Single-cable electric rescue device

Abstract

The utility model relates to the technical field of recreation facilities, in particular to a single-cable electric rescue device which comprises a frame, a pulley block and two locking mechanisms which are symmetrically arranged and used for preventing the frame from being separated from a slip cable, the frame comprises a rear side plate, the pulley block comprises a power pulley and a power source, and the pulley block is defined to move left and right on the slip cable. The locking mechanism comprises a switch assembly and a limiting assembly, the switch assembly comprises a lock arm fixing shaft, a lock arm, a lock wheel, an elastic piece and a handle, the lock arm comprises a handle end and a ratchet end, and the ratchet end is provided with a ratchet used for being matched with the limiting assembly so as to keep the rotating position of the lock arm; the limiting assembly comprises a pawl fixing shaft, two pawls and a reset piece. The locking wheel has a clamping state of being matched with the pulley block to clamp the slip rope under the driving of the elastic piece and a releasing state of being far away from the pulley block under the blocking of the pawl; the rescue device is convenient to use, the situation that the rescue device cannot be used due to the fact that the safety plug pin is lost is avoided, and the use reliability of the rescue device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of recreation facilities, in particular to a single cable electric rescue device. BACKGROUND

[0002] The slide is a common recreation project and extreme sport in scenic spots, which utilizes gravity to make passengers wear special flexible hangers and hang under the sliding trolley to slide rapidly from high to low along the inclined steel rope as the track.

[0003] During normal operation of the slide, the sliding trolley will not be stranded on the steel wire rope, but in some special situations, such as the sliding trolley pulley being blocked during sliding, strong wind or light passenger weight, the sliding trolley may not be able to run to the next station, causing the passengers to be stranded in the middle of the slide. At this time, the staff needs to rescue the passengers.

[0004] The existing slide rescue device has power drive and non-power drive for different slide distances. The non-power drive slide rescue device relies on manual swinging to hook the slide and pull the rope for rescue, but this situation is suitable for short distance rescue. For long distance rescue, a power driven rescue device is needed.

[0005] For example, the Chinese patent document with the authorization announcement number CN221846045U discloses a passenger slide electric rescue device, which includes a shell, a slide inside the shell, an electric drive mechanism inside the shell, a cable groove on one side of the shell, a capture arm extending from both sides of the front end of the shell, a capture mechanism on one side of the capture arm, a hook symmetrically arranged on the outer bottom wall of the shell, and an adjustable seat rod fixedly installed between the hooks. The lower end of the adjustable seat rod is provided with an adjustable seat disc. A anti-disengagement cable safety bar is also screwed on the outer wall of the shell to prevent the slide from disengaging from the pulley.

[0006] In the actual application process of the above-mentioned device, when the passenger needs rescue in an emergency, the anti-disengagement cable safety bar needs to be removed from the shell first, the rescue device is installed on the slide through the cable groove on the shell, and then the anti-disengagement cable safety bar is installed on the shell of the rescue device. The anti-disengagement cable safety bar is used to close the cable groove to prevent the rescue device from disengaging from the slide. In order to ensure the firmness of the installation of the anti-disengagement cable safety bar, a power wrench or other fastening tool may be used, and the installation procedure is relatively complicated. At the same time, since the anti-disengagement cable safety bar and the shell are a split structure, the anti-disengagement cable safety bar may be lost or not installed back on the rescue device after use, which causes the rescue device to be unable to use, and further affects the safety of the passengers. UTILITY MODEL CONTENTS

[0007] The utility model provides a slide deceleration device to solve the technical problem of inconvenient use caused by the complicated installation process of the existing slide rescue device.

[0008] To solve the above problems, the single-rope electric rescue device provided by the utility model adopts the following technical scheme:

[0009] A single-rope electric rescue device, comprising a frame provided with a sliding rope opening, a pulley block and two locking mechanisms for opening and closing the sliding rope opening, characterized in that the locking mechanism comprises a switch assembly and a limiting assembly, the limiting assembly comprises a pawl rotatably installed on the frame and a reset member; the switch assembly comprises a lock arm rotatably installed on the frame, an elastic member and a lock wheel, a handle and a ratchet tooth provided on the lock arm; the lock arm is rotatable around a front-rear shaft and has a clockwise-arranged locking position for closing the sliding rope opening, a release position for opening the sliding rope opening and a disengagement position, the handle is used for controlling the lock arm to move from the locking position to the release position and from the release position to the disengagement position, the elastic member is used for counterclockwise driving of the lock arm to the locking position, and the lock wheel is used for clamping the sliding rope or disengaging the sliding rope in cooperation with the pulley block when the lock arm is in the locking position / release position; the pawl is rotatable around the front-rear shaft and has an anticlockwise-arranged left / middle / right position, and the reset member is used for driving the pawl to the middle position; the pawl and the ratchet tooth have corresponding shapes to make the pawl in the left position have a meshing state of forming a ratchet mechanism by engaging the ratchet tooth, the pawl in the right position has a free state of being freely pushed away by the ratchet tooth, the pawl is in the meshing state when the handle controls the lock arm to move from the locking position to the release position to prevent the lock arm from reversing, the pawl is disengaged from the ratchet tooth when the handle controls the lock arm to move from the release position to the disengagement position and returns to the middle position under the action of the reset member, and the pawl is in the free state when the lock arm moves from the disengagement position to the locking position under the action of the elastic member to avoid interfering with the lock arm.

[0010] The single-rope electric rescue device has the advantages that the lock wheel installed on the lock arm can be driven by the elastic member to clamp the sliding rope in cooperation with the pulley block, thereby closing the sliding rope opening and preventing the rescue device from disengaging from the sliding rope; in addition, the pawl and the ratchet tooth are matched to make the lock arm having an anticlockwise rotating trend under the action of the elastic member be stopped by the pawl in the left position after the operator pulls down the handle, thereby keeping the sliding rope opening in an open state and achieving the effect of conveniently opening the sliding rope opening; compared with the safety bolt, the rescue device is more convenient to use, and the situation that the rescue device cannot be used due to the loss of the safety bolt is avoided, thereby improving the use reliability of the single-rope electric rescue device.

[0011] Further, the number of the lock arms in each switch assembly is two, the lock arm is an L-shaped plate with an opening facing downward, the lock arm comprises a handle end and a ratchet tooth end, the handle is installed on the handle end, the lock wheel is rotatably installed at the bending part of the lock arm, and the ratchet tooth is located at the ratchet tooth end; the switch assembly further comprises a lock arm fixing shaft fixed on the frame and extending forward and backward, and the lock arm is rotatably installed on the lock arm fixing shaft through the ratchet tooth end.

[0012] Further, the elastic member is a torsion spring sleeved on the lock arm fixing shaft, and the torsion spring is used to drive the lock arm to rotate upward.

[0013] Further, the limiting assembly further comprises a ratchet fixing shaft fixed on the frame and extending forward and backward, and the number of the ratchets in each limiting assembly is two. The ratchet comprises a base, a limiting tooth fixed on the upper end of the base and used to cooperate with the ratchet tooth, and a connecting block located at the lower end of the base and used to connect the reset member. The base is rotatably installed on the ratchet fixing shaft, and the limiting tooth is used to block the counterclockwise rotation of the ratchet tooth when the ratchet is in the left position.

[0014] The reset member is a tension spring extending in the up-down direction. The upper end of the tension spring is fixedly connected with the connecting block, and the lower end of the tension spring is fixed on the frame, so as to drive the ratchet to return to the middle position.

[0015] Further, the limiting assembly further comprises a fixing member sleeved on the ratchet fixing shaft and located between the two ratchets, and the fixing member is used to keep the relative position between the two ratchets.

[0016] Further, the pulley set comprises two power pulleys rotatably cooperating with the sliding rope and a power source used to provide driving force to the power pulleys.

[0017] Further, the frame comprises a rear side plate, an upper frame, and a lower frame located below the upper frame. The upper frame and the lower frame are both fixed on the rear side plate, and the upper frame and the lower frame have a gap for the sliding rope to pass through, so as to facilitate the installation of the electric rescue device on the sliding rope.

[0018] The power pulleys are installed on the upper end of the rear side plate, and the upper frame comprises an upper cover plate located at the upper end of the power pulleys, two side plates located at the left and right ends of the power pulleys, and an upper front side plate located in front of the power pulleys, so as to protect the power pulleys.

[0019] Further, the lower frame comprises a bottom plate fixed on the rear side plate, a top plate fixed on the rear side plate and located above the bottom plate, and a lower front side plate fixed on the front side of the bottom plate. The bottom plate is a U-shaped plate extending forward and backward.

[0020] The two locking mechanisms are respectively located at the left and right ends of the bottom plate, and the ratchet tooth ends of the limiting assembly and the lock arm are both installed on the inner side of the bottom plate. The bottom plate and the top plate correspond to the positions of the lock arm and have avoiding grooves for the ratchet tooth ends of the lock arm to pass through.

[0021] Further, the left end of the rear side plate has a hook used to lock the pulley, and the lower end of the rear side plate and the front end of the lower front side plate both have a hanging plate.

[0022] Further, the rear side of the rear side plate is provided with an electric control module, and the electric control module is electrically connected with the power pulleys, so as to realize the remote control of the single-rope electric rescue device.

[0023] The single-cable electric rescue device has the following beneficial effects:

[0024] 1. The single-cable electric rescue device has the following beneficial effects:In addition, the cooperating pawl and ratchet are arranged, so that after the operator pulls down the handle, the pawl in the left position can stop the lock arm having a counterclockwise rotation trend under the driving of the elastic member, thereby keeping the opening state of the slide rope opening, and the effect of conveniently opening the slide rope opening is achieved.

[0025] 2. The arrangement of the electric control module realizes remote control of the electric rescue device, increases the rescue distance, and improves the use convenience of the electric rescue device. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The front view of the single-cable electric rescue device provided by the utility model is shown in FIG. 1;

[0027] Figure 2 The rear view of the single-cable electric rescue device provided by the utility model is shown in FIG. 2;

[0028] Figure 3 The internal structure schematic view of the single-cable electric rescue device provided by the utility model is shown in FIG. 3;

[0029] Figure 4 The structure schematic view of the locking mechanism in the middle position is shown in FIG. 4; Figure 3

[0030] The structure schematic view of the lock arm in the middle position is shown in FIG. 5; Figure 5 Figure 4 The structure schematic view of the pawl in the middle position is shown in FIG. 6;

[0031] Figure 6 Figure 4 The state schematic view of the locking mechanism when the pawl is in the left position is shown in FIG. 7;

[0032] Figure 7 The state schematic view of the locking mechanism when the pawl is in the right position is shown in FIG. 8.

[0033] Figure 8 The state schematic view of the locking mechanism when the pawl is in the right position is shown in FIG. 8.

[0034] Figure 9 The state schematic view of the locking mechanism when the pawl is in the right position is shown in FIG. 8.

[0035] Marked in the drawings:​

[0036] 1. Frame; 11. Rear side panel; 111. Hook; 112. Electrical control module; 12. Upper frame; 121. Upper cover plate; 122. Side panel; 123. Upper front side panel; 124. Handle; 13. Lower frame; 131. Bottom plate; 132. Top plate; 133. Lower front side panel; 134. Clearance groove; 135. Hanging plate;

[0037] 2. Pulley block; 21. Power pulley; 22. Power source;

[0038] 3. Locking mechanism; 31. Switch assembly; 311. Locking arm; 311a. Racket end; 311b. Handle end; 311c. Flange; 311d. Racket; 312. Torsion spring; 313. Locking arm fixing shaft; 314. Locking wheel; 315. Handle; 32. Limiting assembly; 321. Pawl; 321a. Base; 321b. Limiting tooth; 321c. Connecting block; 322. Tension spring; 323. Pawl fixing shaft; 324. Spring; 4. Sliding cable; 5. Sliding cable opening. Detailed Implementation

[0039] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0040] Example 1 of a single-rope electric rescue device provided by this utility model:

[0041] like Figures 1 to 8 As shown, the single-rope electric rescue device includes a frame 1, a pulley block 2, and two locking mechanisms 3 for preventing the frame 1 from detaching from the rope 4. The rescue device is defined to move left and right on the rope 4. The frame 1 supports the pulley block 2 and the locking mechanisms 3, both of which are fixed to the frame 1. The pulley block 2 drives the frame 1 to move along the rope 4.

[0042] The following section will first introduce Framework 1, such as... Figures 1 to 3 As shown, frame 1 includes a rear side plate 11, an upper frame 12, and a lower frame 13. The rear side plate 11 is a trapezoidal plate extending in the left-right and up-down directions. The upper frame 12 is fixed to the upper end of the front side of the rear side plate 11 and includes a front-to-back horizontally extending upper cover plate 121, two vertically extending side plates 122 located on the left and right sides of the upper cover plate 121, and an upper front side plate 123 located in front of the upper cover plate 121 and the side plates 122. The upper cover plate 121 and the two side plates 122 are all fixed to the rear side plate 11. The upper front side plate 123 is fixedly connected to the upper cover plate 121 and the two side plates 122 respectively. The rear side plate 11, the upper cover plate 121, the two side plates 122, and the upper front side plate 123 together form a downward-opening upper cavity.

[0043] The lower frame 13 is fixed at the lower end of the front side of the rear side plate 11 and is located below the upper frame 12, and a sliding rope port 5 for the sliding rope 4 to pass through is provided between the upper frame 12 and the lower frame 13, so that the electric rescue device can be installed on the sliding rope 4 through the sliding rope port 5. The lower frame 13 comprises a bottom plate 131, a top plate 132 and a lower front side plate 133, the bottom plate 131 is a U-shaped plate extending in the front-rear direction, the top plate 132 is located above the bottom plate 131 and extends in the front-rear direction, the bottom plate 131 and the top plate 132 are fixed on the rear side plate 11, and the lower front side plate 133 is fixed on the front side of the bottom plate 131 and the top plate 132 and extends in the up-down direction, and the rear side plate 11, the bottom plate 131, the top plate 132 and the lower front side plate 133 jointly form a closed lower cavity.

[0044] The left end of the rear side plate 11 has a hook 111 extending to the left, and the hook 111 is fixed on the rear side plate 11 and is used to hook the pulley block during rescue, the upper end of the upper cover plate 121 has a handle 124 for the operator to hold, and the lower end of the rear side of the rear side plate 11 and the front side of the lower front side plate 133 both have a hanging plate 135 for connecting a hanging basket to carry objects or personnel.

[0045] The pulley block 2 will be introduced below, as shown in Figure 3 The pulley block 2 comprises a power pulley 21 and a power source 22, the power pulley 21 is rotatably installed on the front side of the rear side plate 11 and located in the upper cavity, the number of power pulleys 21 is two, and the two power pulleys 21 are arranged horizontally left and right, the lower end of the power pulley 21 is in rotational contact with the sliding rope 4 to support the single-rope electric rescue device to move left and right along the sliding rope 4. The power source 22 is a battery installed in the lower cavity, and the battery and the power pulley 21 are electrically connected. The rear side of the rear side plate 11 is also provided with an electronic control module 112, and the electronic control module 112 and the power pulley 21 are signal connected to realize remote control of the single-rope electric rescue device through the electronic control module 112.

[0046] The locking mechanism 3 will be introduced below, as shown in Figures 3 to 6 The two locking mechanisms 3 are respectively located at the left and right ends of the lower frame 13 and are symmetrically arranged, the locking mechanism 3 comprises a switch assembly 31 and a limiting assembly 32, the switch assembly 31 is used to close the gap between the lower frame 13 and the sliding rope 4 to prevent the rescue device from being separated from the sliding rope 4, and the limiting assembly 32 is used to keep the opening state of the switch assembly 31 when the switch assembly 31 is opened.

[0047] The switch assembly 31 comprises two lock arms 311 arranged in parallel front to back, a lock arm fixing shaft 313, an elastic member, a lock wheel 314 and a handle 315. The lock arm 311 is an L-shaped plate with the opening facing downward, and comprises a handle end 311b and a ratchet end 311a. The handle end 311b is the end where the long side of the lock arm 311 is located, and the ratchet end 311a is the end where the short side of the lock arm 311 is located. The lock arm fixing shaft 313 is located in the lower cavity and extends in the front-to-back direction, and the front and rear ends of the lock arm fixing shaft 313 are fixed to the rear side plate 11 and the lower front side plate 133 respectively. The ratchet end 311a of the lock arm 311 is rotatably mounted on the lock arm fixing shaft 313, and the handle 315 extends in the front-to-back direction and is located between the two lock arms 311 and mounted on the handle end 311b of the lock arm 311. The lock wheel 314 extends in the front-to-back direction, is located between the two lock arms 311 and is rotatably mounted at the bent portion of the lock arm 311, and is used to contact the sliding rope 4 to clamp the sliding rope 4 in cooperation with the power pulley 21. The elastic member is a torsion spring 312, which is sleeved on the lock arm fixing shaft 313 to drive the lock arm 311 to rotate upward around the lock arm fixing shaft 313.

[0048] The end of the ratchet end 311a of the lock arm 311 has a downward protruding flange 311c, and the flange 311c has a plurality of ratchet teeth 311d, which are used to cooperate with the limiting assembly 32 to keep the position of the lock arm 311.

[0049] The limiting assembly 32 is located in the lower cavity and comprises two pawls 321 arranged front to back, a pawl fixing shaft 323, a reset member and a fixing member. The pawl fixing shaft 323 is located below the lock arm fixing shaft 313 and extends in the front-to-back direction, and the front and rear ends of the pawl fixing shaft 323 are fixed to the rear side plate 11 and the lower front side plate 133 respectively. The pawl 321 comprises a base body 321a, a limiting tooth 321b and a connecting block 321c. The base body 321a is a ring-shaped block rotatably mounted on the pawl fixing shaft 323. The limiting tooth 321b is fixed to the upper side of the base body 321a, and the shape of the limiting tooth 321b is consistent with the shape of the ratchet tooth 311d, which is used to fix the rotation position of the lock arm 311 around the lock arm fixing shaft 313 by blocking the ratchet tooth 311d. The connecting block 321c is a downward protruding semicircular block located at the lower end of the base body 321a, and is used to connect the reset member.

[0050] The reset member is a tension spring 322, and the number of the tension spring 322 of each limiting component 32 is two. The two tension springs 322 are respectively located below the two pawls 321 and extend in the up-down direction. The upper end of the tension spring 322 is fixedly connected with the connecting block 321c of the corresponding pawl 321, the lower end of the front tension spring 322 is fixed on the rear side plate 11, and the lower end of the rear tension spring 322 is fixed on the lower front side plate 133, so as to provide a driving force for resetting the limiting tooth 321b. The fixing member is a spring 324, and the spring 324 is sleeved on the pawl fixing shaft 323, so as to keep the relative position between the two pawls 321 by pushing the two pawls 321. In other embodiments, the fixing member can also be omitted, and the relative position between the two pawls 321 can be kept by setting the two pawls 321 as an integral structure.

[0051] The lock wheel 314 and the handle 315 are located outside the lower cavity. The left and right ends of the top plate 132 and the bottom plate 131 correspond to each lock arm 311 and are provided with an avoiding slot 134, so that the ratchet end 311a of the lock arm 311 can pass through. Figure 7 、 Figure 8 and Figure 9 As shown in the drawings, the lock wheel 314 has a clamping state of clamping the sliding rope 4 in cooperation with the power sheave 21 under the driving of the elastic member and a release state of being away from the power sheave 21 under the blocking of the pawl 321.

[0052] When the lock wheel 314 clamps the sliding rope 4, the lock arm 311 is in a locking state of closing the sliding rope port 5. At this time, the pawl 321 is not in contact with the ratchet 311d, and the pawl 321 is in the middle position under the action of the tension spring 322. In the process of rotating the lock arm 311 clockwise around the lock arm fixing shaft 313 by the operator pulling down the handle 315, the lock wheel 314 and the sliding rope 4 are separated, the ratchet 311d on the lock arm 311 pushes the limiting tooth 321b on the pawl 321 to the left, and then the pawl 321 rotates counterclockwise. At this time, the limiting tooth 321b deviates to the left, the tension spring 322 is stretched, and the pawl 321 is in the left position. When the operator stops applying force, the lock arm 311 has a tendency to rotate counterclockwise under the action of the torsion spring 312. At this time, the limiting tooth 321b and the ratchet 311d are engaged, and the lock arm 311 can be blocked. In this state, the lock arm 311 is in a release position of opening the sliding rope port 5.

[0053] When the operator continues to pull down the handle 315, the ratchet 311d is completely separated from the limiting tooth 321b, and the lock arm 311 is in a disengagement position of disengaging from the pawl 321, and the pawl 321 is reset to the middle position under the action of the tension spring 322. When the operator releases the handle 315, the lock arm 311 rotates counterclockwise under the action of the torsion spring 312, the limiting tooth 321b deviates to the right under the pushing of the ratchet 311d, and the pawl 321 is in the right position. The pawl 321 in the right position can be freely pushed away by the counterclockwise rotating ratchet 311d until the lock arm 311 returns to the locking position.

[0054] The use principle of the single-cable electric rescue device is as follows:

[0055] First, before installation, the locking arm 311 of the rescue device is in the release position, the limiting teeth 321b of the pawl 321 and the ratchet teeth 311d are in the meshing state, at this time, the worker places the rescue device on the sliding cable 4 through the power pulley 21, and then pulls the handles 315 at the left and right ends of the lower frame 13 downward until the locking arm 311 of the rescue device rotates to the disengagement position, at this time, the handles 315 are released, and the two locking wheels 314 are driven to rotate upward by the torsional spring 312 until they are tightly pressed against the sliding cable 4, at this time, the rescue device can clamp the sliding cable 4 under the clamping of the power pulley 21 and the locking wheel 314, thereby preventing the rescue device and the sliding cable 4 from disengaging.

[0056] Then the worker remotely controls the pulley block 2 of the rescue device to work, drives the rescue device to move along the sliding cable 4 towards the to-be-rescued trolley, and after the rescue device moves to the position, the hook 111 hooks the to-be-rescued trolley, and then the worker controls the rescue device to move in the opposite direction, so as to pull the rescue trolley back to the lower platform.

[0057] After the rescue is completed, the worker pulls down the two handles 315 to the set position, the limiting teeth 321b on the pawl 321 realize the blocking of the ratchet teeth 311d on the locking arm 311 through the meshing surface, at this time, the locking wheel 314 can keep away from the sliding cable 4, and then the single-cable electric rescue device can be removed.

[0058] Embodiment 2 of the single-cable electric rescue device provided by the utility model:

[0059] The difference between the embodiment 1 and the embodiment 2 is mainly that:

[0060] In the embodiment 1, the reset member is a tension spring.

[0061] In the embodiment, the reset member is a torsional spring sleeved on the pawl fixing shaft, the middle part of the torsional spring is fixed on the pawl fixing shaft, and the two ends of the torsional spring are fixedly connected with the two pawls to provide a driving force for resetting the limiting teeth.

[0062] Embodiment 3 of the single-cable electric rescue device provided by the utility model:

[0063] The difference between the embodiment 1 and the embodiment 3 is mainly that:

[0064] In the embodiment 1, the elastic member is a torsional spring sleeved on the locking arm fixing shaft.

[0065] In the embodiment, the elastic member is a tension spring extending upward and downward in the lower cavity, the upper end of the tension spring is fixedly connected with the top plate, and the lower end of the tension spring is fixedly connected with the ratchet end of the locking arm to drive the locking arm to rotate upward.

[0066] According to the above description of the present specification, those skilled in the art can also understand that the terms used such as "upper", "lower", "front", "rear", "left", "right", "width", "horizontal", "top", "bottom", "inner", "outer" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings of the present specification, which are only for the purpose of facilitating the description of the scheme of the present application and simplifying the description, and are not explicitly or implicitly indicated that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation, therefore the above orientation or positional relationship terms cannot be understood or interpreted as a limitation on the scheme of the present application.

[0067] In addition, in the description of the present specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise explicitly and specifically limited.

Claims

1. A single cable electric rescue device comprising a frame with a cable opening, a pulley block, two locking mechanisms for opening and closing the cable opening, characterized in that: The locking mechanism comprises a switch assembly and a limiting assembly, the limiting assembly comprises a pawl rotatably installed on the frame and a reset member; the switch assembly comprises a lock arm rotatably installed on the frame, an elastic member and a lock wheel, a handle and a ratchet tooth provided on the lock arm; the lock arm rotates around the front-rear shaft and has a clockwise-arranged locking position for closing the slide rope port, a release position for opening the slide rope port and a disengaging position; the handle is used for operating the lock arm from the locking position to the release position and from the release position to the disengaging position; the elastic member is used for counterclockwise driving the lock arm to the locking position; the lock wheel is used for upwardly cooperating with the pulley block to clamp the slide rope or disengage the slide rope when the lock arm is in the locking position / release position; the pawl rotates around the front-rear shaft and has an anticlockwise-arranged left / middle / right position; the reset member is used for driving the pawl to the middle position; the pawl and the ratchet tooth have corresponding shapes to make the pawl in the left position have a meshing state of the ratchet mechanism and the pawl in the right position have a free state which can be freely pushed away by the ratchet tooth; the pawl in the meshing state prevents the lock arm from reversing when the handle operates the lock arm from the locking position to the release position; the pawl is disengaged from the ratchet tooth and returns to the middle position under the action of the reset member when the handle operates the lock arm from the release position to the disengaging position; the pawl in the free state avoids interfering with the lock arm when the lock arm is driven by the elastic member from the disengaging position to the locking position.

2. A single cable electrically powered rescue device according to claim 1, wherein, The number of the lock arms in each switch assembly is two, the lock arm is an L-shaped plate with an opening downward, the lock arm comprises a handle end and a ratchet tooth end, the handle is installed on the handle end, the lock wheel is rotatably installed on the bent part of the lock arm, and the ratchet tooth is located on the ratchet tooth end; the switch assembly further comprises a lock arm fixing shaft fixed on the frame and extending forward and backward, and the lock arm is rotatably installed on the lock arm fixing shaft through the ratchet tooth end.

3. A single cable electrically powered rescue device according to claim 2, wherein, The elastic member is a torsion spring sleeved on the lock arm fixing shaft, and the torsion spring is used for driving the lock arm to rotate upward.

4. A single cable electric rescue device according to claim 1, wherein, The limiting assembly further comprises a pawl fixing shaft fixed on the frame and extending forward and backward, and the number of the pawls in each limiting assembly is two; the pawl comprises a base body, a limiting tooth fixed on the upper end of the base body and used for cooperating with the ratchet tooth, and a connecting block located on the lower end of the base body and used for connecting the reset member; the base body is rotatably installed on the pawl fixing shaft, and the limiting tooth is used for stopping the ratchet tooth from rotating counterclockwise when the pawl is in the left position; The reset member is a tension spring extending in the up-down direction, the upper end of the tension spring is fixedly connected with the connecting block, and the lower end of the tension spring is fixed on the frame, so as to drive the pawl to return to the middle position.

5. A single cable electrically powered rescue device according to claim 4, wherein, The limiting assembly further comprises a fixing member sleeved on the pawl fixing shaft and located between the two pawls, and the fixing member is used for keeping the relative position between the two pawls.

6. A single cable electric rescue device according to claim 1, wherein, The pulley block comprises two power pulleys rotatably cooperating with the slide rope and a power source, and the power source is used for providing driving force to the power pulleys.

7. A single cable electrically operated rescue device according to claim 6, wherein, The frame comprises a rear side plate, an upper frame and a lower frame located below the upper frame; the upper frame and the lower frame are both fixed on the rear side plate, and the upper frame and the lower frame have a gap for the slide rope to pass through, so as to facilitate the electric rescue device to be installed on the slide rope through the gap; The power pulleys are installed on the upper end of the rear side plate, the upper frame comprises an upper cover plate located on the upper end of the power pulleys, two side plates located on the left and right ends of the power pulleys and an upper front side plate located on the front side of the power pulleys, so as to protect the power pulleys.

8. A single cable electrically powered rescue device according to claim 7, wherein, The lower frame comprises a bottom plate fixed on the rear side plate, a top plate fixed on the rear side plate and above the bottom plate, and a lower front side plate fixed on the front side of the bottom plate, the bottom plate being a U-shaped plate extending frontward and rearward; Two locking mechanisms are respectively located at the left and right ends of the bottom plate, the ratchet ends of the limiting assembly and the lock arm are both installed on the inner side of the bottom plate, and the bottom plate and the top plate correspond to the positions where the lock arm is located and are provided with avoiding grooves for the ratchet ends of the lock arm to pass through.

9. A single cable electric rescue device according to claim 8, wherein, The left end of the rear side plate is provided with a strike hook for locking the trolley, and the lower end of the rear side plate and the front end of the lower front side plate are both provided with hanging plates.

10. A single cable electric rescue device according to claim 7, wherein, The rear side of the rear side plate is provided with an electric control module, and the electric control module is electrically connected with the power pulley to realize remote control of the single-cable electric rescue device.

Images