An emergency escape device for cranes

Abstract

This utility model discloses an emergency escape device for cranes, relating to the field of crane emergency escape technology. It includes a fixing mechanism installed next to the crane door, a lifting mechanism, and a limiting mechanism. The lifting mechanism includes a winding rod and two fixed pulleys. Traction ropes are wound around the outer sides of both ends of the winding rod. The tops of the two traction ropes pass over the tops of the fixed pulleys and are connected to pedals. The limiting mechanism includes two sets of limiting blocks, each located at one end of the top of the pedal. A driving component is provided at the bottom of each of the two limiting blocks in the same set. This utility model uses a servo motor to drive the winding rod to rotate. Through the traction of the fixed pulleys and traction ropes, the pedals can move up and down. The driving component drives the limiting blocks to move, thus limiting the worker's legs and allowing the worker to stably evacuate from the crane cab in an emergency, ensuring the worker's safety.

Description

Technical Field

[0001] This utility model relates to the field of crane emergency escape technology, specifically to an emergency escape device for cranes. Background Technology

[0002] Cranes, broadly speaking, refer to all mechanical equipment capable of vertically lifting and horizontally moving heavy objects, encompassing various types such as bridge cranes, gantry cranes, and tower cranes. They include both stationary and mobile equipment. Cranes are a subset of cranes, typically referring specifically to mobile cranes, such as truck cranes, crawler cranes, and tire-mounted cranes. Their structural characteristic is the presence of tires or crawler chassis, allowing for rapid relocation to different work sites.

[0003] The existing technology has the following shortcomings: When a fire or other emergency occurs inside the cab of the existing crane during operation, the operator may accidentally fall into a hole due to the tension when escaping by climbing the ladder. Moreover, the operator's manual climbing up and down will affect the escape speed and thus affect the operator's safety. Utility Model Content

[0004] The purpose of this invention is to provide an emergency escape device for cranes. A servo motor drives a winding rod to rotate, and through the traction of a fixed pulley and a traction rope, it can move the pedal up and down. The drive component drives the limiting block to move, which can restrain the worker's legs, allowing the worker to stably evacuate from the crane cab in an emergency, thus ensuring the worker's safety and solving the aforementioned shortcomings in the technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an emergency escape device for a crane, comprising a fixing mechanism installed next to the crane door, and further comprising: The lifting mechanism is located inside the fixed mechanism, and the limiting mechanism is located on top of the lifting mechanism; The lifting mechanism includes a winding rod located at the bottom of the inner side of the fixed mechanism and two fixed pulleys located at the top of the inner side of the fixed mechanism. A servo motor is provided at one end of the winding rod, and traction ropes are wound around the outer sides of both ends of the winding rod. The tops of the two traction ropes pass over the tops of the fixed pulleys and are provided with pedals. The limiting mechanism includes two sets of limiting blocks, which are respectively disposed at both ends of the top of the pedal, and each of the two limiting blocks in the same set is provided with a driving component at the bottom.

[0006] Preferably, the fixing mechanism includes two mounting plates, two fixing rods are fixedly installed between the two mounting plates, and two connecting bolts are threaded into the inner wall of the end of each mounting plate near the crane.

[0007] Preferably, the top mounting plate has mounting bases fixedly installed at both ends of its bottom, and the two mounting bases are rotatably connected to two fixed pulleys respectively.

[0008] Preferably, the top of the bottom mounting plate is rotatably connected to the winding rod, one end of the outer wall of the bottom mounting plate is fixedly connected to the servo motor, and the servo motor is connected to one end of the winding rod through an output shaft.

[0009] Preferably, each of the two fixed rods has a movable groove on one side of its outer wall, and each of the two ends of the pedal's outer wall is fixedly installed with a movable seat. The outer walls of the two movable seats are slidably connected to the inner walls of the two movable grooves, respectively.

[0010] Preferably, support frames are fixedly installed at both ends of the bottom of the pedal, and one outer wall of each of the two support frames is slidably connected to the inner wall of each of the two movable grooves. Two connecting seats are fixedly installed on one side of the top of the pedal, and the two connecting seats are respectively connected to the ends of the two traction ropes away from the winding rod.

[0011] Preferably, the pedal has mounting slots at both ends, and the driving component includes an electric cylinder, which is fixedly installed on the inner wall of one end of one of the mounting slots.

[0012] Preferably, the piston rod of the electric cylinder is fixedly mounted with a slider, the outer wall of the slider is slidably connected to the inner wall of the adjacent mounting groove, the top of the slider is fixedly mounted with a connecting rod, and the bottom of the connecting rod is fixedly connected to the bottom of the adjacent limiting block.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. The servo motor is controlled by a remote control to drive the winding rod to rotate, which in turn drives the traction rope to wind up or extend. Guided by the fixed pulley, the pedal can move up and down along the fixed rod. At the same time, the drive component drives the limiting block to move, so that the two limiting blocks at the same end can clamp and limit the driver's legs. This allows the pedal to stably lift and lower the driver, enabling the driver to escape from the crane cab in an emergency and ensuring the driver's safety. 2. The movement of the slider can be limited by the mounting groove, so that the limiting block remains stable during the adjustment process. This allows the limiting block to stably clamp and restrict the legs of the escapee. At the same time, the movable groove can limit the movement of the movable seat and support frame, so that the pedal remains stable during the movement. This allows the escapee to escape from the crane cab stably and quickly, ensuring the safety of the escapee. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a front vertical sectional view of the present invention.

[0017] Figure 3 This utility model Figure 2 Enlarged view of part A in the image.

[0018] Figure 4 This is an exploded view of the fixing mechanism of this utility model.

[0019] Figure 5 This is an exploded view of the lifting mechanism and limiting mechanism of this utility model.

[0020] Explanation of reference numerals in the attached figures: 1. Fixing mechanism; 101. Mounting plate; 102. Fixing rod; 103. Connecting bolt; 104. Mounting base; 105. Movable groove; 2. Lifting mechanism; 201. Winding rod; 202. Servo motor; 203. Traction rope; 204. Fixed pulley; 205. Connecting seat; 206. Pedal; 207. Movable seat; 208. Support frame; 3. Limiting mechanism; 301. Mounting slot; 302. Electric cylinder; 303. Slider; 304. Connecting rod; 305. Limiting block. Detailed Implementation

[0021] This utility model provides, for example Figure 1 An emergency escape device for a crane, as shown, includes a fixing mechanism 1 installed next to the crane door, and further includes: The lifting mechanism 2 is located inside the fixed mechanism 1, and the limiting mechanism 3 is located on the top of the lifting mechanism 2.

[0022] To ensure the operator can safely escape from the crane cab, such as Figure 1-5As shown, the lifting mechanism 2 includes a winding rod 201 located at the bottom inner side of the fixed mechanism 1 and two fixed pulleys 204 located at the top inner side of the fixed mechanism 1. A servo motor 202 is installed at one end of the winding rod 201, and traction ropes 203 are wound around the outer sides of both ends of the winding rod 201. The tops of the two traction ropes 203 pass over the tops of the fixed pulleys 204 and are equipped with pedals 206. The limiting mechanism 3 includes two sets of limiting blocks 305, which are respectively located at the top ends of the pedals 206. The bottoms of the two limiting blocks 305 in the same set are equipped with driving components. The driver... Stepping on the top of the pedal 206 causes the driving component to move the limiting block 305, which in turn restricts the legs of the person escaping, keeping them stable on the top of the pedal 206. Then, the remote control causes the servo motor 202 to drive the winding rod 201 to rotate, which in turn drives the traction rope 203 to be laid out. Guided by the fixed pulley 204, the pedal 206 can move up and down on the outer wall of the fixed mechanism 1, allowing the driver to quickly escape from the crane cab through the lifting mechanism 2.

[0023] For ease of installation and fixation of the device, such as Figure 1-2 and Figure 4-5 As shown, the fixing mechanism 1 includes two mounting plates 101, with two fixing rods 102 fixedly installed between the two mounting plates 101. Two connecting bolts 103 are threaded into the inner wall of the end of each mounting plate 101 near the crane. Mounting seats 104 are fixedly installed at both ends of the bottom of the top mounting plate 101. The two mounting seats 104 are rotatably connected to two fixed pulleys 204 respectively. The top of the bottom mounting plate 101 is rotatably connected to the winding rod 201. The outer wall of one end of the bottom mounting plate 101 is fixedly connected to the servo motor 202. The servo motor 202 is connected to one end of the winding rod 201 through an output shaft. The connecting bolts 103 pass through the mounting plate 101 and are threadedly connected to the outer wall of the crane, allowing the device to be installed next to the crane cab. The two fixed pulleys 204 can be installed through the two mounting seats 104, and the winding rod 201 and the servo motor 202 can be installed and fixed on the bottom mounting plate 101, so that the lifting mechanism 2 can work stably.

[0024] To ensure the stability of pedal 206 during lifting and lowering, such as Figure 2 and Figure 4-5As shown, each of the two fixed rods 102 has a movable groove 105 on one side of its outer wall. Each of the two ends of the outer wall of the pedal 206 has a movable seat 207 fixedly installed. The outer walls of the two movable seats 207 are slidably connected to the inner walls of the two movable grooves 105 respectively. Each of the two ends of the bottom of the pedal 206 has a support frame 208 fixedly installed. The outer walls of the two support frames 208 are slidably connected to the inner walls of the two movable grooves 105 respectively. Two connecting seats 205 are fixedly installed on one side of the top of the pedal 206. The two connecting seats 205 are respectively connected to the ends of the two traction ropes 203 away from the winding rod 201. The movable grooves 105 can limit the movement of the movable seats 207 and the support frames 208, so that the pedal 206 remains stable during the lifting process, and can stably carry the driver to escape.

[0025] To keep the driver stable on pedal 206, such as Figure 2-3 and Figure 5 As shown, mounting slots 301 are provided at both ends of the top of the pedal 206. The driving component includes an electric cylinder 302. The electric cylinder 302 is fixedly installed on the inner wall of one end of one of the mounting slots 301. A slider 303 is fixedly installed on the piston rod of the electric cylinder 302. The outer wall of the slider 303 is slidably connected to the inner wall of the adjacent mounting slot 301. A connecting rod 304 is fixedly installed on the top of the slider 303. The bottom of the connecting rod 304 is fixedly connected to the bottom of the adjacent limiting block 305. The mounting slot 301 can install and fix the two electric cylinders 302 at the same end. When the electric cylinder 302 works, it drives the adjacent slider 303 to move along the inner wall of the mounting slot 301, thereby adjusting the distance between the two limiting blocks 305 at the same end. This allows the two limiting blocks 305 at the same end to clamp and limit the legs of the escapee, keeping the escapee stable on the pedal 206.

[0026] During installation and use, connecting bolts 103 are used to penetrate the mounting plate 101 and connect to the outer wall of the crane via threads. This allows the fixing mechanism 1 to be installed next to the crane cab. In case of an emergency in the crane cab, the operator steps on the pedal 206 and uses a remote control to extend or retract the two electric cylinders 302 at the same end. This causes the sliders 303 at the same end to move relative to each other along the inner wall of the mounting groove 301. Under the connection of the connecting rod 304, the two limiting blocks 305 at the same end can move relative to each other or away from each other. The two limiting blocks 305 at the same end can clamp and restrain the operator's legs. Then, the remote control causes the servo motor 202 to drive the winding rod 201. The rotation of the traction rope 203 allows it to be laid out. Guided by the fixed pulley 204 and connected to the connecting seat 205, the pedal 206 moves up and down along the outer wall of the fixed rod 102. At the same time, the movable groove 105 limits the movement of the movable seat 207 and the support frame 208, keeping the pedal 206 stable during lifting and lowering. This allows the operator to escape from the crane cab in a stable manner, ensuring the operator's safety in an emergency. This embodiment specifically solves the problem in the prior art that operators cannot escape from the crane cab quickly and safely.

[0027] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An emergency escape device for a crane, comprising a fixing mechanism (1) installed beside the crane door, characterized in that, Also includes: The lifting mechanism (2) is located inside the fixed mechanism (1) and the limiting mechanism (3) is located on the top of the lifting mechanism (2). The lifting mechanism (2) includes a winding rod (201) located at the bottom of the inner side of the fixed mechanism (1) and two fixed pulleys (204) located at the top of the inner side of the fixed mechanism (1). A servo motor (202) is provided at one end of the winding rod (201), and traction ropes (203) are wound around the outer sides of both ends of the winding rod (201). The tops of the two traction ropes (203) pass over the tops of the fixed pulleys (204) and are provided with pedals (206). The limiting mechanism (3) includes two sets of limiting blocks (305), which are respectively disposed at the top two ends of the pedal (206), and the bottom of the two limiting blocks (305) in the same set is provided with a driving component.

2. The emergency escape device for a crane according to claim 1, characterized in that: The fixing mechanism (1) includes two mounting plates (101), two fixing rods (102) are fixedly installed between the two mounting plates (101), and two connecting bolts (103) are threaded into the inner wall of the end of the two mounting plates (101) near the crane.

3. The emergency escape device for a crane according to claim 2, characterized in that: The mounting plate (101) at the top has mounting bases (104) fixedly installed at both ends of its bottom. The two mounting bases (104) are rotatably connected to two fixed pulleys (204).

4. The emergency escape device for a crane according to claim 2, characterized in that: The top of the mounting plate (101) at the bottom is rotatably connected to the winding rod (201), and the outer wall of one end of the mounting plate (101) at the bottom is fixedly connected to the servo motor (202). The servo motor (202) is connected to one end of the winding rod (201) through an output shaft.

5. The emergency escape device for a crane according to claim 2, characterized in that: The outer walls of the two fixed rods (102) are provided with movable grooves (105), and the two ends of the outer wall of the pedal (206) are fixedly installed with movable seats (207). The outer walls of the two movable seats (207) are slidably connected to the inner walls of the two movable grooves (105).

6. The emergency escape device for a crane according to claim 5, characterized in that: Support frames (208) are fixedly installed at both ends of the bottom of the pedal (206). The outer wall of one side of the two support frames (208) is slidably connected to the inner wall of the two movable grooves (105). Two connecting seats (205) are fixedly installed on one side of the top of the pedal (206). The two connecting seats (205) are respectively connected to the end of the two traction ropes (203) away from the winding rod (201).

7. The emergency escape device for a crane according to claim 1, characterized in that: The pedal (206) has mounting slots (301) at both ends of its top. The driving component includes an electric cylinder (302), which is fixedly installed on the inner wall of one end of one of the mounting slots (301).

8. The emergency escape device for a crane according to claim 7, characterized in that: The piston rod of the electric cylinder (302) is fixedly mounted with a slider (303). The outer wall of the slider (303) is slidably connected to the inner wall of the adjacent mounting groove (301). A connecting rod (304) is fixedly mounted on the top of the slider (303). The bottom of the connecting rod (304) is fixedly connected to the bottom of the adjacent limiting block (305).

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