Double-layer speed chain elevator

Abstract

The utility model relates to the technical field of transportation, and discloses a double-layer speed chain elevator which comprises a first lifting mechanism, a machine frame is arranged on the outer side of the first lifting mechanism, an upper-layer speed chain mechanism and a lower-layer speed chain mechanism are fixedly installed on the top of the machine frame, and a no-load plate is arranged on the top of the machine frame. And a buffer stop block is arranged on the outer side of the no-load plate. According to the double-layer speed chain elevator, through the design of the first belt wheel, the second transmission belt and the third transmission belt, the belt transmission has the good damping effect, the belt transmission cost is lower, the service life is longer, the maintenance and replacement cost is relatively low, through the design of the buffering check blocks, the no-load plates are buffered, collision is avoided, and the service life of the elevator is prolonged. And due to the design of the sliding blocks and the sliding rails, the air cylinder is more stable during working, the sliding blocks and the sliding rails also play a certain limiting role, and due to the design of the two sliding blocks and the two sliding rails, the stability is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transportation, in particular to a double-layer double-speed chain elevator. Background Art

[0002] The conveying principle of the double-speed chain conveyor is to use the speed-increasing function of the double-speed chain to make the tooling plate supporting the goods on it run quickly and stop at the corresponding operating position through the blocker; or to complete the accumulation action and the functions of shifting, transferring, and changing lines through corresponding instructions.

[0003] China Utility Model Patent Publication No.: CN 208761596 U, discloses: a double-layer double-speed chain conveying system, which connects the first double-layer double-speed chain to the first elevator, connects the first elevator to one end of the elevator, connects the other end of the elevator to the second elevator, and connects the second elevator to the second double-layer double-speed chain, thereby achieving a double-layer conveying effect at the same time and improving the conveying efficiency. The first double-layer double-speed chain is used to transport the tooling board to the second double-layer double-speed chain, and the second double-layer double-speed chain is used to transport the empty board to the first double-layer double-speed chain, which can achieve double-layer circulation conveying of the tooling board and the empty board, and improve production efficiency. However, the double-layer double-speed chain conveying system does not design the internal structure of the elevator, and cannot show how the elevator is lifted and lowered. Moreover, the double-layer double-speed chain conveying system does not design a protective mechanism for the empty board, and the empty board is damaged by collision, which affects the work efficiency and has low practicality. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a double-layer double-speed chain elevator, which can effectively solve the problem that there is no protection mechanism designed for the conveying plate in the prior art.

[0005] The technical solution adopted by the utility model is: a double-layer double-speed chain elevator, comprising a first lifting mechanism, a frame is arranged on the outer side of the first lifting mechanism, an upper double-speed mechanism and a lower double-speed mechanism are fixedly installed on the top of the frame, an empty plate is arranged on the top of the frame, a buffer block is arranged on the outer side of the empty plate, and a second lifting mechanism is arranged on the side of the frame away from the first lifting mechanism.

[0006] Preferably, the first lifting mechanism and the second lifting mechanism have the same structure, the first lifting mechanism and the second lifting mechanism are symmetrically distributed about the center line of the frame, and the buffer block and the empty plate are in conflict with each other.

[0007] Through the above technical solution, through the design of the first lifting mechanism and the second lifting mechanism, the two are used synchronously to improve work efficiency. Through the design of the buffer block, a buffering effect is played on the empty plate to avoid collision of the empty plate, resulting in damage and affecting work efficiency.

[0008] Preferably, the first lifting mechanism comprises a frame, a cylinder, a fixed block, a connecting plate, a slide rail, a slider, a connecting block, a support plate 1, a connecting rod, a support plate 2, a motor 1, a reducer 1, a rotating shaft 1, a pulley 1, a rotating shaft 2, a pulley 2, a transmission belt 1 and a conveyor belt 1, the frame is fixedly installed with a cylinder inside, the movable end of the cylinder is fixedly installed with a fixed block, the outer side of the fixed block is fixedly installed with a connecting plate, the frame is fixedly installed with a slide rail inside, the connecting plate is fixedly installed with a connecting block on the side close to the slide rail, the outer side of the connecting block is fixedly installed with a slider, and the connecting plate is away from the movable end of the cylinder. A support plate 1 is fixedly installed on one side of the fixed block, a connecting rod is fixedly installed on the outer side of the sliding block, a support plate 2 is fixedly installed on the top of the support plate 1, a motor 1 is arranged on the top of the support plate 2, a reducer 1 is fixedly installed on the output end of the motor 1, a rotating shaft 1 is rotatably installed inside the reducer 1, a pulley 1 is fixedly installed on the outer side of the rotating shaft 1, a rotating shaft 2 is rotatably installed on the top of the support plate 2, a pulley 2 is fixedly installed on the outer side of the rotating shaft 2, a transmission belt 1 is arranged between the pulley 2 and the pulley 1, and a conveyor belt 1 is rotatably installed on the outer side of the rotating shaft 2.

[0009] Through the above technical scheme, the staff starts the cylinder, the movable end of the cylinder extends, so that the fixed block rises, thereby raising the support plate 2 on the top of the connecting plate. When it rises to the specified position, the motor 1 is started, and the output shaft of the motor 1 rotates to drive the rotating shaft 1 to rotate. The rotation of the rotating shaft 1 drives the pulley 1 to rotate, and drives the pulley 1 to drive the rotating shaft 2 to rotate through the transmission belt 1 and the pulley 2, so that the conveyor belt 1 rotates. Through the design of the cylinder, the support plate 2 can move up and down to achieve the lifting effect. Through the design of the transmission belt 1, the belt drive has a good shock-absorbing and vibration-reducing effect. The belt drive cost is lower, the service life is longer, and the maintenance and replacement costs are relatively low. Through the design of the motor 1, the conveyor belt 1 rotates, and the lifted objects can be transported to the top of the upper speed mechanism or the lower speed mechanism to achieve the transplanting effect.

[0010] Preferably, the slider is slidably connected to the slide rail, and two identical slide rails are provided, and the two slide rails are symmetrically distributed about the center line of the cylinder.

[0011] Through the above technical solution, through the design of the slider and the slide rail, the cylinder is more stable when working, the slider and the slide rail also play a certain limiting role, and the stability is further improved through the design of two sliders and the slide rail.

[0012] Preferably, the upper speed-multiplying mechanism includes motor 2, reducer 2, rotating shaft 3, pulley 3, rotating shaft 4, pulley 4, transmission belt 2, conveyor belt 2, support plate 3 and groove 1, reducer 2 is fixedly installed on the top of motor 2, rotating shaft 3 is rotatably installed inside the reducer 2, pulley 3 is fixedly installed on the outer side of the rotating shaft 3, support plate 3 is fixedly installed on the top of the frame, groove 1 is provided on the top of support plate 3, rotating shaft 4 is rotatably installed inside the groove 1, pulley 4 is fixedly installed on the outer side of the rotating shaft 4, and transmission belt 2 is arranged between pulley 3 and pulley 4.

[0013] Through the above technical solution, the staff starts motor two, the output shaft of motor two rotates to drive shaft three to rotate, the rotation of shaft three drives pulley three, pulley three drives shaft four to rotate through pulley four and transmission belt two, thereby rotating conveyor belt two, and through the design of motor two, conveyor belt two rotates to transport the empty plate on the top to the designated position, thereby achieving the conveying effect, and through the design of transmission belt two, the belt drive has good shock and vibration reduction effects, the belt drive cost is lower, the service life is longer, and the maintenance and replacement costs are relatively low.

[0014] Preferably, the lower speed-multiplying mechanism comprises a motor three, a reducer three, a rotating shaft five, a pulley five, a rotating shaft six, a pulley six, a transmission belt three, a conveyor belt three, a support plate four and a groove two, the reducer three is fixedly installed on the top of the motor three, a rotating shaft five is arranged inside the reducer three, a pulley five is fixedly installed on the outer side of the rotating shaft five, a support plate four is fixedly installed on the top of the frame, a groove two is opened on the top of the support plate four, a rotating shaft six is ​​rotatably installed inside the groove two, a pulley six is ​​fixedly installed on the outer side of the rotating shaft six, and a transmission belt three is arranged between the pulley five and the pulley six.

[0015] Through the above technical solution, the staff starts motor three, the output shaft of motor three rotates to drive shaft five to rotate, the rotation of shaft five drives pulley five, pulley five drives shaft six to rotate through shaft six and pulley six, thereby rotating conveyor belt three, and through the design of motor three, conveyor belt three rotates to transport the empty plate with objects on the top to the designated position, thereby achieving the conveying effect, and through the design of conveyor belt three, the belt drive has good shock and vibration reduction effects, the belt drive cost is lower, the service life is longer, and the maintenance and replacement costs are relatively low.

[0016] Preferably, the center lines of the lower-layer speed-doubling mechanism and the upper-layer speed-doubling mechanism are located on the same vertical line, the lower-layer speed-doubling mechanism and the upper-layer speed-doubling mechanism are arranged in parallel, and the transport directions of the lower-layer speed-doubling mechanism and the upper-layer speed-doubling mechanism are opposite.

[0017] Through the above technical scheme, through the design of the lower speed mechanism and the upper speed mechanism, the operation of the two will not interfere with each other, saving space, and the double-layer design allows double material transportation in the same space, thereby greatly saving the floor space of the factory or warehouse, and realizing double-layer circulation transportation to improve production efficiency.

[0018] Compared with the prior art, the utility model provides a double-layer double-speed chain hoist with the following features:

[0019] Beneficial effects:

[0020] 1. The double-layer double-speed chain hoist has good shock and vibration reduction effects through the design of pulley one, transmission belt two and transmission belt three. The belt drive has lower cost, longer service life, and relatively low maintenance and replacement costs. Through the design of the first lifting mechanism and the second lifting mechanism, the two are used synchronously to improve work efficiency. Through the design of the buffer block, the empty plate is buffered to avoid collision of the empty plate, resulting in damage and affecting work efficiency.

[0021] 2. The double-layer double-speed chain hoist is designed with the lower-layer double-speed mechanism and the upper-layer double-speed mechanism so that the two do not interfere with each other and save space. The double-layer design allows double material transportation in the same space, which greatly saves the floor space of the factory or warehouse, and can realize double-layer circulation transportation to improve production efficiency. The design of the slider and the slide rail makes the cylinder more stable when working. The slider and the slide rail also play a certain limiting role. The design of two sliders and slide rails further improves stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the first lifting mechanism of the utility model;

[0024] Figure 3 The first lifting mechanism installation structure of the utility model is shown in FIG. Figure 1 ;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the upper speed-multiplying mechanism and the lower speed-multiplying mechanism of the utility model;

[0026] Figure 5 This is a schematic diagram of the installation structure of the lower layer speed-multiplying mechanism of the utility model;

[0027] Figure 6 This is a schematic diagram of the installation structure of the upper speed-multiplying mechanism of the utility model;

[0028] Figure 7The first lifting mechanism installation structure of the utility model is shown in FIG. Figure 2 .

[0029] Among them: 1. First lifting mechanism; 2. Frame; 3. Upper speed mechanism; 4. Lower speed mechanism; 5. No-load plate; 6. Buffer block; 7. Second lifting mechanism; 101. Frame; 102. Cylinder; 103. Fixed block; 104. Connecting plate; 105. Slide rail; 106. Slider; 107. Connecting block; 108. Support plate 1; 109. Connecting rod; 110. Support plate 2; 111. Motor 1; 112. Reducer 1; 113. Shaft 1; 114. Pulley 1; 115. Shaft 2; 116. Pulley 2; 117 , transmission belt one; 118, conveyor belt one; 301, motor two; 302, reducer two; 303, shaft three; 304, pulley three; 305, shaft four; 306, pulley four; 307, transmission belt two; 308, conveyor belt two; 309, support plate three; 310, groove one; 401, motor three; 402, reducer three; 403, shaft five; 404, pulley five; 405, shaft six; 406, pulley six; 407, transmission belt three; 408, conveyor belt three; 409, support plate four; 410, groove two. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Embodiment 1: Figure 1-7 As shown, the utility model provides a double-layer double-speed chain elevator, including a first lifting mechanism 1, a frame 2 is arranged on the outside of the first lifting mechanism 1, an upper double-speed mechanism 3 and a lower double-speed mechanism 4 are fixedly installed on the top of the frame 2, an empty plate 5 is arranged on the top of the frame 2, a buffer block 6 is arranged on the outside of the empty plate 5, and a second lifting mechanism 7 is arranged on the side of the frame 2 away from the first lifting mechanism 1.

[0032] Specifically, the first lifting mechanism 1 and the second lifting mechanism 7 have the same structure. The first lifting mechanism 1 and the second lifting mechanism 7 are symmetrically distributed about the center line of the frame 2 , and the buffer block 6 and the empty plate 5 are in conflict with each other.

[0033] The advantage is that, through the design of the first lifting mechanism 1 and the second lifting mechanism 7, the two are used synchronously to improve work efficiency, and through the design of the buffer block 6, a buffering effect is played on the empty plate 5 to prevent the empty plate 5 from colliding, causing damage and affecting work efficiency.

[0034] Specifically, the first lifting mechanism 1 includes a frame 101, a cylinder 102, a fixed block 103, a connecting plate 104, a slide rail 105, a slider 106, a connecting block 107, a support plate 108, a connecting rod 109, a support plate 2 110, a motor 111, a reducer 112, a rotating shaft 113, a pulley 114, a rotating shaft 115, a pulley 116, a transmission belt 117 and a conveyor belt 118. The cylinder 102 is fixedly installed inside the frame 101, the fixed block 103 is fixedly installed on the movable end of the cylinder 102, the connecting plate 104 is fixedly installed on the outer side of the fixed block 103, the slide rail 105 is fixedly installed inside the frame 101, the connecting block 107 is fixedly installed on the side of the connecting plate 104 close to the slide rail 105, and the outer side of the connecting block 107 is fixedly installed A slider 106 is provided, a support plate 108 is fixedly installed on one side of the connecting plate 104 away from the fixed block 103, a connecting rod 109 is fixedly installed on the outer side of the slider 106, a support plate 110 is fixedly installed on the top of the support plate 108, a motor 111 is arranged on the top of the support plate 110, a reducer 112 is fixedly installed on the output end of the motor 111, a rotating shaft 113 is rotatably installed inside the reducer 112, a pulley 114 is fixedly installed on the outer side of the rotating shaft 113, a rotating shaft 115 is rotatably installed on the top of the support plate 110, a pulley 116 is fixedly installed on the outer side of the rotating shaft 115, a transmission belt 117 is arranged between the pulley 116 and the pulley 114, and a conveyor belt 118 is rotatably installed on the outer side of the rotating shaft 115. The advantage is that the staff starts the cylinder 102, and the movable end of the cylinder 102 extends to raise the fixed block 103, thereby raising the support plate 2 110 on the top of the connecting plate 104. When it rises to the specified position, the motor 111 is started, and the output shaft of the motor 111 rotates to drive the rotating shaft 113 to rotate, and the rotation of the rotating shaft 113 drives the pulley 114 to rotate. The movable pulley 114 drives the rotating shaft 2 115 to rotate through the transmission belt 117 and the pulley 2 116, thereby rotating the conveyor belt 118. Through the design of the cylinder 102, the support plate 2 110 can be moved up and down to achieve the lifting effect. Through the design of the transmission belt 117, the belt drive has a good shock-absorbing and vibration-reducing effect, the belt drive cost is lower, the service life is longer, and the maintenance and replacement costs are relatively low. Through the design of the motor 111, the conveyor belt 118 is rotated, and the lifted objects can be transported to the top of the upper speed mechanism 3 or the lower speed mechanism 4 to achieve the transplanting effect.

[0035] Specifically, the slider 106 is slidably connected to the slide rail 105, and two identical slide rails 105 are provided, and the two slide rails 105 are symmetrically distributed about the center line of the cylinder 102. The advantage is that the design of the slider 106 and the slide rail 105 makes the cylinder 102 more stable during operation, and the slider 106 and the slide rail 105 also play a certain limiting role. The design of the two sliders 106 and the slide rail 105 further improves the stability.

[0036] Embodiment 2: Figure 2-7 As shown, as an improvement to the previous embodiment.

[0037] Specifically, the upper speed-multiplying mechanism 3 includes a motor 2 301, a reducer 2 302, a rotating shaft 303, a pulley 3 304, a rotating shaft 4 305, a pulley 4 306, a transmission belt 2 307, a conveyor belt 2 308, a support plate 3 309 and a groove 1 310. The reducer 2 302 is fixedly installed on the top of the motor 2 301, the rotating shaft 3 303 is rotatably installed inside the reducer 2 302, the pulley 3 304 is fixedly installed on the outer side of the rotating shaft 303, the support plate 3 309 is fixedly installed on the top of the frame 2, the top of the support plate 309 is provided with a groove 1 310, the rotating shaft 4 305 is rotatably installed inside the groove 1 310, the pulley 4 306 is fixedly installed on the outer side of the rotating shaft 4 305, and a transmission belt 2 307 is arranged between the pulley 3 304 and the pulley 4 306. The advantage is that the staff starts the motor 2 301, the output shaft of the motor 2 301 rotates to drive the rotating shaft 303 to rotate, the rotating shaft 303 rotates to drive the pulley 3 304, the pulley 3 304 drives the rotating shaft 4 305 to rotate through the pulley 4 306 and the transmission belt 2 307, so that the conveyor belt 2 308 rotates, and through the design of the motor 2 301, the conveyor belt 2 308 rotates to transport the empty plate 5 on the top to the designated position, thereby achieving the conveying effect, and through the design of the transmission belt 2 307, the belt drive has a good shock-absorbing and vibration-reducing effect, the belt drive cost is lower, the service life is longer, and the maintenance and replacement costs are relatively low.

[0038] Specifically, the lower speed-multiplying mechanism 4 includes a motor 3 401, a reducer 3 402, a rotating shaft 5 403, a pulley 5 404, a rotating shaft 6 405, a pulley 6 406, a transmission belt 3 407, a conveyor belt 3 408, a support plate 4 409 and a groove 2 410. The reducer 3 402 is fixedly installed on the top of the motor 3 401, the rotating shaft 5 403 is arranged inside the reducer 3 402, the pulley 5 404 is fixedly installed on the outer side of the rotating shaft 5 403, the support plate 4 409 is fixedly installed on the top of the frame 2, the groove 2 410 is opened on the top of the support plate 409, the rotating shaft 6 405 is rotatably installed inside the groove 2 410, the pulley 6 406 is fixedly installed on the outer side of the rotating shaft 6 405, and a transmission belt 3 407 is arranged between the pulley 5 404 and the pulley 6 406. The advantage is that the staff starts the motor three 401, the output shaft of the motor three 401 rotates to drive the rotating shaft five 403 to rotate, the rotating shaft five 403 rotates to drive the pulley five 404, the pulley five 404 drives the rotating shaft six 405 to rotate through the rotating shaft six 405 and the pulley six 406, thereby rotating the conveyor belt three 408, and through the design of the motor three 401, the conveyor belt three 408 is rotated to transport the empty plate 5 loaded with objects on the top to the designated position, thereby achieving the conveying effect, and through the design of the conveyor belt three 408, the belt drive has a good shock absorbing and vibration reduction effect, the belt drive cost is lower, the service life is longer, and the maintenance and replacement costs are also relatively low.

[0039] Specifically, the center lines of the lower speed mechanism 4 and the upper speed mechanism 3 are located on the same vertical line, the lower speed mechanism 4 and the upper speed mechanism 3 are arranged in parallel, and the transportation directions of the lower speed mechanism 4 and the upper speed mechanism 3 are opposite. The advantage is that, through the design of the lower speed mechanism 4 and the upper speed mechanism 3, the operation of the two does not interfere with each other, saving space, and the double-layer design allows double material transportation in the same space, thereby greatly saving the floor space of the factory or warehouse, realizing double-layer circulation transportation, and improving production efficiency.

[0040] Working principle: When in use, the staff first turns on the power supply, and then starts the cylinder 102. The movable end of the cylinder 102 extends to raise the fixed block 103, thereby raising the support plate 110 on the top of the connecting plate 104. When it rises to the specified position, the motor 111 is started. The output shaft of the motor 111 rotates to drive the rotating shaft 113 to rotate. The rotation of the rotating shaft 113 drives the pulley 114 to rotate, and drives the pulley 114 to drive the rotating shaft 115 to rotate through the transmission belt 117 and the pulley 2 116, thereby rotating the conveyor belt 118. Through the design of the cylinder 102, the support plate 110 can move up and down to achieve the lifting effect. Through the design of the transmission belt 117, the belt drive has a good shock-absorbing and vibration-reducing effect. , belt transmission has lower cost, longer service life, and relatively low maintenance and replacement costs. Through the design of motor 111, conveyor belt 118 rotates, and the lifted objects can be transported to the top of the upper speed mechanism 3 or the lower speed mechanism 4 to achieve the transplanting effect. At the same time, the staff starts motor 2 301, and the output shaft of motor 2 301 rotates to drive shaft 3 303 to rotate, and shaft 303 rotates to drive pulley 3 304, and pulley 3 304 drives shaft 4 305 to rotate through pulley 4 306 and transmission belt 2 307, thereby rotating conveyor belt 2 308. Through the design of motor 2 301, conveyor belt 2 308 rotates to transport the top empty plate 5 to the designated position to achieve the conveying effect. The design of the transmission belt 2 307, the belt drive has a good shock and vibration reduction effect, the belt drive cost is lower, the service life is longer, the maintenance and replacement costs are relatively low, and then it is lowered through the second lifting mechanism 7. At the same time, the staff starts the motor 3 401, and the output shaft of the motor 3 401 rotates to drive the rotating shaft 5 403 to rotate. The rotation of the rotating shaft 5 403 drives the pulley 5 404. The pulley 5 404 drives the rotating shaft 6 405 to rotate through the rotating shaft 6 405 and the pulley 6 406, so that the conveyor belt 3 408 rotates. Through the design of the motor 3 401, the conveyor belt 3 408 rotates, and the top empty load plate 5 with objects is transported to the designated position to achieve the conveying effect. Through the design of the conveyor belt 3 408, the belt drive has a good The shock-absorbing and vibration-reducing effects, lower belt drive costs, longer service life, and relatively low maintenance and replacement costs. Through the design of the first lifting mechanism 1 and the second lifting mechanism 7, the two are used synchronously to improve work efficiency. Through the design of the slider 106 and the slide rail 105, the cylinder 102 is more stable during operation. The slider 106 and the slide rail 105 also play a certain limiting role. The design of the two sliders 106 and the slide rail 105 further improves the stability. Through the design of the lower speed mechanism 4 and the upper speed mechanism 3, the two do not interfere with each other, saving space. The double-layer design allows double material transportation in the same space, thereby greatly saving the floor space of the factory or warehouse, and can realize double-layer circulation transportation to improve production efficiency.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-layer double-speed chain hoist, comprising a first lifting mechanism (1), characterized in that: A frame (2) is arranged outside the first lifting mechanism (1); an upper speed mechanism (3) and a lower speed mechanism (4) are fixedly mounted on the top of the frame (2); an empty plate (5) is arranged on the top of the frame (2); a buffer block (6) is arranged on the outside of the empty plate (5); and a second lifting mechanism (7) is arranged on the side of the frame (2) away from the first lifting mechanism (1).

2. A double-layer double-speed chain hoist according to claim 1, characterized in that: The first lifting mechanism (1) and the second lifting mechanism (7) have the same structure; the first lifting mechanism (1) and the second lifting mechanism (7) are symmetrically distributed about the center line of the frame (2); and the buffer block (6) and the empty plate (5) are in conflict with each other.

3. A double-layer double-speed chain hoist according to claim 2, characterized in that: The first lifting mechanism (1) comprises a frame (101), a cylinder (102), a fixing block (103), a connecting plate (104), a slide rail (105), a slider (106), a connecting block (107), a supporting plate 1 (108), a connecting rod (109), a supporting plate 2 (110), a motor 1 (111), a reducer 1 (112), a rotating shaft 1 (113), a pulley 1 (114), a rotating shaft 2 (115), a pulley 2 (116), a transmission belt 1 (117), and a transmission belt 1 (118). ) and a conveyor belt (118), a cylinder (102) is fixedly installed inside the frame (101), a fixed block (103) is fixedly installed on the movable end of the cylinder (102), a connecting plate (104) is fixedly installed on the outer side of the fixing block (103), a slide rail (105) is fixedly installed inside the frame (101), a connecting block (107) is fixedly installed on the side of the connecting plate (104) close to the slide rail (105), and the outer side of the connecting block (107) is fixedly installed A slider (106) is installed, a support plate 1 (108) is fixedly installed on the side of the connecting plate (104) away from the fixed block (103), a connecting rod (109) is fixedly installed on the outer side of the slider (106), a support plate 2 (110) is fixedly installed on the top of the support plate 1 (108), a motor 1 (111) is arranged on the top of the support plate 2 (110), a reducer 1 (112) is fixedly installed on the output end of the motor 1 (111), and the reducer 1 (112) is fixedly installed on the output end of the reducer 1 (11 2) is rotatably mounted with a rotating shaft (113) inside, a pulley (114) is fixedly mounted on the outer side of the rotating shaft (113), a rotating shaft (115) is rotatably mounted on the top of the supporting plate (110), a pulley (116) is fixedly mounted on the outer side of the rotating shaft (115), a transmission belt (117) is arranged between the pulley (116) and the pulley (114), and a conveyor belt (118) is rotatably mounted on the outer side of the rotating shaft (115).

4. A double-layer double-speed chain hoist according to claim 3, characterized in that: The sliding block (106) is slidably connected to the sliding rail (105), and two identical sliding rails (105) are provided. The two sliding rails (105) are symmetrically distributed about the center line of the cylinder (102).

5. A double-layer double-speed chain hoist according to claim 4, characterized in that: The upper multiplying speed mechanism (3) comprises a second motor (301), a second reducer (302), a third rotating shaft (303), a third pulley (304), a fourth rotating shaft (305), a fourth pulley (306), a second transmission belt (307), a second conveyor belt (308), a third support plate (309) and a first groove (310). The second motor (301) is fixedly mounted with a second reducer (302) on the top, and the second reducer (302) is rotatably mounted with a third rotating shaft (303) inside. A pulley three (304) is fixedly installed on the outer side of the rotating shaft three (303), a support plate three (309) is fixedly installed on the top of the frame (2), a groove one (310) is opened on the top of the support plate three (309), a rotating shaft four (305) is rotatably installed inside the groove one (310), a pulley four (306) is fixedly installed on the outer side of the rotating shaft four (305), and a transmission belt two (307) is arranged between the pulley three (304) and the pulley four (306).

6. A double-layer double-speed chain hoist according to claim 5, characterized in that: The lower layer speed-multiplying mechanism (4) comprises a motor three (401), a reducer three (402), a rotating shaft five (403), a pulley five (404), a rotating shaft six (405), a pulley six (406), a transmission belt three (407), a conveyor belt three (408), a support plate four (409) and a groove two (410). The reducer three (402) is fixedly mounted on the top of the motor three (401), and the rotating shaft five (403) is arranged inside the reducer three (402). A pulley five (404) is fixedly installed on the outer side of (403), a support plate four (409) is fixedly installed on the top of the frame (2), a groove two (410) is opened on the top of the support plate four (409), a rotating shaft six (405) is rotatably installed inside the groove two (410), a pulley six (406) is fixedly installed on the outer side of the rotating shaft six (405), and a transmission belt three (407) is arranged between the pulley five (404) and the pulley six (406).

7. A double-layer double-speed chain hoist according to claim 6, characterized in that: The center lines of the lower speed mechanism (4) and the upper speed mechanism (3) are located on the same vertical line, the lower speed mechanism (4) and the upper speed mechanism (3) are arranged in parallel, and the transport directions of the lower speed mechanism (4) and the upper speed mechanism (3) are opposite.

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