly matched together.

7. A pulley frame according to claim 1, characterized in that: A backrest rod frame is arranged on the frame body.

8. A pulley frame according to claim 7, characterized in that: A handrail rack is arranged on the frame body.

9. A pulley frame according to claim 8, characterized in that: The handrail rod frame and the backrest rod frame are located on the same side of the frame body.

10. A pulley frame according to claim 8, characterized in that: The first traveling wheel and the second traveling wheel are respectively located on the same side of the frame, and the first traveling wheel and the handrail frame are respectively located on both sides of the frame.

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