Hoisting device for double-block ballastless track platform

Abstract

The invention discloses a hoisting device for a double-block ballastless track platform, and relates to the technical field of track hoisting transportation, the hoisting device comprises a hoisting support, a hoisting mechanism and a track clamping mechanism, the hoisting support is composed of a cross beam and side supports, the side supports are installed at the two ends of the cross beam, the hoisting mechanism is installed on the cross beam, and the track clamping mechanism is installed on the cross beam. The rail clamping mechanism is connected with the hoisting mechanism, the rail clamping mechanism is located below the hoisting mechanism, the hoisting mechanism can lift the rail clamping mechanism, the hoisting mechanism can also move on the cross beam and can adapt to rails of different sizes, a reinforcing beam is installed in the middle of the side edge support, wheels are installed at the bottom of the side edge support, and the reinforcing beam is connected with the hoisting mechanism. A fixing table is installed on one side of the reinforcing beam, a buffering mechanism is installed on the fixing table, when the hoisting mechanism drives the track clamping mechanism to move towards the fixing table, certain inertia exists, shaking is generated, and the buffering mechanism can reduce shaking.

Description

Technical Field

[0001] The invention relates to the technical field of track hoisting and transportation, in particular to a hoisting device for a double-block ballastless track platform. Background Art

[0002] Ballastless track, also known as ballastless track, uses an integral foundation of concrete, asphalt mixture, etc. to replace the track structure of the granular gravel roadbed. Since the ballastless track uses concrete materials, the overall stiffness of the ballastless track is better than that of the ballasted track. It will not cause bumps and noise due to the gap between the rails and ballast, and avoids ballast splashing. The train runs more smoothly and reduces vehicle wear. The ballastless track roadbed is integrated, the track is not easy to displace, has excellent anti-settlement and deformation properties, is highly resistant to freezing, and has good stability.

[0003] Prior art CN201210244680.2 discloses an integrated hoisting and transporting equipment for ballastless track construction, and the technical solution discloses that "the present invention provides an integrated hoisting and transporting equipment for ballastless track construction. The hoisting and transporting equipment includes a traveling device and a plurality of lifting devices installed on the traveling device, and is characterized in that: the traveling device is composed of one or more traveling brackets with traveling wheels installed at the bottom, each traveling bracket includes a left and a right A-shaped bracket and a crossbeam arranged between the two A-shaped brackets, and the crossbeam is arranged at the top of the two A-shaped brackets to fix the left and right A-shaped brackets together; two lifting devices are arranged on each traveling bracket, and the lifting devices are respectively fixed to the crossbeam through their lifting devices, and a connecting member fixedly connected to the adjacent traveling bracket is arranged at the bottom of each traveling bracket. The present invention reduces the labor intensity of manual labor, can transport tool rails and roadbed templates over a short distance, greatly improves the efficiency of heavy material reversing in double-block ballastless track construction, and saves costs; this integrated hoisting and transporting equipment can also assist in the assembly of rail rows and templates.";

[0004] Although the prior art discloses a rail hoisting and transportation equipment, the existing rail hoisting and transportation equipment still has certain shortcomings, specifically: 1. The above technical solution does not have a fixing mechanism, and the track will shake when workers use the transportation equipment to transport the track; 2. The above technical solution requires manual operation of the hoist to clamp the track, and the workers can only adjust the distance between the two hoists by adjusting the length of the beam, which is extremely inconvenient. Summary of the invention

[0005] The object of the present invention is to provide a hoisting device for a double-block ballastless track platform to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a hoisting device for a double-block ballastless track platform, comprising a hoisting bracket, a hoisting mechanism and a track clamping mechanism, wherein the hoisting bracket is composed of a crossbeam and a side bracket, wherein the side bracket is mounted at both ends of the crossbeam, the hoisting mechanism is mounted on the crossbeam, the track clamping mechanism is connected to the hoisting mechanism, and the track clamping mechanism is located below the hoisting mechanism. The hoisting mechanism can raise and lower the track clamping mechanism, and the hoisting mechanism can also move on the crossbeam, and can adapt to tracks of different sizes.

[0007] A reinforcing beam is installed in the middle of the side bracket, a wheel is installed at the bottom of the side bracket, a fixing platform is installed on one side of the reinforcing beam, and a buffer mechanism is installed on the fixing platform. When the hoisting mechanism drives the track clamping mechanism to move toward the fixing platform, there will be a certain inertia, resulting in shaking, and the buffer mechanism can reduce the shaking.

[0008] A buffer block is slidably installed inside the buffer mechanism, a part of the buffer block extends out from the buffer mechanism, a slide is also installed inside the buffer mechanism, the slide is located on one side of the buffer block, a buffer spring is installed between the buffer block and the slide, a slider is slidably installed on the slide, connecting rods are rotatably connected on both sides of the slider, and one end of the connecting rod is connected to the buffer block.

[0009] The slide is a trapezoidal slide, the upper bottom surface and the bottom of the inclined surface of the slide are provided with triangular blocks, the slider has a smooth surface and a rough surface, and when the slider slides downward along the inclined surface of the slide, the surface of the slider in contact with the slide is a smooth surface;

[0010] When the slider slides upward along the inclined surface of the slide table, the surface of the slider in contact with the slide table is a rough surface. The buffer table is impacted, driving the connecting rod to move, the buffer spring is compressed to absorb energy, the connecting rod drives the slider to move downward along the inclined surface of the slide table, and when it moves to the triangular block at the bottom of the inclined surface, the triangular block forces the slider to rotate, and the smooth surface of the slider switches to the rough surface. The clamping spring is compressed and rebounds, pushing the buffer block to slide, the buffer block drives the connecting rod to move, and the connecting rod drives the slider to slide upward along the inclined surface of the slide table. The smooth surface of the slider becomes a rough surface, the friction force is large, and a certain damping effect is achieved. When the slider slides to the triangular block on the plane of the slide table, the triangular clamp forces the slider to rotate, and the rough surface of the slider switches to a smooth surface.

[0011] Grooves are provided on both sides of the crossbeam, and racks and limit blocks are arranged in the grooves, wherein the limit blocks are located above the racks. The limit blocks prevent the hoisting mechanism from moving to the edge of the crossbeam.

[0012] The hoisting mechanism comprises a frame, a mobile motor and a crane, the frame is an "H"-shaped frame, the mobile motor and the crane are installed on the frame, the mobile motor is located above the crane, a gear is installed on the inner side of the frame, the gear is connected with the output shaft of the mobile motor, the gear is meshed with the rack, a slide groove is opened on the inner side of the frame, the slide groove is located below the gear, a blocking block and an electromagnet are slidably installed in the slide groove, the blocking block is located above the electromagnet, a blocking spring is arranged between the blocking block and the electromagnet, the blocking block is made of iron, the electromagnet and the mobile motor share the same power supply, a hook is connected to the wire rope of the crane, the hook is connected to the track clamping mechanism, when the mobile motor is powered on, the electromagnet is powered on to generate magnetism, and the magnetic force causes the blocking block to compress the blocking spring downward;

[0013] When the mobile motor is powered off and stops running, the electromagnet is powered off, the magnetism disappears, the locking spring rebounds upward, the locking spring pushes the locking block to move upward, the locking block extends into the gear tooth groove, and limits the rotation of the gear. After the hoisting mechanism moves to a suitable position on the beam, the power is disconnected, the mobile motor is powered off, the electromagnet is also powered off, the electromagnet loses its magnetism, the locking spring rebounds, the locking spring pushes the locking block to move upward, the locking block is stuck in the gear tooth groove, and the gear rotation is limited, which plays a self-locking function.

[0014] The rail clamping mechanism comprises a shell, a lifting ring is arranged on the top of the shell, the lifting ring is connected to the lifting hook, a fixing pin is installed on the side of the shell, a fixing hole is opened on the protruding part of the fixing platform, and the edge of the fixing hole is rounded. The fixing pin can cooperate with the fixing hole to prevent the rail clamping mechanism from shaking, and the rounded edge of the fixing hole facilitates the fixing pin to extend into the fixing hole.

[0015] A straight groove is provided on the side of the shell, a platform is provided inside the shell, the platform is a "Π"-shaped platform, a clamping motor is installed on the platform, a screw is connected to the output shaft of the clamping motor, the screw passes through the platform, cross connecting plates are rotatably installed on both sides of the platform, one end of the cross connecting plate is hinged with a cross hook plate, the straight groove is provided on both sides of the platform, a nut block is meshed with the screw, a pin is connected to both ends of the nut block, the pin is hinged with the cross hook plate, and the pin passes through the straight groove. The clamping motor runs, driving the screw to rotate, the screw is meshed with the nut block, the nut block moves upward along the screw, the nut block drives the pin to move upward in the straight groove, the pin moves upward and drives the cross hook plate to move upward, the cross hook plate moves upward and drives the cross connecting plate to rotate, the cross connecting plate rotates and drives the cross hook plate to rotate, and the cross hook plate hook contracts to clamp the track.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0017] 1. The mobile motor of the present invention controls the lifting mechanism to move on the beam, and it is simple and convenient for workers to adjust the position between the lifting mechanism and the track. The present invention can clamp track platforms of different sizes and has a wide range of applications.

[0018] 2. When the mobile motor is powered on and started, the electromagnet is powered on to generate magnetism, and the magnetic force causes the blocking block to move downward. The blocking block compresses the blocking spring downward, and the blocking block extends from the gear tooth groove. The output shaft of the mobile motor can drive the gear to rotate. When the mobile motor is turned off and powered off, the electromagnet loses power and loses magnetism. The blocking spring rebounds and pushes the blocking block to move upward. The blocking block is stuck in the gear tooth groove, so that the mobile motor has a self-locking function.

[0019] 3. Workers clamp or loosen the track by switching the clamping motor, and do not need to manually install the clamp, which greatly reduces labor intensity. In addition, the invention clamps the track quickly, greatly improving work efficiency.

[0020] 4. A fixing pin is installed on the side of the outer shell of the track clamping mechanism of the present invention, which can cooperate with the fixing hole on the fixing platform, so that the shaking of the track during transportation is greatly reduced. A buffer mechanism is arranged on the fixing platform to reduce the shaking of the track clamping mechanism and facilitate the cooperation between the fixing pin and the fixing hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a three-dimensional structural diagram of the overall appearance of the present invention;

[0023] Figure 2 It is a front view of the overall appearance of the present invention;

[0024] Figure 3 It is a side view of the overall appearance of the present invention;

[0025] Figure 4 is a schematic diagram of the hoisting mechanism of the present invention;

[0026] Figure 5 The present invention Figure 4 A magnified image of area A;

[0027] Figure 6 is a partial cross-sectional view of the hoisting mechanism of the present invention;

[0028] Figure 7 is a schematic diagram of the interior of the track clamping mechanism of the present invention;

[0029] Figure 8 It is a schematic diagram of the interior of the buffer mechanism of the present invention;

[0030] Fig. 9 It is a schematic diagram of the hoisting of the double-block ballastless track platform of the present invention.

[0031] In the figure: 1. lifting bracket; 2. lifting mechanism; 3. track clamping mechanism; 4. buffer mechanism; 101. cross beam; 102. side bracket; 103. reinforcement beam; 104. fixed platform; 105. limit block; 201. mobile motor; 202. gear; 203. crane; 204. hook; 205. positioning block; 206. positioning spring; 207. electromagnet; 208. frame; 301. clamping motor; 302. nut block; 303. screw; 304. pin shaft; 305. cross connecting plate; 306. cross hook plate; 307. fixing pin; 308. platform; 401. buffer block; 402. slider; 403. buffer spring; 404. slide; 405. connecting rod; 406. triangular block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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.

[0033] See also Figure 1-Figure 9 The present invention provides a technical solution: a hoisting device for a double-block ballastless track platform, including a hoisting bracket 1, a hoisting mechanism 2, and a track clamping mechanism. The hoisting bracket 1 is composed of a crossbeam 101 and a side bracket 102. The side bracket 102 is installed at both ends of the crossbeam 101, and the hoisting mechanism 2 is installed on the crossbeam 101. The track clamping mechanism 2 is connected to the hoisting mechanism 2, and the track clamping mechanism 3 is located below the hoisting mechanism 2.

[0034] Grooves are formed on both sides of the crossbeam 101 , and racks and limit blocks 105 are arranged in the grooves. The limit blocks 105 are located above the racks.

[0035] The hoisting mechanism 2 includes a frame 208, a mobile motor 201 and a crane 203. The frame 208 is an "H"-shaped frame. The mobile motor 201 and the crane 203 are installed on the frame 208. The mobile motor 201 is located above the crane 203. A gear 202 is installed on the inner side of the frame 208. The gear 202 is connected to the output shaft of the mobile motor 201. The gear 202 is meshed with the rack. A slide groove is opened on the inner side of the frame 208. The slide groove is located below the gear 202. A positioning block 202 is slidably installed in the slide groove. 5 and electromagnet 207, the positioning block 205 is located above the electromagnet 207, a positioning spring 206 is arranged between the positioning block 205 and the electromagnet 207, the positioning block 205 is made of iron, the electromagnet 207 is electrically connected to the mobile motor 201, the wire rope of the crane 203 is connected with the hook 204, and the hook 204 is connected to the track clamping mechanism 3. When the mobile motor 201 is powered on, the electromagnet 207 is powered on to generate magnetism, and the magnetic force causes the positioning block 205 to compress the positioning spring 206 downward;

[0036] When the moving motor 201 is powered off and stops running, the electromagnet 207 is powered off, the magnetism disappears, the locking spring 206 rebounds upward, the locking spring 206 pushes the locking block 205 to move upward, and the locking block 205 extends into the tooth groove of the gear 202 to limit the rotation of the gear 202.

[0037] A reinforcing beam 103 is installed in the middle of the side bracket 102 , wheels are installed at the bottom of the side bracket 102 , a fixing platform 104 is installed on one side of the reinforcing beam 103 , and a buffer mechanism 4 is installed on the fixing platform 104 .

[0038] The rail clamping mechanism 3 comprises a shell, a lifting ring is arranged on the top of the shell, the lifting ring is connected to the lifting hook 204, a fixing pin 307 is installed on the side of the shell, a fixing hole is opened on the protruding part of the fixing platform 104, and the edge of the fixing hole is rounded.

[0039] A straight groove is provided on the side of the shell, and a platform 308 is arranged inside the shell. The platform 308 is a "Π"-shaped platform. A clamping motor 301 is installed on the platform 308. The output shaft of the clamping motor 301 is connected to a screw rod 303, and the screw rod 303 passes through the platform 308. Cross connecting plates 306 are rotatably installed on both sides of the platform 308. One end of the cross connecting plate 306 is hinged with a cross hook plate 305. Straight grooves are provided on both sides of the platform 308. The screw rod 303 is meshed with a nut block 302. Pins 304 are connected to both ends of the nut block 302. The pins 304 are hinged to the cross hook plate, and the pins 304 pass through the straight grooves.

[0040] The buffer mechanism 4 includes a buffer shell, a buffer block 401 is slidably installed inside the buffer shell, a part of the buffer block 401 extends out from the inside of the buffer shell, a slide 404 is also installed inside the buffer shell, the slide 404 is located on one side of the buffer block 401, a buffer spring 403 is installed between the buffer block 401 and the slide 404, a slider 402 is slidably installed on the slide 404, and connecting rods 405 are rotatably connected on both sides of the slider 402, and one end of the connecting rod 405 is connected to the buffer block 401.

[0041] The slide 404 is a trapezoidal slide. A triangular block 406 is provided on the upper bottom surface and the bottom of the inclined surface of the slide 404. The slider 402 has a smooth surface and a rough surface. When the slider 402 slides downward along the inclined surface of the slide 404, the surface where the slider 402 contacts the slide 404 is a smooth surface.

[0042] When the slider 402 slides upward along the inclined surface of the slide table 404, the contact surface between the slider 402 and the slide table 404 is a rough surface.

[0043] The working principle of the present invention is as follows: a worker starts the mobile motor 201, the mobile motor 201 is energized, the electromagnet 207 is energized to generate magnetism, the magnetic force causes the locking block 205 to compress the locking spring 206 downward, the locking block 205 slides out of the tooth groove of the gear 202, the gear 202 can rotate, the output shaft of the mobile motor 201 drives the gear 202 to rotate, the gear 202 meshes on the rack, the gear 202 drives the mobile motor 201 to move, the mobile motor 201 drives the frame 208 to move on the beam 101, after the frame 208 moves above the track, the worker turns off the mobile motor 201.

[0044] The worker starts the crane 203, the crane 203 releases the wire rope, the hook 204 moves downward, the hook 204 drives the track clamping mechanism 3 to move downward, after the cross hook plate 305 of the track clamping mechanism 3 approaches the track, the worker closes the crane 203, the worker starts the clamping motor 301, the output shaft of the clamping motor 301 drives the screw 303 to rotate, the screw 303 drives the meshing nut block 302 to move upward along the screw 303, the nut block 303 drives the pin 304 to move upward in the straight groove, the pin 304 moves upward and drives the cross hook plate 305 to move upward, the cross hook plate 305 drives the cross connecting plate 306 to rotate, the cross connecting plate 306 drives the cross hook plate 305 to rotate, after the cross hook plate 305 tightens the track, the worker closes the clamping motor 301.

[0045] The worker starts the crane 203, the crane 203 tightens the wire rope, the wire rope drives the hook 204 to move upward, the hook 204 drives the track clamping mechanism 3 to move upward, the track clamping mechanism 3 drives the track to move upward, and after the track is lifted to a certain height, the worker turns off the crane 203. The worker starts the mobile motor 201, the mobile motor 201 drives the frame 208 to move, the frame 208 moves to the position of the limit block 105 and stops moving, the worker turns off the mobile motor 201, the mobile motor 201 is powered off, the electromagnet 207 is powered off and loses its magnetism, the locking spring 206 rebounds upward, the locking spring 206 pushes the locking block 205 to move upward, the locking block 205 extends into the tooth groove of the gear 202, the gear 202 cannot rotate, and forms a self-locking.

[0046] After the frame 208 stops moving, the track clamping mechanism 3 still has a certain inertia and will shake. When the track clamping mechanism 3 shakes, the outer shell of the track clamping mechanism 3 will push the buffer block 401, and the movement of the buffer block 401 drives the connecting rod 405 to move. The buffer block 401 compresses the buffer spring 403 at the same time, and the connecting rod 405 drives the slider 402 to slide downward along the inclined surface of the slide 404. When the slider 402 slides to the triangular block 406 at the bottom of the inclined surface of the slide 404, the triangular block 406 causes the slider 402 to rotate, and the sliding surface of the slider 402 changes from a smooth surface to a rough surface, and the positioning spring 206 rebounds. The locking spring 206 pushes the buffer block 401 to move, and the buffer block 401 drives the connecting rod 405 to move, and the connecting rod 405 drives the slider 402 to slide along the upper side of the inclined surface of the slide table 404. When the slider 402 slides to the position of the triangular block 406 on the surface of the slide table 404, the triangular block 406 causes the slider 402 to rotate, and the sliding surface of the slider 402 changes from a rough surface to a smooth surface. When the slider 402 slides along the inclined surface of the slide table 404, the sliding surface becomes a rough surface, the friction force becomes larger, and a certain damping effect is played. The buffer mechanism 4 reduces the shock of the track clamping mechanism 3, and the shaking of the track clamping mechanism 3 is rapidly reduced.

[0047] The worker starts the crane 203, and the crane 203 continues to tighten the wire rope. The wire rope drives the hook 204 to move upward, and the hook 204 drives the track clamping mechanism 3 to move upward. The fixing pin 307 on the outer shell of the track clamping mechanism 3 also moves upward until the fixing pin 307 extends into the fixing hole of the fixing platform 104. The worker closes the crane 203, and the track clamping mechanism 3 is connected to the fixing platform 104 to reduce the shaking of the track clamping mechanism 3 during transportation.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by 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 hoisting device for a double-block ballastless track platform, characterized in that: The invention comprises a hanging bracket (1), a hanging mechanism (2) and a track clamping mechanism (3); the hanging bracket (1) is composed of a crossbeam (101) and a side bracket (102); the side bracket (102) is mounted on both ends of the crossbeam (101); the hanging mechanism (2) is mounted on the crossbeam (101); the track clamping mechanism (3) is connected to the hanging mechanism (2); and the track clamping mechanism (3) is located below the hanging mechanism (2).

2. The hoisting device for a double-block ballastless track platform according to claim 1, characterized in that: A reinforcing beam (103) is installed in the middle of the side bracket (102), wheels are installed at the bottom of the side bracket (102), a fixing platform (104) is installed on one side of the reinforcing beam (103), and a buffer mechanism (4) is installed on the fixing platform (104).

3. The hoisting device for a double-block ballastless track platform according to claim 2, characterized in that: The buffer mechanism (4) comprises a buffer shell, a buffer block (401) is slidably installed inside the buffer shell, a part of the buffer block (401) extends out from the inside of the buffer shell, a slide table (404) is also installed inside the buffer shell, the slide table (404) is located on one side of the buffer block (401), a buffer spring (403) is installed between the buffer block (401) and the slide table (404), a slider (402) is slidably installed on the slide table (404), and connecting rods (405) are rotatably connected on both sides of the slider (402), and one end of the connecting rod (405) is connected to the buffer block (401).

4. The hoisting device for a double-block ballastless track platform according to claim 3, characterized in that: The slide (404) is a trapezoidal slide, and a triangular block (406) is provided on the upper bottom surface and the bottom of the inclined surface of the slide (404). The slider (402) has a smooth surface and a rough surface. When the slider (402) slides downward along the inclined surface of the slide (404), the surface where the slider (402) contacts the slide (404) is a smooth surface. When the slider (402) slides upward along the inclined surface of the slide table (404), the surface where the slider (402) contacts the slide table (404) is a rough surface.

5. The hoisting device for a double-block ballastless track platform according to claim 4, characterized in that: Grooves are provided on both sides of the crossbeam (101), and racks and limit blocks (105) are arranged in the grooves. The limit blocks (105) are located above the racks.

6. The hoisting device for a double-block ballastless track platform according to claim 5, characterized in that: The hoisting mechanism (2) comprises a frame (208), a mobile motor (201) and a crane (203); the frame (208) is an "H"-shaped frame; the mobile motor (201) and the crane (203) are mounted on the frame (208); the mobile motor (201) is located above the crane (203); a gear (202) is mounted on the inner side of the frame (208); the gear (202) is connected to the output shaft of the mobile motor (201); the gear (202) is meshed with the rack; a slide groove is provided on the inner side of the frame (208); the slide groove is located below the gear (202); a positioning block (205) is slidably mounted in the slide groove ) and an electromagnet (207), the positioning block (205) is located above the electromagnet (207), a positioning spring (206) is arranged between the positioning block (205) and the electromagnet (207), the positioning block (205) is made of iron, the electromagnet (207) and the mobile motor (201) share the same power supply, a hook (204) is connected to the wire rope of the crane (203), and the hook (204) is connected to the track clamping mechanism (3), when the mobile motor (201) is powered on, the electromagnet (207) is powered on to generate magnetism, and the magnetic force causes the positioning block (205) to compress the positioning spring (206) downward; When the moving motor (201) is powered off and stops running, the electromagnet (207) is powered off, the magnetism disappears, the locking spring (206) rebounds upward, the locking spring (206) pushes the locking block (205) to move upward, and the locking block (205) extends into the tooth groove of the gear (202), limiting the rotation of the gear (202).

7. The hoisting device for a double-block ballastless track platform according to claim 6, characterized in that: The rail clamping mechanism (3) comprises a shell, a lifting ring is arranged above the shell, the lifting ring is connected to the lifting hook (204), a fixing pin (307) is installed on the side of the shell, and a fixing hole is opened on the protruding part of the fixing platform (104), and the edge of the fixing hole is rounded.

8. The hoisting device for a double-block ballastless track platform according to claim 7, characterized in that: A straight groove is provided on the side of the shell, and a platform (308) is arranged inside the shell. The platform (308) is a "Π"-shaped platform. A clamping motor (301) is installed on the platform (308). The output shaft of the clamping motor (301) is connected with a screw rod (303), and the screw rod (303) passes through the platform (308). Cross connecting plates (306) are rotatably installed on both sides of the platform (308), and one end of the cross connecting plate (306) is hinged with a cross hook plate (305). The straight grooves are provided on both sides of the platform (308), and the screw rod (303) is meshed with a nut block (302). Pins (304) are connected at both ends of the nut block (302), and the pins (304) are hinged with the cross hook plate, and the pins (304) pass through the straight grooves.

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