CN111301254B - Underground coal mine trackless transport vehicle cargo compartment unloading height adjusting device - Google Patents
Underground coal mine trackless transport vehicle cargo compartment unloading height adjusting device Download PDFInfo
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- CN111301254B CN111301254B CN202010132045.XA CN202010132045A CN111301254B CN 111301254 B CN111301254 B CN 111301254B CN 202010132045 A CN202010132045 A CN 202010132045A CN 111301254 B CN111301254 B CN 111301254B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
- B60P1/28—Tipping body constructions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
- B60P1/30—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element in combination with another movement of the element
- B60P1/34—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element in combination with another movement of the element the other movement being raising or lowering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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Abstract
The invention discloses a device for adjusting the unloading height of a coal mine underground trackless transport vehicle cargo compartment, which is suitable for limiting and adjusting the unloading height of the coal mine trackless transport vehicle cargo compartment. The device finishes data acquisition by a distance sensor, determines whether to limit and limit the height, finishes the action of a limit pin shaft through memory alloy, and finishes the limit of a cargo compartment through a mechanical limit device. The mechanical limiting device is driven by magnetic control memory alloy, and meanwhile, the reliability of limiting of the limiting pin shaft is improved by utilizing the dead point principle of the four-bar mechanism. The cargo compartment can better adapt to different working conditions, and after the height adjusting device is added, the cargo compartment of the transport vehicle can better adapt to different unloading heights, so that the adaptability of the trackless rubber-tyred transport vehicle in the underground coal mine is improved.
Description
Technical Field
The invention relates to the technical field of vehicle safety, in particular to a cargo compartment unloading height adjusting device of a trackless transport vehicle for underground coal mines.
Background
The explosion-proof trackless rubber-tyred dump truck plays an important role in coal mine auxiliary transportation. In recent years, along with the mining of thin coal seams and ultrathin coal seams, higher requirements are put on the adaptability of the explosion-proof dump truck. If the single unloading height dump truck is only suitable for the height of a coal mine roadway, the unloading process is limited due to the lifting angle of the cargo compartment, and the complete unloading is usually completed by manual assistance, so that the unloading efficiency of the dump truck on the ground of the coal mine is seriously influenced. If the self-discharging height is high, the accident of touching is easy to happen when the self-discharging operation is carried out underground, and the production safety is seriously influenced. Therefore, the development of the dumper cargo compartment capable of automatically switching the unloading height is necessary, the adaptability of the explosion-proof trackless rubber-tyred dumper is greatly improved, and the production efficiency of a coal mine is improved.
Disclosure of Invention
The invention aims to avoid the defects of the prior art and provides a device for adjusting the unloading height of a cargo compartment of a trackless transport vehicle for a coal mine underground.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a colliery is in pit with trackless haulage vehicle goods railway carriage or compartment uninstallation height adjusting device includes: the device comprises a distance sensor, a control center and a limiting actuating mechanism; the distance sensor is arranged at the front end of the top of the cargo compartment and connected to the control center, the control center is connected with the limiting execution mechanism, and the limiting execution mechanism is controlled to limit the unloading height of the cargo compartment of the transport vehicle according to the distance information between the distance sensor and the top of the roadway; wherein, spacing actuating mechanism includes:
the device comprises a first magnetic control memory alloy spring, a four-bar mechanism, a second magnetic control memory alloy spring, a limiting pin and a limiting plate; the four-bar mechanism comprises an actuating rod, a transmission rod and operating ends, one end of each of two operating rods of the four-bar mechanism is hinged to one end of the transmission rod, the other end of each of the two operating rods of the four-bar mechanism is connected with a first magnetic control memory alloy spring and a second magnetic control memory alloy spring respectively, the other end of each of the transmission rods is connected with one end of the actuating rod, and the other end of each of the actuating rods is connected with a limiting pin so as to control the actuating rod to move; the limiting plate is provided with a plurality of limiting edges, and the limiting pins are contacted with different limiting edges on the limiting plate by controlling the positions of the limiting pins, so that the adjustment and limitation of the unloading height of the cargo compartment of the transport vehicle are realized.
The limiting edges arranged on the limiting plate are step-shaped, and the limiting edges of the step shapes are arranged in an arc formed on the surface of the limiting plate.
Wherein, the number of the step-shaped limiting edges is set to be 5.
Wherein, the first magnetic control memory alloy spring (prepared by a two-way memory alloy and including two deformation forms).
The second magnetic control memory alloy spring comprises two magnetic control memory alloy springs, one magnetic control memory alloy spring is prepared from a two-way memory alloy and comprises two deformation forms; the other is the preparation of the whole-course memory alloy, which comprises three deformation forms.
The invention has the beneficial effects that: the automatic switching of the unloading heights of the cargo compartments of the transport vehicle under different working conditions of the same mine is realized by matching the limiting plate, so that the working efficiency is improved, the labor intensity is reduced, and the safety is ensured; the cooperation of the limiting pin and the limiting plate is controlled by the cooperation of the magnetic control memory alloy and the four-bar mechanism, the four-bar mechanism is used for locking the limiting pin by utilizing a dead point principle, and the device has the advantages of short execution time, quick action, high precision and sensitive response; meanwhile, the selection of the limit height is realized through the matching of the two magnetic control memory alloys and the four-bar mechanism, and the magnetic control memory alloy spacing mechanism is suitable for working conditions of different mine roadway heights.
Drawings
Fig. 1 is a schematic structural diagram of a cargo compartment unloading height adjusting device of a transport vehicle provided by the invention.
Fig. 2 is a schematic structural diagram of a limiting plate in the cargo compartment unloading height adjusting device of the transport vehicle provided by the invention.
Fig. 3 is a schematic structural diagram of a limit actuating mechanism in the cargo compartment unloading height adjusting device of the transport vehicle provided by the invention.
Fig. 4 is a schematic cross-sectional view of a limiting plate in the cargo box unloading height adjusting device of the transport vehicle provided by the invention.
Detailed Description
The technical solution of the present invention will be further described in more detail with reference to the following embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a cargo compartment unloading height adjusting device of a trackless transport vehicle for a coal mine underground provided by the invention. The device includes: the device comprises a distance sensor 1, a control center 2 and a limit actuating mechanism 3; the distance sensor 1 is arranged at the front end of the top of the cargo compartment and connected to the control center 2, the control center 2 is connected with the limiting execution mechanism 3, and the limiting execution mechanism 3 is controlled to limit the unloading height of the cargo compartment of the transport vehicle according to the distance information between the distance sensor 1 and the top of the roadway; the limiting executing mechanism 3 comprises a first magnetic control memory alloy spring 31, a four-bar mechanism 32, a second magnetic control memory alloy spring 33, a limiting pin 34 and a limiting plate 35; the four-bar mechanism 32 comprises an actuating rod, a transmission rod and operating ends, one end of each of the two operating rods of the four-bar mechanism 32 is hinged to one end of the transmission rod, the other end of each of the two operating rods is connected with the first magnetic control memory alloy spring 31 and the second magnetic control memory alloy spring 33 respectively, the other end of each of the transmission rods is connected with one end of the actuating rod, and the other end of each of the actuating rods is connected with a limiting pin 34 to control the movement of the actuating rod; the limiting plate 35 is provided with a plurality of limiting edges, and the limiting pins 34 are contacted with different limiting edges on the limiting plate 35 by controlling the positions of the limiting pins, so that the adjustment and limitation of the unloading height of the cargo compartment of the transport vehicle are achieved.
The limiting edges arranged on the limiting plate 35 are step-shaped, and each step-shaped limiting edge is arranged in an arc arranged on the surface of the limiting plate 35.
Wherein, the number of the step-shaped limiting edges is set to be 5.
The first magnetic control memory alloy spring is prepared from a two-way memory alloy and comprises two deformation forms.
The second magnetic control memory alloy spring comprises two magnetic control memory alloy springs, one magnetic control memory alloy spring is prepared from a two-way memory alloy and comprises two deformation forms; the other is the preparation of the whole-course memory alloy, which comprises three deformation forms.
The distance sensor 1 is arranged at the front end of the top of the cargo compartment of the transport vehicle, and when the cargo compartment of the transport vehicle is unloaded and overturned, the position of the distance sensor 1 is the highest position of the overturned cargo compartment away from the ground of a roadway; when the top of the cargo compartment at the position of the distance sensor 1 is in contact with the roadway roof, the cargo compartment can be damaged, the roof fall can be caused more seriously, and more serious casualty accidents are caused. In order to avoid the phenomenon, a distance sensor 1 is arranged at the top of the cargo compartment, the distance from the top of the roadway is sensed in real time through the distance sensor 1, and distance information is sent to a control center 2. The control center 2 is used for receiving the distance information of the distance sensor 1, comparing the distance information with a preset distance threshold value, and sending a control signal to the limit executing mechanism 3 when a distance value contained in the distance information reaches the preset distance threshold value so as to control the limit executing mechanism 3 to limit the unloading height of the transport vehicle cargo compartment.
Specifically, the limit executing mechanism 3 includes a first magnetically controlled memory alloy spring 31, a four-bar linkage 32, a second magnetically controlled memory alloy spring 33, a limit pin 34, and a limit plate 35. The surface of the limiting plate 35 is provided with a crescent arc groove, and a step-shaped limiting edge extending from the plane where the crescent arc groove is located to the other surface of the limiting plate 35 is arranged in the crescent arc groove. Each limiting edge has the same width, and the sum of the total widths is less than or equal to the thickness of the limiting plate 35. The structure of the stopper plate 35 is shown in fig. 2. The first magnetic control memory alloy spring 31, the four-bar linkage 32, the second magnetic control memory alloy spring 33 and the limit pin 34 of the limit actuating mechanism 3 are arranged in a box body, a through hole for enabling the limit pin 34 to penetrate is formed in the box body, and the limit pin 34 is in a cuboid or cylinder shape. The limiting plate 35 is vertically fixed at the bottom of the bottom surface of the cargo compartment of the transport vehicle. The component structure of the limit actuator 3 arranged in the box body is shown in fig. 3. The four-bar linkage 32 comprises two operating rods, a transmission rod and an actuating rod; one ends of the two operating rods are respectively connected with the first magnetic control memory alloy spring 31 and the second magnetic control memory alloy spring 33, the other ends of the two operating rods are hinged to one end of the transmission rod, the other end of the transmission rod is hinged to one end of the operating rod, and the other end of the operating rod is fixedly connected with the limiting pin 34. The groove of the limiting edge on the limiting plate 35 is crescent arc-shaped, so the limiting pin 34 is cylindrical. The arrangement of the four-bar linkage 32 can be set according to practical situations, and one arrangement of the four-bar linkage 32 is shown in fig. 3.
The magnetic control memory alloy is a novel multifunctional material, and the basic characteristics of the magnetic control memory alloy are recognized to have a memory effect on the shape. After the memory alloy is shaped at high temperature, the memory alloy is deformed at low temperature, and when the temperature is heated to be higher than a certain temperature again, the memory alloy can restore the original shape like memory. The two-way memory alloy has two deformation forms, and the whole-way memory alloy has three deformation forms. Two and three length position states can be obtained by manufacturing the memory alloy spring, and the first magnetic control memory alloy spring 31 and the second magnetic control memory alloy spring 33 in the figure 3 are both made of magnetic control memory alloy.
The first magnetic control memory alloy spring 31 is deformed due to the heating device or the cooling device, so that the operation rod connected with the first magnetic control memory alloy spring moves, and the movement of the operation rod causes the movement of the execution rod in the four-bar mechanism 32, so as to drive the limit pin 34 to move. Similarly, the second magnetic control memory alloy spring 33 deforms and drives the stopper pin 34 to move.
In the working process, the distance between the top of the cargo compartment and the top of the roadway is sensed by the distance sensor 1 and transmitted to the control center 2, and the control center 2 calculates the unloading height of the cargo compartment during unloading by combining the height information of the cargo compartment and receiving the distance information transmitted by the distance sensor 1, namely the lifting height of the cargo compartment is smaller than the distance length contained in the distance information transmitted by the distance sensor 1.
The distance sensor 1 is used for acquiring a distance signal between the top of the cargo compartment and the top plate, when the distance is smaller than a set value, the control center 2 is used for controlling the limiting actuating mechanism 3 to act, the limiting actuating mechanism 3 is combined with a given signal to selectively open the first magnetic control memory alloy spring 31 and/or the second magnetic control memory alloy spring 33, and the limiting and the canceling of the limiting pin are realized through the deformation of the memory alloy and the four-bar mechanism.
The specific operation is as follows: the unloading height of the cargo compartment of the trackless transport vehicle for underground coal mines is 2.2m, the lowest height after height limitation by the limiting execution mechanism is 1.6m, and the height below 1.6m is not limited. By setting the height difference between the upper limiting edges of the limiting plate 35 and controlling the extending position of the limiting pin 34 at the same time, the spacing between adjacent limiting positions is 0.1m, and whether the limiting is controlled by the magnetic control memory alloy spring or not is realized. The position limit of the limit pin 34 is realized by adjusting the length state of the first magnetic control memory alloy spring 31 and/or the second magnetic control memory alloy spring 33. Since the lengths of the first and second magnetic memory alloy springs 31 and 33 change with temperature, in the present invention, the first and second magnetic memory alloy springs 31 and 33 are provided with a device for heating or cooling the alloy springs, respectively. The device for heating or cooling the alloy spring is connected with the control center 2, and heats or cools the memory alloy spring according to the signal sent by the control center 2, so as to change the length of the memory alloy spring. In the present invention, the control center 2 sends an instruction to the heating or cooling device of the second magnetically controlled memory alloy spring 33 to make the length thereof change five positions with the temperature, and the control center 2 sends an instruction to the heating or cooling device of the magnetically controlled first magnetically controlled memory alloy spring 31 to make the length thereof change two positions with the temperature. By connecting the first magnetic control memory alloy spring 31 to one end of one operating rod of the four-bar linkage 32, and connecting the other end of the operating rod to one end of a connecting rod of the four-bar linkage 32, as shown in fig. 3, the spring of the first magnetic control memory alloy spring 31 is arranged along the vertical direction, the generated deformation change direction is also in the vertical direction, the spring is deformed by heating, after the length is lengthened, a downward force is generated to the operating rod connected with the spring, and the force is applied to the hinged intersection point between the connecting rod of the four-bar linkage 32 and the operating rod connected with the second magnetic control memory alloy spring 33, so that the angle between the connecting rod of the four-bar linkage 32 and the operating rod connected with the second magnetic control memory alloy spring 33 can be changed into a horizontal state of 180 degrees. At this time, the control center 2 sends a control signal to the second magnetron memory alloy spring 33 to deform one or both of the two springs of the second magnetron memory alloy spring 33, and as shown in fig. 3, when the springs of the second magnetron memory alloy spring 33 are deformed, a force is applied to the operation lever connected to the second magnetron memory alloy spring 33, and the operation lever and the connection lever are in a horizontal state, and the force is transmitted to the execution lever connected to the connection lever, and in fig. 3, the execution lever is limited in one horizontal channel, and the connection lever and the operation lever connected to the second magnetron memory alloy spring 33 are in the same horizontal line as the operation lever while being in a horizontal state due to the force generated by the deformation of the first magnetron memory alloy spring 31. In fig. 3, the second magnetic control memory alloy spring 33 can generate 5 kinds of deformation due to heating, and drives the limit pin 34 connected with the actuating rod to extend to 5 different positions to the left side in fig. 3.
Each position change of the limiting pin 34 is matched with the 5 limiting edges of the limiting plate 35 respectively, and five different unloading height position limits for unloading the cargo compartment are realized. As shown in fig. 1, the limiting plate 35 is vertically fixed at the bottom of the cargo compartment, and the groove of the limiting plate 35 faces the limiting pin 34, and the limiting pin 34 moves in a direction perpendicular to the groove of the limiting plate 35 under the control of the four-bar linkage 32.
The limiting edge arranged on the limiting plate 35 is stepped downwards from the surface of the limiting plate 35 with the groove, and the sectional schematic view is shown in fig. 4 and is represented as steps T1-T5, wherein T5 is the lowest and T1 is the highest. The limit height is limited within the range of 1.6m-2.2 m.
When the position is limited by 1.6m to 1.7m, the distance between the top of the cargo compartment and the top of the roadway does not allow the cargo compartment to be overturned and unloaded, the control center 2 sends an instruction to the limiting actuating mechanism 3, specifically sends an instruction to the first magnetic control memory alloy spring 31 to deform the first magnetic control memory alloy spring, pushes the operating rod and the connecting rod connected with the second magnetic control memory alloy spring 33 to be horizontal, sends an instruction to the second magnetic control memory alloy spring 33 at the same time, controls the heating devices of the two springs to heat at the same time, enables the two springs of the second magnetic control memory alloy spring 33 to be heated to deform at the maximum, enables the limiting pin 34 in the graph 3 to move to the farthest position leftwards, and contacts with the lowest limiting edge T5 in the groove of the limiting plate 35 to limit the cargo compartment; when the limit is 1.7-1.8m, the two springs of the second magnetic control memory alloy spring 33 are heated to deform, so that the whole memory alloy spring generates 3 deformations, and meanwhile, the two-way memory alloy spring generates one deformation; or the whole-process memory alloy spring and the two-process memory alloy spring are deformed; when the limit is 1.8m-1.9m, the two springs of the second magnetic control memory alloy spring 33 are heated to deform, so that the whole memory alloy spring generates 3 deformations, and meanwhile, the two-way memory alloy spring generates one deformation; or the whole-process memory alloy spring and the two-process memory alloy spring are deformed, so that the limiting pin 34 moves to a position along the T4 to be in contact with the T4 for limiting; when the position is limited by 1.9m to 2.0m, the two springs of the second magnetic control memory alloy spring 33 are heated to deform, so that the whole-course memory alloy spring generates 3 deformations, or one of the whole-course memory alloy spring and the two-course memory alloy spring generates two deformations, and the other one generates one deformation, so that the limiting pin 34 moves to the position along the T3 to be contacted with the T3 for limiting; when the position is limited by 2.0m to 2.1m, the two springs of the second magnetic control memory alloy spring 33 are heated to deform, so that the whole-course memory alloy spring or the two-way memory alloy spring generates 2 deformations, or the whole-course memory alloy spring and the two-way memory alloy spring generate one deformation, and the limiting pin 34 moves to the position along the T2 to be contacted with the T2 for limiting; when the position is limited by 2.1m-2.2m, the two springs of the second magnetic control memory alloy spring 33 are heated to deform, so that one of the whole-course memory alloy spring or the two-course memory alloy spring deforms by 1, and the limit pin 34 moves to the position along the T1 to be contacted with the T1 for limiting.
After the limiting operation is completed, the control center 2 sends a recovery instruction to the limiting execution mechanism 3, specifically, sends an instruction to the cooling device of the first magnetic control memory alloy spring 31, and controls the cooling to deform the first magnetic control memory alloy spring 31, so that the length of the first magnetic control memory alloy spring is shortened, the operating rod connected with the first magnetic control memory alloy spring is driven to move upwards, and the limiting pin 34 is pulled back from the horizontal channel to complete the limiting operation.
The invention has the beneficial effects that: the automatic switching of the unloading height of the trackless transport vehicle carriage for the underground coal mine under different working conditions of the same mine is realized by arranging the distance sensor and the control center, sensing the height of the tunnel and the real-time distance between the distance sensor and the top of the tunnel, adjusting the limit pin of the limit implementing mechanism to move to different positions, and matching with the limit plate, so that the working efficiency is improved, the labor intensity is reduced, and the safety is ensured; the cooperation of the limiting pin and the limiting plate is controlled by the cooperation of a temperature control memory alloy spring and a four-bar mechanism, and the four-bar mechanism is used for realizing short execution time, quick action, high precision and sensitive response to the locking of the limiting pin by utilizing a dead point principle; meanwhile, the selection of the limit height is realized through the matching of the two magnetic control memory alloys and the four-bar mechanism, and the magnetic control memory alloy spacing mechanism is suitable for working conditions of different mine roadway heights.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. The utility model provides a colliery is high adjusting device of trackless haulage vehicle goods railway carriage or compartment uninstallation in pit which characterized in that includes: the device comprises a distance sensor (1), a control center (2) and a limit actuating mechanism (3); the distance sensor (1) is arranged at the front end of the top of the cargo compartment and connected to the control center (2), the control center (2) is connected with the limiting execution mechanism (3), and the limiting execution mechanism (3) is controlled to limit the unloading height of the cargo compartment of the transport vehicle according to the distance information between the distance sensor (1) and a roadway roof or a top obstacle; wherein, spacing actuating mechanism (3) includes:
the device comprises a first magnetic control memory alloy spring (31), a four-bar mechanism (32), a second magnetic control memory alloy spring (33), a limit pin (34) and a limit plate (35); the four-bar mechanism (32) comprises an actuating rod, a transmission rod and operating ends, one end of each of two operating rods of the four-bar mechanism (32) is hinged to one end of the transmission rod, the other end of each of the two operating rods is connected with a first magnetic control memory alloy spring (31) and a second magnetic control memory alloy spring (33) respectively, the other end of each of the two operating rods is connected with one end of the actuating rod, and the other end of each of the two operating rods is connected with a limiting pin (34) to control the movement of the actuating rod; the limiting plate (35) is provided with a plurality of limiting edges, and the limiting pins (34) are contacted with different limiting edges on the limiting plate (35) by controlling the positions of the limiting pins to achieve the adjustment and limitation of the unloading height of the cargo compartment of the transport vehicle;
each position change of the limiting pin (34) is matched with 5 limiting edges of the limiting plate (35) respectively, so that five different unloading height position limits for unloading the cargo compartment are realized; the limiting plate (35) is vertically fixed at the bottom of the cargo compartment, the groove in the limiting plate (35) is over against the limiting pin (34), and the limiting pin (34) moves along the direction vertical to the groove in the limiting plate (35) under the control of the four-bar linkage mechanism (32); the limiting edge arranged on the limiting plate (35) is downward step-shaped from the surface of the limiting plate (35) provided with the groove in the groove, and is represented as a step T1-T5, wherein T5 is the lowest, and T1 is the highest; the limiting height is limited within the range of 1.6m-2.2 m;
when the position is limited by 1.6m to 1.7m, the distance between the top of the cargo compartment and the top of the roadway does not allow the cargo compartment to be overturned and unloaded, the control center (2) sends an instruction to the limiting actuating mechanism (3), specifically sends an instruction to the first magnetic control memory alloy spring (31) to deform the first magnetic control memory alloy spring, pushes an operating rod and a connecting rod which are connected with the second magnetic control memory alloy spring (33) to be horizontal, sends an instruction to the second magnetic control memory alloy spring (33) at the same time, controls heating devices of the two springs to heat simultaneously, enables the two springs of the second magnetic control memory alloy spring (33) to be heated and deformed to be maximum, enables the limiting pin (34) to move to the farthest position leftwards, and is in contact with the lowest limiting edge T5 in the groove of the limiting plate (35), and realizes the limitation of the cargo compartment; when the limit is 1.7-1.8m, the two springs of the second magnetic control memory alloy spring (33) are heated to deform, so that the whole memory alloy spring generates 3 deformations, and meanwhile, the two-way memory alloy spring generates one deformation; or the whole-process memory alloy spring and the two-process memory alloy spring are deformed; when the position is limited by 1.8m to 1.9m, two springs of the second magnetic control memory alloy spring (33) are heated to deform, so that the whole memory alloy spring generates 3 deformations, and meanwhile, the two-way memory alloy spring generates one deformation; or the whole-process memory alloy spring and the two-process memory alloy spring are deformed, so that the limiting pin (34) moves to the position along the T4 to be in contact with the T4 for limiting; when the position is limited by 1.9m-2.0m, the two springs of the second magnetic control memory alloy spring (33) are heated to deform, so that the whole-course memory alloy spring generates 3 deformations, or one of the whole-course memory alloy spring and the two-course memory alloy spring generates two deformations, and the other one generates one deformation, so that the limiting pin (34) moves to the position of the limiting edge T3 and contacts with the T3 to limit the position; when the position is limited by 2.0m-2.1m, the two springs of the second magnetic control memory alloy spring (33) are heated to deform, so that the whole-course memory alloy spring or the two-way memory alloy spring generates 2 deformations, or the whole-course memory alloy spring and the two-way memory alloy spring generate one deformation, and the limiting pin (34) moves to the position of the limiting edge T2 and contacts with the T2 to limit; when the position is limited by 2.1m-2.2m, the two springs of the second magnetic control memory alloy spring (33) are heated to deform, so that one of the whole-process memory alloy spring or the two-process memory alloy spring deforms by 1, and the limiting pin (34) moves to the position along the T1 to be in contact with the T1 for limiting.
2. The device for adjusting the unloading height of the cargo box of the trackless transport vehicle for the underground coal mine according to claim 1, wherein the limiting edges arranged on the limiting plates (35) are step-shaped, and each step-shaped limiting edge is arranged in an arc shape arranged on the surface of the limiting plate (35).
3. The device for adjusting the unloading height of the cargo bed of the trackless transport vehicle for the underground coal mine according to claim 2, wherein the number of the step-shaped limiting edges is set to be 5.
4. The device for adjusting the unloading height of the cargo bed of the trackless transport vehicle for the underground coal mine according to claim 1, wherein the first magnetic control memory alloy spring (31) is made of a two-way memory alloy and comprises two deformation forms.
5. The device for adjusting the unloading height of the cargo bed of the trackless transport vehicle for the underground coal mine according to claim 1, wherein the second magnetically controlled memory alloy spring (33) comprises two magnetically controlled memory alloy springs, one of which is made of a two-way memory alloy and comprises two deformation forms; the other is the preparation of the whole-course memory alloy, which comprises three deformation forms.
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| CN202010132045.XA CN111301254B (en) | 2020-02-29 | 2020-02-29 | Underground coal mine trackless transport vehicle cargo compartment unloading height adjusting device |
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| DE102015116622A1 (en) * | 2015-09-30 | 2017-03-30 | Schmitz Cargobull Ag | Hubroller and commercial vehicle equipped therewith |
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| CN204095720U (en) * | 2014-09-18 | 2015-01-14 | 陕西重型汽车有限公司 | A kind of tipper lifting mechanism safety monitoring assembly |
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| CN111301254A (en) | 2020-06-19 |
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