A monorail crane

Abstract

The present invention discloses a monorail crane, belonging to the field of monorail cranes. A monorail crane comprises: a head that slides on a track, and also comprises: a plurality of main bearing rollers that are symmetrically fixedly arranged on the head, and the main bearing rollers slide on the track; a plurality of lifting mechanisms that are slidingly arranged on the track; a connecting mechanism that is arranged on the lifting mechanism, and one of the connecting mechanisms is arranged between the head and one of the lifting mechanisms; a driving mechanism that is arranged on the head; The present invention can achieve short-distance emergency braking, effectively preventing the crane from speeding too fast during braking, causing excessive friction between the brake pad and the track, causing the track to heat up, thereby effectively reducing the safety hazards caused by emergency braking.

Description

Technical Field

[0001] The present invention relates to the technical field of monorail cranes, in particular to a monorail crane. Background Art

[0002] As one of the key equipment of the auxiliary transportation system, coal mine monorail crane has the advantages of good transportation continuity, strong transportation capacity, and is not restricted by the bottom conditions of coal mine tunnels. It is widely used in underground mining working faces in coal mines. Mining monorail cranes mainly include explosion-proof diesel engine monorail cranes, explosion-proof battery monorail cranes, pneumatic monorail cranes, rope-traction monorail cranes and cable-towed monorail cranes.

[0003] At present, unexpected situations may occur during the operation of monorail cranes, such as collapse of the tunnel ahead, falling objects affecting driving, foreign objects on the track, etc. However, monorail cranes have a certain safe braking distance. If emergency braking causes the brake pads to clamp directly, the friction between the brake pads and the track will gradually increase during the clamping process. At this time, the brake pads and the track will slide relative to each other, generating a higher temperature, which may cause gas explosions in the tunnel. This poses certain safety hazards. Although there are mechanisms such as cameras to predict the safety of the driving direction in advance, temporary accidents are inevitable. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a monorail crane that can overcome the above problems or at least partially solve the above problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A monorail crane comprises: a locomotive that slides on a track, and also comprises: a plurality of main load-bearing rollers that are symmetrically fixedly arranged on the locomotive, and the main load-bearing rollers slide on the track; a plurality of lifting mechanisms that are slidably arranged on the track; a connecting mechanism that is arranged on the lifting mechanism, and one of the connecting mechanisms is arranged between the locomotive and one of the lifting mechanisms; a driving mechanism that is arranged on the locomotive; two buffer carriages that are fixedly connected to a plurality of first load-bearing rollers, a detection carriage that is fixedly connected to a plurality of second load-bearing rollers, and a brake carriage that is fixedly connected to a plurality of third load-bearing rollers, which are slidably arranged on the track, and the detection carriage is arranged between the two buffer carriages, one of which is arranged on one side of the locomotive, and the brake carriage is arranged on a side of the buffer carriage away from the locomotive. ; Retraction mechanisms are provided between the locomotive head and the buffer car, between the buffer car and the detection car, and between the buffer car and the brake car. The retraction mechanisms are connected to the buffer car, the detection car, the brake car and the locomotive head through a connecting unit. The retraction mechanism includes a hydraulic cylinder and a hydraulic rod sealed and sliding in the hydraulic cylinder. The connecting unit includes a rotating shaft and a connecting block; a controller is fixed on the locomotive head; a hydraulic control mechanism is arranged on the lower side of the locomotive head; a first oil pipe and a second oil pipe are arranged between the hydraulic cylinder and the hydraulic control mechanism, and the first oil pipe is arranged at one end of the hydraulic cylinder close to the hydraulic rod, and the second oil pipe is arranged at one end of the hydraulic cylinder away from the hydraulic rod; a second brake cylinder is symmetrically fixed on the brake car, and a second brake pad is fixedly connected to the output end of the second brake cylinder.

[0007] In order to facilitate the buffering of the vehicle front, preferably, a third oil pipe is fixedly connected between the end of the hydraulic cylinder away from the hydraulic rod and the hydraulic control mechanism, and solenoid valves are provided in the third oil pipe, the first oil pipe and the second oil pipe.

[0008] In order to facilitate the detection of the track, further, a first camera is symmetrically fixedly connected to the detection carriage, and the first camera faces the track.

[0009] In order to facilitate cooling of the tunnel, the buffer car is further provided with a pump, a storage box and a spray head, a liquid supply pipe is fixedly connected between the spray head and the drainage end of the pump, and a liquid extraction pipe is provided between the pump and the storage box.

[0010] In order to facilitate cooling of the track, further, the spray end of the spray head faces the track.

[0011] In order to facilitate accurate cooling of the rail, the first brake pad and the second brake pad, a micro motor is fixedly connected to the spray head, and the micro motor is fixedly connected to the spray adjustment rod of the spray head.

[0012] In order to improve the braking effect on the crane, further, a first brake cylinder is symmetrically fixedly connected to the vehicle head, and a first brake pad is fixedly connected to the output end of the first brake cylinder.

[0013] In order to prevent the buffering force from being too large, a flow control valve is further provided in the third oil pipe.

[0014] In order to facilitate the prediction of the bend and uphill conditions of the track, further, positioners are provided on the buffer car, the detection car and the brake car.

[0015] In order to facilitate the survey of unexpected situations in the traveling direction of the crane, further, a second camera is fixedly connected to the end of the brake car box.

[0016] Compared with the prior art, the present invention provides a monorail crane, which has the following beneficial effects:

[0017] 1. The monorail crane transmits the speed signal of the locomotive to the controller in real time through the speed detection unit in the locomotive. The controller controls multiple hydraulic rods to slide synchronously into the hydraulic cylinder through the hydraulic control mechanism, and slides at a certain speed to keep the brake car box and the track relatively still. Then the controller controls the second brake cylinder to extend quickly, so that the second brake pad is in close contact with the track to achieve static braking. Finally, the controller controls the hydraulic rod to stop sliding into the hydraulic cylinder through the hydraulic control mechanism, thereby achieving short-distance emergency braking, effectively preventing the crane from speeding too fast during braking, causing excessive friction between the brake pad and the track and causing it to heat up, thereby effectively reducing the safety hazards caused by emergency braking.

[0018] 2. The monorail crane controls the solenoid valves in the first oil pipe and the second oil pipe to close through the controller, and then controls the solenoid valve in the third oil pipe to open. At this time, the locomotive moves toward the brake box, causing the hydraulic rod to slide into the hydraulic cylinder. At this time, the hydraulic oil in the hydraulic cylinder flows back to the oil tank through the third oil pipe. The third oil pipe with a smaller diameter limits the flow of the hydraulic oil, thereby buffering the locomotive and slowing down the crane, thereby effectively reducing the impact force of the locomotive on the brake box, thereby effectively improving the emergency braking effect of the crane. When the speed detection unit in the locomotive detects that the speed of the locomotive reaches the safe braking speed, the controller controls the first brake cylinder to extend, so that the first brake pad fits the track to achieve emergency braking, thereby effectively improving the braking effect and braking efficiency of the crane.

[0019] 3. The monorail crane controls the pump to start through the controller. The pump draws water from the storage tank and supplies it to the spray head through the liquid supply pipe. At this time, the spray head sprays water mist to disperse it in the space where the crane travels, thereby effectively preventing the accumulation of heat generated by the contact and friction between the first brake pad and the track, and thus effectively preventing the emergency brake from heating up and causing a gas explosion.

[0020] The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. The present invention can realize short-distance emergency braking and effectively prevent the excessive friction between the brake pad and the track and cause the heating of the track due to the excessive speed of the crane during braking, thereby effectively reducing the safety hazards caused by emergency braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A structural schematic diagram of a monorail crane proposed by the present invention Figure 1 ;

[0022] Figure 2 A structural schematic diagram of a monorail crane proposed by the present invention Figure 2 ;

[0023] Figure 3 This is a schematic structural diagram of a brake car box in a monorail crane proposed by the present invention;

[0024] Figure 4 A schematic diagram of the structure of a buffer car in a monorail crane proposed by the present invention;

[0025] Figure 5 A schematic structural diagram of a locomotive head in a monorail crane proposed by the present invention;

[0026] Figure 6 A structural schematic diagram of a lifting mechanism in a monorail crane proposed by the present invention;

[0027] Figure 7 A schematic diagram of the structure of a buffer car, a detection car, a brake car and a locomotive in a monorail crane proposed by the present invention;

[0028] Figure 8 A cross-sectional schematic diagram of a hydraulic cylinder, a hydraulic rod and a third oil pipe in a monorail crane proposed by the present invention;

[0029] Fig. 9 A monorail crane proposed by the present invention Figure 8 A magnified schematic diagram of center A.

[0030] In the figure: 1. track; 101. headstock; 102. lifting mechanism; 103. main bearing roller; 104. driving mechanism; 105. first brake cylinder; 106. first brake pad; 107. connecting mechanism; 108. hydraulic control mechanism; 109. controller; 2. buffer carriage; 201. first bearing roller; 202. storage box; 203. pump; 204. liquid extraction pipe; 205. spray head; 206. liquid supply pipe; 207. micro motor; 3. Inspection carriage; 301. Second load-bearing roller; 302. First camera; 4. Braking carriage; 401. Third load-bearing roller; 402. Second brake cylinder; 403. Second brake pad; 404. Second camera; 405. Positioner; 5. Hydraulic cylinder; 501. Hydraulic rod; 502. First oil pipe; 503. Second oil pipe; 504. Third oil pipe; 505. Solenoid valve; 506. Flow control valve; 6. Rotating shaft; 601. Connecting block. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Example 1: Reference Figure 1-Figure 9A monorail crane comprises: a locomotive 101 sliding on a track 1, characterized in that it also comprises: a plurality of main load-bearing rollers 103, symmetrically fixedly arranged on the locomotive 101, and the main load-bearing rollers 103 slide on the track 1; a plurality of lifting mechanisms 102, slidingly arranged on the track 1; a connecting mechanism 107, arranged on the lifting mechanism 102, and one of the connecting mechanisms 107 is arranged between the locomotive 101 and one of the lifting mechanisms 102; a driving mechanism 104, arranged on the locomotive 101; two buffer carriages 2 fixedly connected with a plurality of first load-bearing rollers 201, a detection carriage 3 fixedly connected with a plurality of second load-bearing rollers 301, and a brake carriage 4 fixedly connected with a plurality of third load-bearing rollers 401, slidingly arranged on the track 1, and the detection carriage 3 is arranged between the two buffer carriages 2, one of the buffer carriages 2 is arranged on one side of the locomotive 101, and the brake carriage 4 is arranged on the buffer carriage 2 away from the locomotive 101. One side; a retracting mechanism is provided between the locomotive head 101 and the buffer car 2, between the buffer car 2 and the detection car 3, and between the buffer car 2 and the brake car 4. The retracting mechanism is connected to the buffer car 2, the detection car 3, the brake car 4 and the locomotive head 101 through a connecting unit. The retracting mechanism includes a hydraulic cylinder 5 and a hydraulic rod 501 that is sealed and slides in the hydraulic cylinder 5. The connecting unit includes a rotating shaft 6 and a connecting block 601; a controller 109 is fixed on the locomotive head 101; a hydraulic control mechanism 108 is arranged on the lower side of the locomotive head 101; a first oil pipe 502 and a second oil pipe 503 are arranged between the hydraulic cylinder 5 and the hydraulic control mechanism 108, and the first oil pipe 502 is arranged at one end of the hydraulic cylinder 5 close to the hydraulic rod 501, and the second oil pipe 503 is arranged at one end of the hydraulic cylinder 5 away from the hydraulic rod 501; the second brake cylinder 402 is symmetrically fixed on the brake car 4, and the output end of the second brake cylinder 402 is fixedly connected to the second brake pad 403.

[0033] The buffer carriage 2, the detection carriage 3 and the brake carriage 4 are all rotatably connected to the rotating shaft 6, and the hydraulic control mechanism 108 includes a hydraulic pump, an oil tank, an electric control panel and an electric control valve.

[0034] When the crane needs to stop in an emergency, the speed detection unit in the locomotive 101 transmits the speed signal of the locomotive 101 to the controller 109 in real time. The controller 109 controls the multiple hydraulic rods 501 to slide synchronously into the hydraulic cylinder 5 through the hydraulic control mechanism 108, and slides at a certain speed to keep the brake box 4 and the track 1 relatively still. Then the controller 109 controls the second brake cylinder 402 to extend quickly, so that the second brake pad 403 is in close contact with the track 1 to achieve static braking. Finally, the controller 109 controls the hydraulic rods 501 to stop sliding into the hydraulic cylinder 5 through the hydraulic control mechanism 108, thereby achieving short-distance emergency braking, effectively preventing the crane from speeding too fast during braking, causing the brake pad to rub against the track 1 excessively and causing it to heat up, thereby effectively reducing the safety hazards caused by emergency braking.

[0035] Example 2: Reference Figure 1 , Figure 3 , Figure 8 and Fig. 9 , a monorail crane, which is basically the same as Example 1, further, a third oil pipe 504 is fixedly connected between the end of the hydraulic cylinder 5 away from the hydraulic rod 501 and the hydraulic control mechanism 108, and an electromagnetic valve 505 is provided in the third oil pipe 504, the first oil pipe 502 and the second oil pipe 503.

[0036] A first brake cylinder 105 is symmetrically fixedly connected to the front of the vehicle 101 , and a first brake pad 106 is fixedly connected to the output end of the first brake cylinder 105 .

[0037] After the second brake plate 403 completes the emergency braking, the controller 109 controls the solenoid valve 505 in the first oil pipe 502 and the second oil pipe 503 to close, and then controls the solenoid valve 505 in the third oil pipe 504 to open. At this time, the locomotive 101 moves toward the brake box 4, causing the hydraulic rod 501 to slide into the hydraulic cylinder 5. At this time, the hydraulic oil in the hydraulic cylinder 5 flows back to the oil tank through the third oil pipe 504. The third oil pipe 504 with a smaller diameter limits the flow of the hydraulic oil, thereby buffering the locomotive 101 and slowing down the crane, thereby effectively reducing the impact force of the locomotive 101 on the brake box 4, thereby effectively improving the emergency braking effect of the crane.

[0038] When the speed detection unit in the locomotive 101 detects that the speed of the locomotive 101 reaches the safe braking speed, the controller 109 controls the first brake cylinder 105 to extend, so that the first brake pad 106 fits against the track 1 to achieve emergency braking, thereby effectively improving the braking effect and braking efficiency of the crane.

[0039] Example 3: Reference Figure 4 , Figure 7 and Figure 8, a monorail crane, is basically the same as Example 1, and further, a first camera 302 is symmetrically fixedly connected to the detection car 3, and the first camera 302 faces the track 1.

[0040] The track 1 is photographed in real time by the first camera 302, and the photographed information is transmitted to an external microcomputer. The deformation of the track 1 is analyzed by the analysis system in the microcomputer, so that the track 1 can be detected in real time, effectively preventing the track 1 from being damaged and causing accidents.

[0041] Example 4: Reference Figure 1 and Figure 4 A monorail crane is basically the same as Example 1, and further, a pump 203, a storage box 202 and a spray head 205 are provided on the buffer car 2, a liquid supply pipe 206 is fixedly connected between the spray head 205 and the drainage end of the pump 203, and a liquid extraction pipe 204 is provided between the pump 203 and the storage box 202.

[0042] The spray end of the spray head 205 faces the track 1 .

[0043] A micro motor 207 is fixedly connected to the spray head 205 , and the micro motor 207 is fixedly connected to a spray adjustment rod of the spray head 205 .

[0044] When the second brake cylinder 402 is fully extended to make the second brake pad 403 close to the track 1, the controller 109 controls the pump 203 to start, and the pump 203 draws water from the storage tank 202 and supplies it to the spray head 205 through the liquid supply pipe 206. At this time, the spray head 205 sprays water mist to disperse it in the space where the crane is traveling, thereby effectively preventing the accumulation of heat generated by the contact and friction between the first brake pad 106 and the track 1, and further effectively preventing the emergency brake from heating up and causing a gas explosion.

[0045] When the first brake cylinder 105 begins to extend, the controller 109 controls the micromotor 207 to drive the spray adjustment rod to rotate, so that the spray of the spray head 205 becomes smaller. At this time, a large amount of water is sprayed onto the track 1, thereby effectively cooling the track 1 quickly and preventing the first brake pad 106 from rubbing against the track 1 and heating up quickly.

[0046] The spray head 205 close to the brake box 4 cools down the second brake pad 403 in real time, thereby effectively preventing the second brake pad 403 from moving and heating up due to impact, thereby effectively reducing the safety hazard of emergency braking of the crane.

[0047] Example 5: Reference Figure 8 and Fig. 9 , a monorail crane, is basically the same as Example 1, and further, a flow control valve 506 is provided in the third oil pipe 504.

[0048] When the solenoid valve 505 in the third oil pipe 504 is opened, the controller 109 controls the flow control valve 506 to adjust the flow rate of the hydraulic oil in the third oil pipe 504 to gradually reduce it, thereby gradually buffering the front of the vehicle 101, effectively preventing the initial buffering force from being too large and causing severe shaking, thereby effectively improving the buffering effect on the crane.

[0049] Example 6: Reference Figure 3 , Figure 4 and Figure 5 , a monorail crane, which is basically the same as Example 1, and further, a positioner 405 is provided on the buffer car 2, the detection car 3 and the brake car 4.

[0050] A second camera 404 is fixedly connected to the end of the brake carriage 4 .

[0051] The second camera 404 captures the front information in real time, and transmits the video signal to an external microcomputer in real time. The microcomputer analyzes and surveys the road conditions ahead for emergency braking. The position information is transmitted to the external microcomputer in real time through multiple locators 405, and the position information of the buffer car 2, the detection car 3 and the brake car 4 is calculated. When turning, it can be judged in time whether there is a turn ahead or an uphill slope ahead, and the driving mechanism 104 in the front of the car 101 can be controlled to achieve uniform speed turning and climbing.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A monorail crane, comprising: The vehicle head (101) sliding on the track (1) is characterized by further comprising: A plurality of main bearing rollers (103) are symmetrically fixedly arranged on the vehicle head (101), and the main bearing rollers (103) slide on the track (1); A plurality of lifting mechanisms (102) slidably arranged on the track (1); A connecting mechanism (107) is arranged on the lifting mechanism (102), and one of the connecting mechanisms (107) is arranged between the vehicle head (101) and one of the lifting mechanisms (102); A driving mechanism (104) is arranged on the vehicle head (101); Two buffer carriages (2) fixedly connected to a plurality of first load-bearing rollers (201), a detection carriage (3) fixedly connected to a plurality of second load-bearing rollers (301), and a brake carriage (4) fixedly connected to a plurality of third load-bearing rollers (401) are all slidably arranged on the track (1), and the detection carriage (3) is arranged between the two buffer carriages (2), the two buffer carriages (2), the detection carriage (3), and the brake carriage (4) are all arranged on one side of the vehicle head (101), and the brake carriage (4) is arranged on the side of the buffer carriage (2) away from the vehicle head (101); A retracting mechanism is provided between the locomotive head (101) and the buffer carriage (2), between the buffer carriage (2) and the detection carriage (3), and between the buffer carriage (2) and the brake carriage (4); the retracting mechanism is connected to the buffer carriage (2), the detection carriage (3), the brake carriage (4), and the locomotive head (101) via a connecting unit; the retracting mechanism comprises a hydraulic cylinder (5) and a hydraulic rod (501) sealingly sliding in the hydraulic cylinder (5); and the connecting unit comprises a rotating shaft (6) and a connecting block (601); A controller (109) fixed on the vehicle head (101); A hydraulic control mechanism (108) is arranged on the lower side of the vehicle head (101); A first oil pipe (502) and a second oil pipe (503) are arranged between the hydraulic cylinder (5) and the hydraulic control mechanism (108), wherein the first oil pipe (502) is arranged at one end of the hydraulic cylinder (5) close to the hydraulic rod (501), and the second oil pipe (503) is arranged at one end of the hydraulic cylinder (5) away from the hydraulic rod (501); A second brake cylinder (402) is symmetrically fixed on the brake carriage (4), and an output end of the second brake cylinder (402) is fixedly connected to a second brake pad (403); When the crane needs to stop running urgently, the speed detection unit in the head (101) transmits the speed signal of the head (101) to the controller (109) in real time. The controller (109) controls the multiple hydraulic rods (501) to slide synchronously into the hydraulic cylinder (5) and slide at a certain speed through the hydraulic control mechanism (108), so that the brake carriage (4) and the track (1) remain relatively still. Then, the controller (109) controls the second brake cylinder (402) to extend rapidly, so that the second brake pad (403) is in close contact with the track (1) to achieve static braking. Finally, the controller (109) controls the hydraulic rods (501) to stop sliding into the hydraulic cylinder (5) through the hydraulic control mechanism (108), so as to achieve short-distance emergency braking.

2. A monorail crane according to claim 1, characterized in that: A third oil pipe (504) is fixedly connected between one end of the hydraulic cylinder (5) away from the hydraulic rod (501) and the hydraulic control mechanism (108), and solenoid valves (505) are provided in the third oil pipe (504), the first oil pipe (502) and the second oil pipe (503).

3. A monorail crane according to claim 1, characterized in that: A first camera (302) is symmetrically fixedly connected to the detection carriage (3), and the first camera (302) faces the track (1).

4. A monorail crane according to claim 1, characterized in that: The buffer carriage (2) is provided with a pump (203), a storage box (202) and a spray head (205); a liquid supply pipe (206) is fixedly connected between the spray head (205) and the drainage end of the pump (203); and a liquid extraction pipe (204) is provided between the pump (203) and the storage box (202).

5. A monorail crane according to claim 4, characterized in that: The spray end of the spray head (205) faces the track (1).

6. A monorail crane according to claim 4, characterized in that: The spray head (205) is fixedly connected to a micro motor (207), and the micro motor (207) is fixedly connected to a spray adjustment rod of the spray head (205).

7. A monorail crane according to claim 1, characterized in that: A first brake cylinder (105) is symmetrically fixedly connected to the vehicle head (101), and a first brake pad (106) is fixedly connected to the output end of the first brake cylinder (105).

8. A monorail crane according to claim 2, characterized in that: A flow control valve (506) is provided in the third oil pipe (504).

9. The monorail crane according to claim 1, characterized in that: The buffer carriage (2), the detection carriage (3) and the brake carriage (4) are all provided with positioners (405).

10. The monorail crane according to claim 1, characterized in that: A second camera (404) is fixedly connected to the end of the brake carriage (4).

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