WO2011106954A1

WO2011106954A1 - Shuttle car

Info

Publication number: WO2011106954A1
Application number: PCT/CN2010/074323
Authority: WO
Inventors: 金嵘; 庄德胜; 韩宇; 石磊; 杨庆丰; 迟玉华
Original assignee: 湖南三一智能控制设备有限公司; 三一重型装备有限公司
Priority date: 2010-03-04
Filing date: 2010-06-23
Publication date: 2011-09-09
Also published as: CN101797903A; CN101797903B

Abstract

A shuttle car includes a drum (3) round which a electric cable (41) is wound, and wheels (5) the front end of which is provided with a guide wheel (42). The electric cable (41) passes through the guide wheel (42) and then connects with a power source. The shuttle car also includes a tension detecting device (1) for detecting the tension of the electric cable (41) and sending a signal, and a control device (2) for receiving said signal and sending out a command to the shuttle car and the drum (3). When tension that is detected by the tension detecting device (1) is up to the predetermined value, the speed of the shuttle car is larger or equal to the speed of the electric cable (41) under the control of the control device (2). Therefore the electric cable (41) can be prevented from stretch-breaking while it is pressed by the wheel (5) of the shuttle car.

Description

Shuttle car

The present application claims priority to Chinese Patent Application No. 2010101270264, the entire disclosure of which is incorporated herein in Technical field

The invention relates to the field of coal conveying machinery, in particular to a shuttle car. Background technique

The shuttle is a coal transportation machine in the underground. The shuttle has a reel, and the reel is wound with a certain length of cable. When the shuttle is in operation, the reel performs cable collection or cable laying operation, so that the shuttle can reciprocate. Thereby achieving the purpose of coal transportation.

Please refer to FIG. 1. FIG. 1 is a schematic structural view of a typical shuttle car in the prior art.

The prior art shuttle comprises a wheel 5', the front end of which is provided with a cable guiding wheel 4'2, and the cable 4'1 on the reel bypasses the cable guiding wheel 4'2 and is connected to an external power source. Due to the uneven road and poor lighting, there is a phenomenon that the cable 4' 1 is easily pulled off by additional tension (such as the cable 4' 1 being pressed by the wheel y), which will lead to a safety accident. On the one hand, it will also affect work efficiency.

As shown in Figure 1, when the shuttle is driving to the left or to the right, the reel is likely to be cabled or cabled. When the shuttle is driving to the left, at this time, if the reel is performing the cable-laying operation, when the cable

When the 4' 1 is pressed by the wheel, it is obvious that the cable 4' 1 is not broken. At this time, if the cable reel is subjected to the cable receiving operation, when the cable 4' 1 is pressed by the wheel, it is possible that the speed is inconsistent. This causes the cable 4' 1 to be pulled off.

As shown in Fig. 1, when the shuttle car is traveling to the right, if the cable reel performs the cable receiving operation at this time, when the cable 4'1 is pressed by the wheel, it is apparent that the cable 4'1 is pulled off; At this time, if the cable reel is subjected to the cable discharging operation, when the cable 4' 1 is pressed by the wheel, the cable 4' 1 may be pulled off due to the inconsistent speed. It should be noted that the shuttle car travels to the left as the shuttle car travels to the left in FIG. 1 , that is, the wheel 5 ′ rotates counterclockwise; the shuttle car drives to the right as the shuttle car in FIG. 1 . Driving right, that is, turning the wheel 5' clockwise.

In addition, in addition to the cable 4'1 being crushed by the wheel 5' and being broken, the cable 4'1 may be pulled apart by other additional pulling forces due to the narrow underground roadway and complicated working conditions. In summary, when the cable is pressed by the wheel, how to prevent the cable from being broken, thereby preventing a safety accident and affecting work efficiency, is an urgent problem to be solved by those skilled in the art. Summary of the invention

The technical problem to be solved by the present invention is to provide a shuttle car which can prevent the occurrence of cable breakage when the cable is pressed by the wheel, thereby preventing a safety accident and affecting the work efficiency, thereby solving the above technical problem. The invention provides a shuttle, comprising a reel, the reel is wound with a cable; the shuttle further comprises a wheel, a front end of the wheel is provided with a guiding wheel, and the cable is connected to the power supply around the guiding wheel; The shuttle also includes:

a tension detecting device, configured to detect a tensile force received by the cable, and send a signal; a control device, configured to receive the signal, and issue an instruction to the shuttle and the reel; when the tension detecting device detects When the pulling force reaches a predetermined value, the speed of the shuttle is greater than or equal to the speed of the cable under the control of the control device;

Defining that the speed of the shuttle when traveling to the left is a positive value, and the speed of traveling to the right is a negative value; defining that the speed at which the cable is wound into the reel is a positive value, the speed of being unwound from the reel Is a negative value.

Preferably,

When the tension detected by the tension detecting device reaches a predetermined value and when the reel performs a cable receiving operation, the control device controls the reel to stop or reverse, and controls the shuttle to stop driving;

The control device controls the shuttle to stop traveling when the tension detected by the tension detecting device reaches a predetermined value and when the reel performs a cable discharging operation.

Preferably, the tension detecting device comprises a roller, the roller is connected with a mechanical triggering element, the tension detecting device further comprises an elastic element, the elastic component is fixed at one end, and the other end is connected to the mechanical triggering component, the cable The roller is bypassed; the tension detecting device further includes a feedback element;

The mechanical triggering element moves toward a direction close to the feedback element when the tensile force to the cable is gradually increased and is equal to the predetermined value, and triggers the feedback element, the feedback element emitting the signal .

Preferably, the feedback element is a travel switch. Preferably, the control device includes a hydraulic control device and an electrical control device; the feedback component is a cut-off width, the cut-off width is connected to the hydraulic control device through a feedback oil passage, and a pressure sensor is disposed on the feedback oil passage;

When the mechanical triggering element triggers the shut-off valve, the shut-off valve is opened, the feedback oil passage is turned on, and the hydraulic control device sends out to the reel under the action of the feedback oil passage oil An instruction to stop or reverse;

The pressure sensor senses the pressure of the oil passage oil, and sends a signal to the electric control device, and the electric control device issues an instruction to stop the traveling to the shuttle.

Preferably, the mechanical triggering element and the feedback element are both mounted on a guide wheel bracket of the shuttle.

Preferably, the elastic element is a spring.

Preferably, the spring is connected to an adjustment device for adjusting the preload of the spring.

Based on the prior art, the shuttle provided by the present invention is provided with a tension detecting device and a control device; the tensile force detecting device is configured to detect a tensile force received by a portion of the cable wound on the guiding wheel, and send a signal; The control device is configured to receive the signal and issue an instruction to the shuttle and the reel; when the tension detected by the tension detecting device reaches a predetermined value, under the control of the control device, The speed of the shuttle is greater than or equal to the speed of the cable.

When the shuttle is driving to the left, if the cable reel performs the cable receiving operation, the speed of the shuttle and the speed at which the cable is wound into the reel are positive, when the cable is pressed by the wheel, and when the shuttle is When the speed is greater than or equal to the speed at which the cable is wound into the reel, it is obvious that the cable will not be broken at this time; however, when the speed of the shuttle is less than the speed at which the cable is wound into the reel, the cable is tightened at this time. The tension applied is gradually increased, and when the tension applied to the cable reaches a predetermined value, the tension detecting device detects the predetermined value and sends a signal to the control device, and the control device respectively issues an instruction to the shuttle power device or the reel power device, thereby The speed of the shuttle is increased or the speed of the reel is reduced, or both the speed of the shuttle and the speed of the reel are increased such that the speed of the shuttle is greater than or equal to the speed at which the cable is wound into the reel. When the shuttle is driving to the left, if the cable reel is subjected to the cable discharging operation, when the cable is pressed by the wheel, it is apparent that the pulling force of the cable is not increased, that is, the cable is not pulled off. When the shuttle is driving to the right, if the cable reel performs the cable receiving operation, the speed of the shuttle is negative, the speed of the cable being wound into the reel is positive, and the speed of the shuttle is less than the speed of the cable. The cable is tightened, and the tension applied to the cable is increased. When the tension applied to the cable reaches the predetermined value, the process described in the above paragraph is repeated, and finally the speed of the shuttle is greater than or equal to the speed of the cable. In this case, the following may be included. Solution: First, the control device controls the shuttle to drive to the left so that its speed is positive and greater than or equal to the speed at which the cable is wound into the reel; second, the shuttle continues to the right, and the control device controls the reel reversal , the cable laying operation, so that the speed of the cable is negative, and the speed of the shuttle is greater than or equal to the speed of the cable at this time; Third, under the control of the control device, the shuttle stops driving, the speed is zero, the reel Stop operation or reverse, the speed of the cable is zero or negative, and the speed of the shuttle is also greater than or equal to the speed of the cable. Obviously, all three technical solutions can make the speed of the shuttle be greater than or equal to the speed of the cable, thereby reducing the tension of the cable and preventing the occurrence of the pull-off phenomenon.

When the shuttle is driving to the right, if the cable reel is cabled, the speed of the shuttle and the speed at which the cable is unwound from the reel are negative, when the cable is pressed by the wheel, and when the shuttle is When the speed is greater than or equal to the speed at which the cable is wound into the reel, it is obvious that the cable will not be broken at this time; however, when the speed of the shuttle is less than the speed at which the cable is unwound from the reel, that is, the absolute value of the shuttle speed is greater than At this time, the absolute value of the cable speed, obviously the cable is tightened, the tension on the cable is gradually increased, and when the tension of the cable reaches a predetermined value, the above process is repeated, and finally the speed of the shuttle is greater than or equal to the cable from the reel. The speed of the roll-out reduces the tension on the cable and prevents the breakage.

As can be seen from the above, the shuttle provided by the present invention can prevent the occurrence of cable breakage when the cable is pressed by the wheel, thereby preventing a safety accident and affecting work efficiency. DRAWINGS

1 is a schematic structural view of a typical shuttle car in the prior art;

2 is a schematic structural view of a shuttle car according to an embodiment of the present invention;

3 is a schematic structural view of a shuttle car according to another embodiment of the present invention;

4 is a schematic structural view of a tensile force detecting device according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a tensile force detecting device according to another embodiment of the present invention. detailed description

The core of the present invention is to provide a shuttle which can prevent the occurrence of cable breakage when the cable is pressed by the wheel, thereby preventing a safety accident and affecting work efficiency.

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

2 and FIG. 3, FIG. 2 is a schematic structural view of a shuttle car according to an embodiment of the present invention; and FIG. 3 is a schematic structural view of a shuttle car according to another embodiment of the present invention.

In one embodiment, as shown in FIG. 3, the shuttle provided by the present invention includes a reel 3 (shown in FIG. 2), and the reel 3 is wound with a cable 41; the shuttle further includes a wheel 5, The front end of the wheel 5 is provided with a guide wheel 42, and the cable 41 is connected to the power supply around the guide wheel 42; the speed at which the shuttle is driven to the left is defined as a positive value, and the speed when traveling to the right is a negative value; The speed of the reel 3 is positive, and the speed of the reeling from the reel 3 is a negative value. It should be noted that the shuttle is driving to the left as the shuttle is driving to the left in FIG. 2, that is, the wheel 5 for counterclockwise rotation; the shuttle car traveling to the right is the shuttle car traveling to the right in FIG. 2, that is, the wheel 5 is rotated clockwise.

Based on the above prior art, as shown in FIG. 2, the shuttle provided by the present invention is further provided with a tensile force detecting device 1 and a control device 2; the tensile force detecting device 1 is configured to detect the tensile force received by the cable 41, and send a signal. The control device 2 is configured to receive the signal and issue an instruction to the shuttle and the reel 3; when the tension of the cable 41 detected by the tension detecting device 1 reaches a predetermined value, under the control of the control device 2, The speed of the shuttle is greater than or equal to the speed of the cable 41. It should be noted that the predetermined value is smaller than the tensile force received when the cable 41 is pulled off; when the reel 3 performs the cable receiving operation, the speed of the cable 41 refers to the speed at which the cable 41 is wound into the reel 3. When the reel 3 is subjected to the cable discharging operation, the speed of the cable 41 refers to the speed at which the cable 41 is unwound from the reel 3.

As shown in Fig. 2, when the shuttle is traveling to the left, at this time, if the reel 3 performs the cable receiving operation, the speed of the shuttle and the speed at which the cable 41 is wound into the reel 3 are both positive, when the cable 41 is When the wheel 5 is pressed, and when the speed of the shuttle is greater than or equal to the speed at which the cable 41 is wound into the reel 3, it is apparent that the cable 41 is not pulled off at this time; however, when the speed of the shuttle is smaller than the winding of the cable 41 At the time of the speed of the drum 3, the cable 41 is tightened at this time, and the pulling force received by the cable 41 is gradually increased. When the pulling force received by the cable 41 reaches a predetermined value, the tension detecting device 1 detects the predetermined value and goes to the control device 2 Signaling, the control device 2 issues a finger to the shuttle power unit or the reel power unit Thus, thereby increasing the speed of the shuttle or reducing the speed of the reel 3, or simultaneously increasing the speed of the shuttle and reducing the speed of the reel 3, thereby causing the speed of the shuttle to be greater than or equal to the winding of the cable 41. The speed of the barrel 3, thereby reducing the tension applied to the cable and preventing the occurrence of a pull-off phenomenon. When the shuttle is traveling to the left, if the reel 3 is subjected to the cable discharging operation, when the cable 41 is pressed by the wheel 5, it is apparent that the pulling force of the cable 41 is not increased, that is, the cable 41 is not broken. The phenomenon.

As shown in Fig. 2, when the shuttle is traveling to the right, if the reel 3 performs the cable receiving operation, the speed of the shuttle is negative, and the speed at which the cable 41 is wound into the reel 3 is positive, the speed of the shuttle Less than the speed of the cable, it is obvious that the cable 41 is tightened at this time, and the pulling force of the cable 41 is increased. When the pulling force of the cable 41 reaches the predetermined value, the process described in the above paragraph is repeated, and finally the speed of the shuttle is greater than or Equal to the speed of the cable 41, at this time, the following scheme may be included: First, the control device 2 controls the shuttle to travel in the reverse direction, that is, travels to the left such that its speed is positive, and is greater than or equal to the cable 41 being wound into the reel 3 Second, the shuttle continues to the right, the control device 2 controls the reel 3 to reverse, performs a cable-laying operation, so that the speed of the cable 41 is negative, and the speed of the shuttle is greater than or equal to the cable 41 at this time. The speed, that is, the absolute value of the shuttle speed is less than or equal to the absolute value of the speed of the cable 41 at this time; third, under the control of the control device 1, the shuttle stops driving, the speed is zero, the reel 3 When the operation is stopped or reversed, the speed of the cable 41 is zero or a negative value, and the speed of the shuttle is also greater than or equal to the speed of the cable 41. Obviously, the three technical solutions can make the speed of the shuttle higher than or equal to the speed of the cable 41, thereby reducing the tension of the cable 41 and preventing the occurrence of the pull-off phenomenon.

When the shuttle is traveling to the right, if the reel 3 performs the cable discharging operation, the speed of the shuttle and the speed at which the cable 41 is unwound from the reel 3 are both negative, when the cable 41 is pressed by the wheel 5, and When the speed of the shuttle is greater than or equal to the speed at which the cable 41 is unwound from the reel 3, it is apparent that the cable is not pulled off at this time; however, when the speed of the shuttle is less than the speed at which the cable 41 is unwound from the reel 3, That is, the absolute value of the shuttle speed is greater than the absolute value of the speed of the cable 41 at this time, and it is obvious that the cable 41 is tightened, and the pulling force of the cable 41 is gradually increased. When the tension of the cable 41 reaches a predetermined value, the above is repeated. The process ultimately causes the speed of the shuttle to be greater than or equal to the speed at which the cable 41 is unwound from the spool 3, thereby reducing the tension experienced by the cable 41 and preventing the occurrence of a pull-off phenomenon.

Finally, it should be noted that in the present embodiment, the type of the tension detecting device 1 is not limited, and the tension detecting device 1 can be used for real-time quantitative detection of the pulling force of the cable 41. When the detected cable 41 pull force reaches the predetermined value, the control device 2 sends a signal; of course, the tension detecting device 1 can also be a tension sensing device, and the tension sensing device cannot detect in real time. The cable pull value, but can send a feedback signal to the control device 2 when the cable pull reaches a predetermined value, such as the pull force detecting device 1 consisting of the roller 11, the mechanical triggering element 12, the elastic member 13 and the feedback element 14 described hereinafter. .

In summary, the shuttle provided by the present invention can prevent the cable 41 from being broken when the cable 41 is pressed by the wheel 5, thereby preventing a safety accident and affecting work efficiency.

In the above embodiments, we can make further improvements. Specifically, when the tension detected by the tension detecting device 1 reaches a predetermined value, and when the reel 3 performs the cable receiving operation, the tension detecting device 1 sends a signal to the control device 2, according to which the control device 2 goes to the reel 3 An instruction to stop or reverse (ie, the cable-laying operation) is issued, and an instruction to stop driving is issued to the shuttle.

When the tension detected by the tension detecting device reaches a predetermined value, and when the reel 3 performs the cable discharging operation, the tension detecting device 1 sends a signal to the control device 2, according to which the control device 2 sends a stop to the shuttle. Instructions.

Obviously, in the case where the pulling force of the cable 41 reaches a predetermined value, the embodiment enables the shuttle to stop traveling and causes the reel 3 to stop or perform a cable discharging operation, thereby preventing not only the cable 41 being pressed by the wheel 5 but also being depressed. Cable breakage occurs and prevents cable breakage due to other extra tension.

In addition, this embodiment adopts a scheme in which the shuttle is stopped, and the reel 3 is stopped or the cable discharging operation is performed. The technical means is relatively simple, and the program is tubular, and the operation is convenient.

Referring to FIG. 4 and FIG. 5, FIG. 4 is a schematic structural view of a tensile force detecting device according to an embodiment of the present invention; and FIG. 5 is a schematic structural view of a tensile force detecting device according to another embodiment of the present invention.

Another embodiment of the invention is an improvement made on the basis of any of the above embodiments. Specifically, in the other embodiment, the tension detecting device 1 comprises a roller 11 to which the mechanical triggering element 12 is connected, the mechanical triggering element 12 is connected with a resilient element 13 fixed at one end, and the cable 41 bypasses the roller 11, such as As shown in FIG. 4 and FIG. 5, when the tension applied to the cable 41 is increased, the force of the cable 41 to the roller 11 is increased, and the force of the mechanical triggering member 12 to the elastic member 13 is increased. The force of the triggering element 12 acting on the elastic element 13 is greater than the elastic element When the preload of the member 13, the elastic member 13 is compressed, and the mechanical trigger member 12 is moved to the left; when the tension applied to the cable 41 is gradually increased to the predetermined value, the mechanical triggering member 12 just triggers the feedback member 14, feedback Element 14 sends a feedback signal.

As shown in FIG. 4, the feedback component 14 may specifically be a travel switch, the mechanical trigger component 12 triggers the travel switch, the travel switch generates an action, and outputs a signal to the control device 2, according to the signal, the control device 2 to the reel power device and The shuttle power unit issues a command to cause the reel 3 to stop or reverse, causing the shuttle to stop traveling.

As shown in FIG. 5, the feedback element 14 can also be a shut-off valve. In this embodiment, the control device 2 can be divided into a hydraulic control device 21 and an electrical control device (not shown in FIG. 5), and the shut-off valve passes through the feedback oil passage. 15 is connected to the hydraulic control device 21, and a pressure sensor 16 is provided on the feedback oil passage 15.

As shown in FIG. 5, when the mechanical triggering element 12 triggers the shutoff valve, the shutoff valve is opened, the feedback oil passage 15 is turned on, and the flowing oil of the feedback oil passage 15 is fed back to the hydraulic control device 21 provided in the hydraulic main circuit, the hydraulic pressure The control device 21 in turn issues an instruction to the reel power unit to cause the reel 3 to stop or reverse.

As shown in FIG. 5, a pressure sensor 16 is disposed on the feedback oil passage 15, and after sensing the pressure of the oil flowing from the feedback oil passage 15, the pressure sensor 16 sends a signal to the electrical control device, and the electrical control device The shuttle power unit issues a command to stop the shuttle.

In this embodiment, a hydraulic component such as a shut-off valve is used to generate a trigger signal, and a trigger signal is generated with respect to an electrical component such as a travel switch or a photoelectric switch, thereby eliminating the electric control box used for packaging the electrical component, and also eliminating the coal safety certification. The program can be implemented immediately, reducing both manufacturing costs and time costs.

In the above embodiment, both the mechanical triggering member 12 and the feedback member 14 are mounted on the guide wheel bracket 43 of the shuttle. As shown in FIGS. 4 and 5, the elastic member 13 may specifically be a spring, and the spring may be further connected with an adjusting device for adjusting the preload of the spring. At the time of commissioning, the spring can be conveniently adjusted by means of the adjusting device, so that the spring has a suitable preloading force which ensures that the mechanical triggering element 12 just triggers when the cable 41 pulls to the predetermined value. Feedback element 14. Of course, we can also adjust the spring so that when the cable 41 pulls the predetermined value, the mechanical triggering element 12 just triggers the feedback element 14 and makes this The spring also just reaches the compression limit position.

The shuttle car provided by the present invention has been described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, and the description of the above embodiments is merely to assist in understanding the method of the present invention and its core idea. It should be noted that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the invention.

Claims

Rights request

A shuttle comprising a reel (3), the reel (3) being wound with a cable (41); the shuttle further comprising a wheel (5), the front end of the wheel (5) being provided with a guide Wheel (42), the cable

(41) bypassing the guide wheel (42) and connecting with a power source; wherein the shuttle further comprises: a tension detecting device (1) for detecting a tensile force received by the cable (41) and transmitting a signal ;

a control device (2) for receiving the signal and issuing an instruction to the shuttle and the reel (3);

When the tension detected by the tension detecting device (1) reaches a predetermined value, the speed of the shuttle is greater than or equal to the speed of the cable (41) under the control of the control device (2); It is stated that the speed when the shuttle is traveling to the left is a positive value, and the speed when traveling to the right is a negative value; the speed at which the cable (41) is wound into the reel (3) is defined as a positive value from the reel (3) The speed of the roll-out is negative.

2. The shuttle according to claim 1, wherein the control is performed when the tension detected by the tension detecting device (1) reaches a predetermined value and when the reel (3) performs a cable receiving operation The device (2) controls the reel (3) to stop or reverse, and controls the shuttle to stop traveling; when the tension detected by the tension detecting device (1) reaches a predetermined value and when the reel ( 3) When the cable laying operation is performed, the control device (2) controls the shuttle to stop traveling.

3. The shuttle according to claim 2, wherein the tension detecting device (1) comprises a roller (11), the roller (11) is connected with a mechanical triggering element (12), and the tension detecting device (1) further comprising an elastic member (13), the elastic member (13) is fixed at the end, the other end is connected to the mechanical triggering member (12), and the cable (41) bypasses the roller (11); The tension detecting device (1) further includes a feedback element (14);

When the pulling force of the cable (41) is gradually increased and is exactly equal to the predetermined value, the mechanical triggering element (12) moves in a direction close to the feedback element (14) and triggers the feedback element (14), the feedback element (14) emits the signal.

4. Shuttle in accordance with claim 3, characterized in that the feedback element (14) is a travel switch.

The shuttle according to claim 3, characterized in that the control device (2) comprises a hydraulic control device (21) and an electric control device; the feedback element (14) is a shut-off valve, and the shut-off valve is connected to the hydraulic control device (21) via a feedback oil passage (15), the feedback oil passage ( 15) a pressure sensor (16) is provided thereon;

When the mechanical triggering element (12) triggers the cut-off width, the cut-off is wide open, the feedback oil passage (15) is turned on, and under the action of the oil of the feedback oil passage (15), a hydraulic control device (21) issues an instruction to stop or reverse the reel (3);

The pressure sensor (16) senses the pressure of the oil in the feedback oil passage (15), and sends a signal to the electric control device, and the electric control device issues an instruction to stop the traveling to the shuttle.

The shuttle according to any one of claims 3 to 5, characterized in that the mechanical triggering element (12) and the feedback element (14) are both mounted to the guide wheel bracket of the shuttle (43) ).

The shuttle according to any one of claims 3 to 5, characterized in that the elastic member (13) is a spring.

8. A shuttle according to claim 7, wherein said spring is coupled to an adjustment device for adjusting the preload of said spring.