An automatic towrope device driven by emulsion hydraulic

Abstract

The application relates to an emulsion hydraulic driving automatic tow cable device, and relates to the technical field of coal mine equipment, which comprises a tow cable vehicle, a sliding cable groove, a pulley, a cable clamp plate, a hydraulic winch, a winding drum, a steel wire rope, a hydraulic assembly, an oil inlet pipe, an oil return pipe and an overflow pipe.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of coal mine equipment, in particular to an automatic cable dragging device driven by emulsion hydraulic pressure. BACKGROUND

[0002] With the development of coal mining machines, the total power and power density of thin seam and medium-thick seam coal mining machines are increasingly large, and the main cable of the coal mining machine is increasingly thick, which leads to the fact that the cable clamp plate for protecting the main cable is increasingly thick and large in size. The machine surface height of the thin seam and medium-thick seam coal mining machine is limited, and the depth of the matched cable groove cannot be too deep. At present, the depth of the cable groove can meet the requirement that two layers of cable clamp plates are stacked and slide in the cable groove. However, in the actual coal mining process, the cable clamp plate is often stacked in three layers or more than three layers, and when the cable clamp plate is stacked in three layers or more than three layers, the cable clamp plate slides off, and manual assistance is required for maintenance, which is time-consuming and laborious.

[0003] Domestic and foreign manufacturers have carried out certain research work and products on the automatic cable dragging, but from the use of these products, there are still problems of complex structure and large space occupation, and it is not easy to arrange in the underground working face. SUMMARY

[0004] In order to maintain the two-layer stacking state of the cable clamp plate and simplify the structure of the automatic cable dragging device, the application provides an automatic cable dragging device driven by emulsion hydraulic pressure.

[0005] The automatic cable dragging device driven by emulsion hydraulic pressure provided by the application adopts the following technical scheme:

[0006] An automatic cable dragging device driven by emulsion hydraulic pressure comprises:

[0007] A cable dragging vehicle is slidably arranged on a cable groove and comprises a pulley, and a cable clamp plate is wound around the pulley;

[0008] A hydraulic winch comprises a winding drum;

[0009] A steel wire rope is connected to the cable dragging vehicle at one end and wound on the winding drum at the other end;

[0010] A hydraulic assembly is used for supplying hydraulic oil to the hydraulic winch and comprises a hydraulic pump station shared with a mine hydraulic support.

[0011] By adopting the technical scheme, the hydraulic winch controls the movement and adjustment of the cable trailer to the cable clamp plate, so that the cable clamp plate is always stacked by two layers in the cable groove, the cable clamp plate is not easy to be pulled out of the cable groove, the manual maintenance work of the cable clamp plate is reduced, time and labor are saved, in most cases, a hydraulic support is arranged in a coal mine shaft to control the mine pressure of a coal mining face, a hydraulic system corresponding to the hydraulic winch uses a hydraulic pump station of the hydraulic support, is driven by emulsion, and power is provided by the emulsion pump station of the hydraulic support, so that a separate hydraulic pump station does not need to be designed, therefore, the automatic cable trailing device can be smaller in size, and is easy to be installed at a position of a tail of the coal mining machine; the length of the steel wire rope is half of the length of the working face, compared with a large-circulation automatic cable trailing device in the related art, the length of the steel wire rope is greatly shortened, so that the automatic cable trailing device is easy to be installed in an early stage and maintained in a later stage.

[0012] Optionally, the hydraulic assembly comprises:

[0013] An oil inlet pipe is connected between the hydraulic pump station and the hydraulic winch.

[0014] An oil return pipe is connected between the hydraulic pump station and the hydraulic winch.

[0015] An overflow pipe is connected between the oil inlet pipe and the oil return pipe, and an overflow valve is arranged on the pipe.

[0016] By adopting the technical scheme, when the coal mining machine moves towards the hydraulic winch, the winding drum of the hydraulic winch winds the steel wire rope, the steel wire rope is kept in tension during the winding process, at this time, the cable trailer moves towards the hydraulic winch; when the coal mining machine moves away from the hydraulic winch, the tension of the steel wire rope increases, the pressure in the hydraulic system also increases, when the pressure exceeds the set pressure of the overflow valve, the overflow valve is opened, the winding drum of the hydraulic winch is wound in the opposite direction, at this time, the cable trailer moves away from the hydraulic winch, and the automatic cable trailing is realized. The overflow valve has the functions of safety protection and adjustment of the tension of the steel wire rope, the steel wire rope is not easy to be broken, and the safety and working reliability of the automatic cable trailing device are improved.

[0017] Optionally, the cable trailer comprises:

[0018] A vehicle body;

[0019] A pulley is rotationally connected to the vehicle body.

[0020] A limiting base is connected to a bottom end of the vehicle body, and a limiting sliding block is arranged on the limiting base.

[0021] A limiting plate is connected to an inner side wall of the cable groove, and the limiting sliding block is slidingly arranged between the limiting plate and a bottom wall of the cable groove.

[0022] By adopting the technical scheme, the limiting block is limited by the cable groove and the limiting plate and can only slide along the cable groove, so that when the inclination angle of the cable groove is large, the towline car is not easy to come out of the cable groove, and the use of the towline device is more stable.

[0023] Optionally, the towline car comprises:

[0024] a car body;

[0025] a pulley rotatably connected to the car body;

[0026] a guide assembly connected to the bottom end of the car body and slidingly arranged in the cable groove;

[0027] a roller assembly arranged at two sides of the car body and rolling against the top end of the cable groove.

[0028] By adopting the technical scheme, when the cable groove is horizontally or nearly horizontally arranged, the towline car moves at the top end of the opening of the cable groove, and the roller assembly can make the movement of the towline car more smooth; the guide assembly can control the towline car to move along the length direction of the cable groove, so that the towline car is not easy to come out of the cable groove.

[0029] Optionally, the guide assembly and the roller assembly are detachably connected to the car body; and the width of the car body is smaller than the opening width of the cable groove.

[0030] By adopting the technical scheme, when the on-site environment is not suitable for the towline car to move at the top end of the cable groove, the guide assembly and the roller assembly can be detached, and the car body can be directly put into the cable groove for use, thereby improving the use flexibility of the towline car.

[0031] Optionally, the car body is provided with a connecting lug, and the connecting lug is provided with a rope passing hole.

[0032] By adopting the technical scheme, the steel wire rope can be connected to the connecting lug by binding or using a lock buckle, thereby facilitating installation and disassembly.

[0033] Optionally, the roller assembly comprises:

[0034] a wheel seat;

[0035] a rolling wheel rotatably connected to the wheel seat;

[0036] a plug-in rod arranged on the wheel seat and plugged into the car body.

[0037] By adopting the technical scheme, the roller assembly can be detachably connected to the car body in a plug-in manner, which is convenient and fast.

[0038] Optionally, the guide assembly comprises:

[0039] a guide block slidingly arranged in the cable groove;

[0040] The plug-in shaft is fixedly connected with a guide block and has a polygonal longitudinal section, and is inserted into the vehicle body;

[0041] The screw rod is fixedly connected to the end of the plug-in shaft away from the guide block and penetrates through the vehicle body;

[0042] The locking nut is threadedly connected to the screw rod.

[0043] By adopting the above technical scheme, the plug-in shaft is inserted into the vehicle body, the screw rod penetrates through the vehicle body, and the locking nut is screwed on the screw rod and abuts against the vehicle body after being tightened, so that the installation of the guide assembly is completed.

[0044] Optionally, the plug-in rod is provided with a clamping groove, the vehicle body is hingedly provided with a clamping plate, the plug-in shaft is provided with a push rod for pushing the clamping plate, and the plug-in rod and the vehicle body are provided with a compression spring.

[0045] By adopting the above technical scheme, the position of the roller assembly can be fixed after the clamping plate clamps the plug-in rod, the push rod can lift the clamping plate when the plug-in shaft is inserted, and the plug-in rod can be inserted at this time; when the plug-in shaft is pulled out, the plug-in rod can be automatically ejected by the compression spring, and the installation of the roller assembly and the guide assembly is convenient and fast, and the installation and disassembly efficiency can be improved.

[0046] Optionally, the two side walls in the rotating direction of the clamping plate are provided with elastic elements between the clamping plate and the vehicle body.

[0047] By adopting the above technical scheme, the elastic elements can make the clamping plate return to the initial position without external force and keep clamping the plug-in rod.

[0048] In summary, the present application has at least one of the following beneficial technical effects:

[0049] 1. The hydraulic winch controls the movement and adjustment of the cable clamp plate of the cable trailer, so that the cable clamp plate always only overlaps two layers in the cable groove, the cable clamp plate is not easy to be pulled out of the cable groove, the manual maintenance work of the cable clamp plate is reduced, and time and labor are saved;

[0050] 2. Most of the coal mine shafts are provided with hydraulic supports for controlling the mine pressure of the coal mining face, the hydraulic system corresponding to the hydraulic winch uses the hydraulic pump station of the hydraulic support, is driven by emulsion, and the power is provided by the emulsion pump station of the hydraulic support, so that a separate hydraulic pump station does not need to be designed, the automatic cable dragging device can be smaller, and an installation position can be easily found at the tail position of the coal mining machine;

[0051] 3. The required length of the steel wire rope is half of the length of the working face, compared with the large circulation automatic cable dragging device in the related art, the length of the required steel wire rope is greatly shortened, so that the automatic cable dragging device is easy to install in the early stage and is easy to maintain in the later stage;

[0052] 4. The overflow valve has safety protection and adjusting function of the steel wire rope tension, so that the steel wire rope is not easy to break, and the safety and reliability of the automatic towline device are improved;

[0053] 5. Compared with the automatic towline device in the related art, the automatic towline device has fewer components and relatively low cost. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application;

[0055] Figure 2 is a schematic diagram of the hydraulic system of embodiment 1 of the present application;

[0056] Figure 3 is a schematic diagram of the overall structure of the towline vehicle of embodiment 1 of the present application;

[0057] Figure 4 is a schematic diagram of the partial section of the towline vehicle of embodiment 1 of the present application;

[0058] Figure 5 is an enlarged view of A in Figure 4

[0059] Figure 6 is a schematic diagram of the structure of the guide assembly of embodiment 1 of the present application;

[0060] Figure 7 is a schematic diagram of the use of the towline vehicle of embodiment 1 of the present application in the cable groove after the guide assembly and the roller assembly are removed;

[0061] Figure 8 is a schematic diagram of the connection of the towline vehicle of embodiment 2 of the present application;

[0062] Figure 9 is a schematic diagram of the structure of the towline vehicle of embodiment 2 of the present application;

[0063] In the figure, 100, cable groove; 101, limiting plate; 1, towline vehicle; 11, pulley; 12, vehicle body; 121, connecting lug; 1211, rope passing hole; 122, clamping plate; 13, limiting base; 131, limiting sliding block; 14, guide assembly; 141, guide block; 142, plug-in shaft; 1421, push rod; 143, screw rod; 144, locking nut; 15, roller assembly; 151, wheel seat; 152, rolling wheel; 153, plug-in rod; 1531, clamping groove; 16, compression spring; 17, elastic member; 2, hydraulic winch; 21, winding drum; 3, steel wire rope; 4, hydraulic assembly; 41, oil inlet pipe; 42, oil return pipe; 43, overflow pipe; 431, overflow valve; 44, hydraulic pump station. DETAILED DESCRIPTION

[0064] The following will be described in combination with the​Figure 1 - attached Figure 9 , the present application is further described in detail.

[0065] Example 1:

[0066] The present application provides an automatic tow cable device driven by emulsion hydraulic, referring to Figure 1 , including a tow cable car 1, a hydraulic winch 2, a steel wire rope 3 and a hydraulic assembly 4. The tow cable car 1 is slidingly arranged on the cable groove 100, and the cable and the cable clamp plate are wound on the tow cable car 1; the hydraulic winch 2 is arranged at the tail of the coal mining machine, the winding drum 21 of the hydraulic winch 2 is wound with the steel wire rope 3, and the steel wire rope 3 is connected with the tow cable car 1; the hydraulic assembly 4 shares the hydraulic pump station 44 with the hydraulic support in the coal mine, and is used for driving the hydraulic winch 2.

[0067] The cable and the cable clamp plate can be reversed and stacked in the cable groove 100 through the tow cable car 1, and the cable clamp plate can be kept in the state of two-layer stacking through the movement of the tow cable car 1.

[0068] The hydraulic support is used in underground mining of the coal mine, and is used for controlling the mine pressure of the coal mining face. The hydraulic support is matched with the emulsion hydraulic pump station, which is used for providing power for the hydraulic support.

[0069] Referring to Figure 2 , the hydraulic assembly 4 is used for providing power for the hydraulic winch 2, and includes the hydraulic pump station 44, the oil inlet pipe 41, the oil return pipe 42, the overflow pipe 43, the pressure reducing valve, the overflow valve 431, the one-way throttle valve, the electromagnetic valve and the pressure gauge. The hydraulic pump station 44 is the emulsion hydraulic pump station of the hydraulic support, and the hydraulic pump station 44 does not need to be designed separately, so that the volume of the automatic tow cable device is effectively reduced, and the installation position of the automatic tow cable device is easy to find at the tail position of the coal mining machine. The overflow valve 431 is used for controlling the tension of the steel wire rope 3, and the one-way throttle valve is used for controlling the speed of winding the steel wire rope 3 by the hydraulic winch 2.

[0070] When the coal mining machine runs to the hydraulic winch 2, the winding drum 21 of the hydraulic winch 2 winds the steel wire rope 3, and the steel wire rope 3 maintains the tension during the winding process, at this time, the tow cable car 1 moves to the hydraulic winch 2; when the coal mining machine moves away from the hydraulic winch 2, the tension of the steel wire rope 3 increases, and the pressure in the hydraulic system also increases, when the pressure exceeds the set pressure of the overflow valve 431, the overflow valve 431 opens, the winding drum 21 of the hydraulic winch 2 rotates in the opposite direction, at this time, the tow cable car 1 moves away from the hydraulic winch 2, and the automatic tow cable is realized. The overflow valve 431 has the functions of safety protection and adjusting the tension of the steel wire rope 3, so that the steel wire rope 3 is not easy to break, and the safety and working reliability of the automatic tow cable device are improved.

[0071] Referring to Figure 3The towing winch 1 comprises a vehicle body 12, a pulley 11, a guide assembly 14 and a roller assembly 15. The vehicle body 12 is a U-shaped frame, and the pulley 11 is rotatably connected in the vehicle body 12 for the cable clamp plate to pass by reversing. A connecting lug 121 is welded on the side wall of the vehicle body 12 away from the opening, and a rope passing hole 1211 is arranged on the connecting lug 121. The steel wire rope 3 can be connected with the connecting lug 121 by binding or using a lock buckle, so as to facilitate installation and disassembly.

[0072] With reference to Figure 4 and Figure 5 The roller assembly 15 is provided with four groups and is arranged on both sides of the vehicle body 12. The roller assembly 15 comprises a wheel seat 151, a rolling wheel 152 and a plug-in rod 153. The wheel seat 151 is a rectangular plate, and the rolling wheel 152 is rotatably connected on one side of the wheel seat 151. The plug-in rod 153 is a rectangular longitudinal section rod, which is plugged into the vehicle body 12. A rectangular clamping groove 1531 is arranged on the upper side of the end of the plug-in rod 153 away from the rolling wheel 152.

[0073] A clamping plate 122 is hingedly connected in the vehicle body 12, and the clamping plate 122 is opposite to the clamping groove 1531. When the clamping plate 122 is turned into the clamping groove 1531, the plug-in rod 153 can be locked in the vehicle body 12. Arc-shaped guide rods are fixedly connected on both sides of the turning direction of the clamping plate 122, and the curvature of the guide rods is coaxial with the central axis of the clamping plate 122. The guide rods are arranged through the vehicle body 12 and guide the turning of the clamping plate 122. Elastic members 17 are respectively sleeved on the guide rods. In the embodiment of the application, the elastic members 17 are springs, and the two springs are of the same specification, so that the clamping plate 122 can be automatically turned to the central position.

[0074] A compression spring 16 is arranged between the end of the plug-in rod 153 away from the wheel seat 151 and the vehicle body 12. When the clamping plate 122 is turned out of the clamping groove 1531, the plug-in rod 153 will be automatically pushed out of the vehicle body 12 by the compression spring 16.

[0075] With reference to Figure 4 and Figure 6The guide assembly 14 comprises a guide block 141, a plug-in shaft 142, a screw rod 143 and a locking nut 144. The longitudinal section of the guide block 141 is T-shaped, the lower end is used for sliding in the cable groove 100, and two plug-in shafts 142 are vertically welded on one side of the upper end, the plug-in shafts 142 are rectangular shafts and are plugged into the vehicle body 12. The screw rod 143 is welded on the end of the plug-in shaft 142 away from the guide block 141, the screw rod 143 penetrates out of the vehicle body 12 and is threadedly connected with the locking nut 144. The locking nut 144 is screwed against the vehicle body 12 to fix the position of the plug-in shaft 142 in the vehicle body 12, and two locking nuts 144 are arranged for each screw rod 143 to prevent loosening. The push rods 1421 are vertically welded on the side walls of the two plug-in shafts 142 away from each other, and are used for pushing the clamping plates 122 to rotate, and the distance between the two push rods 1421 is less than the distance between the two clamping plates 122 on the same side of the vehicle body 12.

[0076] The installation method of the roller assembly 15 and the guide assembly 14 is as follows: the plug-in shaft 142 is inserted into the vehicle body 12, when the push rods 1421 close to the guide block 141 push the clamping plates 122 to be lifted, the two roller assemblies 15 close to the guide block 141 are inserted, the plug-in shaft 142 is continuously inserted, the clamping plates 122 away from the guide block 141 are lifted by the push rods 1421 away from the guide block 141, and the other two roller assemblies 15 are installed according to the above steps; the plug-in shaft 142 is inserted to the bottom, the locking nut 144 is screwed into the screw rod 143 to abut against the vehicle body 12, and the installation is completed.

[0077] The installation method of the roller assembly 15 and the guide assembly 14 is as follows: the locking nut 144 is unscrewed, the plug-in shaft 142 is pulled out, and the push rods 1421 will lift the clamping plates 122 in turn, and the compression springs 16 automatically pop out the roller assemblies 15.

[0078] Referring to Figure 7 After the roller assemblies 15 and the guide assemblies 14 are removed, the towing vehicle 1 can be directly placed in the cable groove 100 for use. By selecting whether to use the roller assemblies 15 and the guide assemblies 14, the towing vehicle 1 can roll on the cable groove 100 or slide in the cable groove 100, and has high flexibility.

[0079] Embodiment 2:

[0080] The difference between the embodiment 2 and the embodiment 1 of the present application is that the structure of the towing vehicle 1 is different. Referring to Figure 8 and Figure 9The towing cable vehicle 1 comprises a vehicle body 12, a pulley 11 and a limiting base 13. The vehicle body 12 is U-shaped, and the pulley 11 is rotatably connected in the vehicle body 12. The limiting base 13 comprises a limiting sliding block 131 and a connecting portion. The limiting sliding block 131 is shuttle-shaped, and a connecting portion is integrally formed at the top end. The connecting portion has a long strip hexagonal cross section, is inserted into the bottom end of the vehicle body 12, and is bolted with the vehicle body 12. The side wall away from the opening of the vehicle body 12 is provided with a rectangular connecting plate, and the connecting plate is provided with a through hole for connecting the steel wire rope 3.

[0081] When the inclination angle of the cable groove 100 is large, limiting plates 101 can be vertically welded on the two vertical side walls in the cable groove 100, and a spacing is arranged between the two limiting plates 101 for the connecting portion to slide. The limiting sliding block 131 is slidably arranged between the limiting plates 101 and the bottom of the cable groove 100. Even if the inclination angle of the cable groove 100 is large, the limiting block can prevent the towing cable vehicle 1 from being easily pulled out of the cable groove 100, so that the use of the automatic towing cable device is more stable.

[0082] The embodiments of the specific implementation are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same parts are indicated by the same reference numerals. Therefore, equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An emulsion hydraulic drive automatic towrope device, characterized by, The utility model relates to a cable car (1) is slidably arranged on a cable groove (100), comprising a pulley (11), a cable clamp plate passes through the pulley (11); a hydraulic winch (2) comprising a winding drum (21); a steel wire rope (3) is connected to one end of the cable car (1) and is wound on the winding drum (21); a hydraulic assembly (4) is used for providing hydraulic oil for the hydraulic winch (2), comprising a hydraulic pump station (44) shared with a mine hydraulic support; the cable car (1) comprises: a vehicle body (12); the pulley (11) is rotatably connected to the vehicle body (12); a guide assembly (14) is connected to the bottom end of the vehicle body (12) and is slidably arranged in the cable groove (100); a roller assembly (15) is arranged on both sides of the vehicle body (12) and rolls against the top end of the cable groove (100); the roller assembly (15) comprises: a wheel seat (151); a rolling wheel (152) is rotatably connected to the wheel seat (151); a plug-in rod (153) is arranged on the wheel seat (151) and is plugged into the vehicle body (12); the guide assembly (14) and the roller assembly (15) are detachably connected to the vehicle body (12); the width of the vehicle body (12) is less than the opening width of the cable groove (100); the guide assembly (14) comprises: a guide block (141) is slidably arranged in the cable groove (100); a plug-in shaft (142) is fixedly connected to the guide block (141) and is plugged into the vehicle body (12); a screw rod (143) is fixedly connected to one end of the plug-in shaft (142) away from the guide block (141) and penetrates the vehicle body (12); a locking nut (144) is threadedly connected to the screw rod (143); the plug-in rod (153) is provided with a clamping groove (1531), the vehicle body (12) is hingedly provided with a clamping plate (122), the plug-in shaft (142) is provided with a push rod (1421) for pushing the clamping plate (122), and the plug-in rod (153) and the vehicle body (12) are provided with a compression spring (16); both side walls in the rotating direction of the clamping plate (122) are provided with elastic members (17) between the vehicle body (12). The hydraulic assembly (4) comprises: an oil inlet pipe (41) connected between the hydraulic pump station (44) and the hydraulic winch (2); an oil return pipe (42) connected between the hydraulic pump station (44) and the hydraulic winch (2); an overflow pipe (43) connected between the oil inlet pipe (41) and the oil return pipe (42), and provided with an overflow valve (431) on the pipe. The vehicle body (12) is provided with a connecting lug (121), and the connecting lug (121) is provided with a rope penetrating hole (1211). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. An automatically towrope device driven by emulsion hydraulic pressure according to claim 1, characterized in that, ​ ​ ​ ​ 3. An automatically operated towing-gear according to claim 1, characterized in that, ​

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