Underground anti-sliding safety device

Abstract

The utility model discloses an underground anti-sliding safety device, which relates to the technical field of coal mine safety production equipment, and comprises an extrusion positioning piece, a cylinder body, a cylinder cover, a driving device, a driving device and a driving device, the cylinder body is internally provided with a sealing cavity, the sealing cavity is internally provided with a movable part, the movable part is matched with the extrusion positioning part, and the other end of the movable part extends out of the cylinder body; the motor is arranged at one end, far away from the extrusion positioning piece, of the cylinder body and is provided with a screw rod matched with the movable piece; the device can greatly shorten the braking response time and improve the safety of a safe transport vehicle in a mine tunnel; a good braking effect can be ensured even under a complex track condition, the dependence of a track braking device on a track state is avoided, and the track braking device is suitable for various inclined shaft or inclined roadway transportation systems; the problems that in the prior art, the response speed is low, braking is not timely, and the braking effect is greatly influenced by the rail state are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine production safety equipment, and in particular relates to an underground anti-runaway safety device. Background Art

[0002] In the process of coal mining, the safe operation of the underground transportation system is of vital importance. Especially in inclined shafts or inclined tunnels, the transportation safety of mine cars is a key point that must be strictly controlled. In the existing underground transportation system, when the mine car is running in the inclined shaft or inclined tunnel, once the rope breaks or loses control, the mine car may run away, causing serious casualties and equipment damage. Therefore, the existing anti-runaway safety devices usually use car blockers, car doors or track brake devices, but these devices have problems such as slow response speed, untimely braking, and inconvenient use, and it is difficult to effectively prevent the occurrence of runaway accidents.

[0003] Most of the existing underground anti-runaway safety devices rely on mechanical structures, such as car blockers and car doors. These devices require manual operation, have a long response time, and may lose the best braking opportunity due to operation delays in emergency situations. At the same time, although the track braking device can directly act on the mine car, its braking effect is greatly affected by the state of the track, and it is easy to cause damage to the mine car and the track during the braking process, affecting the service life. Therefore, the existing underground anti-runaway safety devices have problems in actual applications, such as slow response speed, untimely braking, inconvenient use, the braking effect is greatly affected by the state of the track, and possible damage to the equipment, and are in urgent need of improvement.

[0004] Based on this, the utility model proposes an underground anti-runaway safety device with fast response speed and good braking effect to solve the problems existing in the above-mentioned prior art. Utility Model Content

[0005] In view of this, the main purpose of the utility model is to provide an underground anti-runaway safety device.

[0006] In order to achieve the above-mentioned purpose of being able to effectively and stably prevent the safe transport vehicle in the mine from running away, the technical solution of the utility model is implemented as follows:

[0007] An underground safety device for preventing a running car from falling into a well, comprising:

[0008] An extrusion positioning member is movably arranged at one end of the cylinder body and extends out of the cylinder body to match the wheels of the safety transport vehicle in the mine tunnel;

[0009] The cylinder body is a sealed structure, a sealed cavity is arranged in the cylinder body, and a movable part is arranged in the sealed cavity, the movable part matches the extrusion positioning part, and the other end of the movable part extends out of the cylinder body;

[0010] The motor is arranged on one end of the cylinder body away from the extrusion positioning piece, and a screw rod is arranged at the power output end of the motor to match the movable piece.

[0011] In a preferred embodiment, the extrusion positioning member comprises:

[0012] A first piston is movably disposed in the sealed cavity, a front chamber is formed between the first piston and the front inner side wall of the cylinder body, and matches the outlet end of the second hydraulic passage disposed in the cylinder body;

[0013] A pressure plate, which is arranged outside the cylinder body and matches the wheel;

[0014] The movable connecting rod is arranged between the first piston and the pressure plate, and a spring is sleeved on the movable connecting rod between the first piston and the inner wall of the cylinder body.

[0015] In a preferred embodiment, a limit ring is further provided in the cylinder body, and the limit ring matches the first piston.

[0016] In a preferred embodiment, the movable part comprises:

[0017] A rectangular connecting rod is arranged at the rear end of the second piston and extends outside the cylinder body;

[0018] The second piston is movably arranged in the sealing cavity, a rear chamber is formed between the second piston and the rear end inner side wall of the cylinder body, and a middle chamber is formed between the first piston and the second piston.

[0019] In a preferred embodiment, a thread groove is further provided in the rectangular connecting rod, and the thread groove is threadably connected to the screw rod.

[0020] In a preferred embodiment, the rear chamber is connected to the outlet end of the first hydraulic channel arranged on the inner wall of the cylinder body, and is also connected to the inlet end of the second hydraulic channel arranged on the inner wall of the cylinder body; and a one-way valve is provided at the inlet end of the first hydraulic channel, and a one-way valve is provided at the outlet end of the second hydraulic channel.

[0021] In a preferred embodiment, the middle chamber is communicated with an inlet end of a first hydraulic channel arranged on the inner wall of the cylinder body.

[0022] In a preferred embodiment, sealing rings are provided at both ends of the cylinder body, and the sealing rings match the movable connecting rod and the rectangular connecting rod.

[0023] In a preferred embodiment, an oil guide hole is further provided on the first piston, and a one-way valve is provided in the oil guide hole.

[0024] In a preferred embodiment, the screw rod is detachably connected to the motor via a connecting pin.

[0025] Compared with the prior art, the utility model provides an underground anti-runaway safety device, which has the following beneficial effects:

[0026] 1. Through the setting of the motor and the screw rod, it can start quickly and achieve the maximum braking effect when in use, which greatly shortens the braking response time and improves the safety of the safe transport vehicle in the mine tunnel; at the same time, it adopts automatic control, does not require manual operation, reduces operation delays and human errors, and improves the reliability and safety of the device;

[0027] 2. By setting the extrusion positioning piece to directly contact the wheel, a good braking effect can be ensured even under complex track conditions, avoiding the dependence of the track brake device on the track state; at the same time, the device is not affected by the track state and is suitable for transportation systems of various inclined shafts or inclined lanes, which improves the versatility and adaptability of the device;

[0028] 3. Through the setting of the cylinder body, the extrusion positioning parts and the adjusting movable parts, the friction force and the clamping force can be stably provided to brake and position the safe transport vehicle in the mine tunnel; the problems of the existing underground anti-runaway safety device in actual application, such as slow response speed, untimely braking, inconvenient use, the braking effect is greatly affected by the track state and possible damage to the equipment, are solved; the purpose of effectively and stably preventing the safe transport vehicle in the mine tunnel from running away is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is a positioning effect diagram of the underground anti-runaway car safety device of the utility model;

[0031] Figure 2 This is a diagram showing the adjustment effect of the positioning process of the underground anti-runaway safety device of the utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the underground anti-runaway safety device of the utility model;

[0033] Figure 4 This is a cross-sectional view of the utility model of the underground anti-runaway safety device (I);

[0034] Figure 5 For this utility model Figure 4 A partial enlarged view of the middle A;

[0035] Figure 6 This is a cross-sectional view (II) of the utility model of the underground anti-runaway safety device;

[0036] Figure 7 For this utility model Figure 6 A partial enlarged view of point B in the middle;

[0037] Figure 8 It is a structural schematic diagram of the screw rod of the utility model;

[0038] Fig. 9 This is a schematic diagram of the structure of the extrusion positioning member of the utility model.

[0039]

Main component symbol description

[0040] 1. Wheel; 2. Extrusion positioning member; 21. First piston; 211. Oil guide hole; 22. Pressure plate; 23. Movable connecting rod; 3. Cylinder body; 31. Sealing chamber; 311. Middle chamber; 312. Front chamber; 313. Rear chamber; 32. First hydraulic channel; 33. Second hydraulic channel; 34. Limiting ring; 4. Motor; 5. Motor fixing seat; 6. Spring; 7. Movable member; 71. Rectangular connecting rod; 72. Second piston; 8. Screw rod; 9. Connecting pin. DETAILED DESCRIPTION

[0041] The underground anti-runaway car safety device is further described in detail below in conjunction with the accompanying drawings and embodiments of the utility model.

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0044] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0045] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0046] Embodiment 1:

[0047] See also Figures 1 to 9 , the utility model provides a technical solution:

[0048] An underground anti-runaway safety device is installed on one or both sides of the wheel 1 of a safety transport vehicle in a mine tunnel, or installed on an inclined tunnel transport tunnel in a mine, and is used to position the wheel 1 by extrusion or friction during use, so as to avoid accidents caused by the safety transport vehicle losing control due to gravity or disturbance during temporary stop for loading, resulting in abnormal operation along the tunnel under the action of its own gravity component. It includes an extrusion positioning member 2, a cylinder body 3 and a motor 4; wherein:

[0049] The extrusion positioning member 2 is movably arranged at one end of the cylinder body 3 and extends out of the cylinder body 3 to cooperate with the wheel 1 to position the wheel 1;

[0050] The cylinder body 3 is a sealed cylinder body, and a sealed sealed cavity 31 is formed in the cylinder body 3, and a movable part 7 is arranged in the sealed cavity 31. A piston at one end of the movable part 7 cooperates with the tail piston of the extrusion positioning part 2, and the other end of the movable part 7 extends out of the cylinder body 3;

[0051] The motor 4 is arranged on one end of the cylinder body 3 away from the extrusion positioning member 2, and is connected to the cylinder body 3 through a motor fixing seat 5. A screw rod 8 is arranged at the power output end of the motor 4 for use in conjunction with the movable member 7.

[0052] When in use, the movable part 7 is rotated and adjusted by the motor 4 to move in the cylinder 3, and the position of the extrusion positioning part 2 is adjusted by the movable part 7 moving in the cylinder 3, so that it acts on the wheel 1, and the safety transport vehicle in the mine tunnel is fixed to prevent it from running away, thereby ensuring the safety of the safety transport vehicle in the mine tunnel during use.

[0053] Embodiment 2:

[0054] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Fig. 9 , different from the above-mentioned embodiment 1, the extrusion positioning member 2 includes a first piston 21, a pressure plate 22 and a movable connecting rod 23; wherein: the first piston 21 is movably arranged in the sealing cavity 31, in close contact with the inner side wall of the cylinder body 3, and a front chamber 312 is formed between the first piston 21 and the inner side wall of the front end of the cylinder body 3, and is used in conjunction with the outlet end of the second hydraulic channel 33 arranged in the cylinder body 3; the pressure plate 22 is arranged on the outside of the cylinder body 3, connected to the movable connecting rod 23, and used in conjunction with the wheel 1 to position the wheel 1; the movable connecting rod 23 is arranged between the first piston 21 and the pressure plate 22, and is used to connect the first piston 21 with the pressure plate 22, and a spring 6 is also sleeved on the movable connecting rod 23 between the first piston 21 and the inner side wall of the cylinder body 3, and the movable connecting rod 23 moves along the length direction of the cylinder body 3, and is used in conjunction with a sealing ring arranged on the side wall of the cylinder body 3 to prevent the hydraulic oil in the cylinder body 3 from leaking out.

[0055] When in use, the first piston 21 moves in the sealing chamber 31 to drive the pressure plate 22 to move towards or away from the wheel 1, so as to achieve the clamping, locking and release of the wheel 1; the spring 6 is provided to facilitate the resetting of the pressure plate 22 after the pressure plate 22 approaches the wheel 1, so as to achieve the automatic release of the wheel 1; at the same time, in order to limit the first piston 21 when the first piston 21 moves to the outlet end of the second hydraulic channel 33, a limiting ring 34 is also provided in the cylinder body 3 to cooperate with the first piston 21 to limit the first piston 21.

[0056] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 The movable part 7 includes a rectangular connecting rod 71 and a second piston 72; wherein: the rectangular connecting rod 71 is arranged at the rear end of the second piston 72, and is used in conjunction with a sealing ring arranged on the side wall of the cylinder body 3, and moves along the length direction of the cylinder body 3, and a threaded groove is arranged in the rectangular connecting rod 71; the second piston 72 is movably arranged in the sealing cavity 31, and is in close contact with the inner wall of the cylinder body 3, and a rear chamber 313 is formed between the second piston 72 and the inner wall of the rear end of the cylinder body 3, which is connected to the outlet end of the first hydraulic channel 32 and the inlet end of the second hydraulic channel 33 arranged on the side wall of the cylinder body 3, and a middle chamber 311 is formed between the first piston 21 and the second piston 72, and the middle chamber 311 is connected to the inlet end of the first hydraulic channel 32.

[0057] See also Figure 6 and Fig. 9 The first piston 21 is also provided with an oil guide hole 211 , and a one-way valve is provided in the oil guide hole 211 . Through the setting of the one-way valve, the hydraulic oil in the front chamber 312 can enter the middle chamber 311 in one direction.

[0058] See also Figure 6 and Figure 7 A one-way valve is provided at the inlet end of the first hydraulic channel 32 , and the hydraulic oil in the middle chamber 311 can enter the rear chamber 313 in one direction through the setting of the one-way valve.

[0059] See also Figure 6 and Figure 7 A one-way valve is provided at the outlet end of the second hydraulic channel 33 , and the one-way valve allows the hydraulic oil in the rear chamber 313 to enter the front chamber 312 in one direction.

[0060] See also Figure 4 and Figure 6 The sealing chamber 31 is divided into three directly connected middle chambers 311, front chambers 312 and rear chambers 313 by the first piston 21 and the second piston 72, and the middle chambers 311, front chambers 312 and rear chambers 313 are all filled with high-pressure hydraulic oil.

[0061] When in use, while adjusting the pressure plate 22 to move outward to lock the wheel 1, the position of the second piston 72 in the cylinder 3 is first adjusted by the rotation of the motor 4, so that the chambers of the middle chamber 311 and the front chamber 312 gradually become smaller, and part of the high-pressure hydraulic oil in the original middle chamber 311 enters the rear chamber 313 through the first hydraulic channel 32; at the same time, during the backward movement of the first piston 21, part of the high-pressure oil in the front chamber 312 also enters the middle chamber 311 through the oil guide hole 211, and finally enters the rear chamber 313 through the first hydraulic channel 32; until the first piston 21 moves to When the limit ring 34 is in position, the motor 4 stops moving. At this time, the first piston 21 moves to the outlet end of the second hydraulic channel 33 to seal the second hydraulic channel 33. At this time, the volume of hydraulic oil in the middle chamber 311 is constant (because the second hydraulic channel 33 is sealed, the hydraulic oil in the rear chamber 313 cannot flow out and is in a fixed volume state. Therefore, when under pressure, the hydraulic oil in the middle chamber 311 cannot enter the rear chamber 313. Therefore, the volume of hydraulic oil in the middle chamber 311 is constant). At this time, the positions of the first piston 21 and the pressure plate 22 are locked, completing the clamping and friction positioning of the wheel 1. At this time, the spring 6 is compressed.

[0062] After the positioning is completed, when the motor 4 rotates in the opposite direction, it drives the second piston 72 to move toward the side close to the motor 4. At this time, the pressure of the second piston 72 is small, and then the first piston 21 is slowly reset under the reset action of the spring 6, and the outlet of the second hydraulic channel 33 is opened, so that the flow of hydraulic oil between the middle chamber 311, the front chamber 312 and the rear chamber 313 is realized again, thereby releasing the wheel 1.

[0063] Embodiment 3:

[0064] See also Figure 4 , Figure 5 Figure 7 The screw rod 8 is connected to the motor 4 via a connecting pin 9 and is threadedly connected to the thread groove in the rectangular connecting rod 71.

[0065] When in use, the drive shaft of the motor 4 rotates to drive the screw rod 8 to rotate, and then the screw connection between the screw rod 8 and the rectangular connecting rod 71 drives the second piston 72 to move in the cylinder body 3 to adjust the position of the second piston 72 in the cylinder body 3.

[0066] As described in Examples 1 to 3, the use process and principle of the underground anti-runaway car safety device include:

[0067] First, the underground anti-runaway safety device is assembled and installed on one or both sides of the wheel 1 of the safety transport vehicle in the mine tunnel, or installed on the inclined tunnel transportation tunnel under the mine;

[0068] Then, when the safety transport vehicle moves to the position to be positioned in the mine tunnel, the drive shaft of the motor 4 rotates to drive the screw rod 8 to rotate, and then the screw connection between the screw rod 8 and the rectangular connecting rod 71 drives the second piston 72 to move in the cylinder body 3, thereby adjusting the position of the second piston 72 in the cylinder body 3;

[0069] Wherein: in the process of adjusting the pressure plate 22 to move outward and locking the wheel 1, the second piston 72 is adjusted to move in the cylinder body 3 by the motor 4, so that the chambers of the middle chamber 311 and the front chamber 312 gradually become smaller, and part of the high-pressure hydraulic oil in the original middle chamber 311 enters the rear chamber 313 through the first hydraulic channel 32; at the same time, in the process of the first piston 21 moving backward, part of the high-pressure oil in the front chamber 312 also enters the middle chamber 311 along the oil guide hole 211, and finally enters the rear chamber 313 through the first hydraulic channel 32; until the first piston 21 moves to the position of the limit ring 34, the motor 4 stops moving, at this time the first piston 21 moves to the outlet end of the second hydraulic channel 33, the second hydraulic channel 33 is sealed, at this time the volume of the hydraulic oil in the middle chamber 311 is constant, at this time the positions of the first piston 21 and the pressure plate 22 are locked, the clamping and friction positioning of the wheel 1 are completed, at this time the spring 6 is compressed;

[0070] Finally, after the positioning is completed, when the motor 4 rotates in the opposite direction, it drives the second piston 72 to move toward the side close to the motor 4. At this time, the pressure of the second piston 72 is small, and then the first piston 21 is slowly reset under the reset action of the spring 6, and the outlet of the second hydraulic channel 33 is opened, and the flow of hydraulic oil between the middle chamber 311, the front chamber 312 and the rear chamber 313 is realized again, so as to release the wheel 1; this cycle is repeated to complete the positioning of the safe transport vehicle in the mine tunnel and ensure its safe use.

[0071] It should be noted that the motor 4, one-way valve, etc. in the above description are all relatively mature devices in existing technology applications. The specific models can be selected according to actual needs. At the same time, the motor 4 can be powered by a built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. An underground anti-runaway safety device, characterized in that: include: An extrusion positioning member (2) is movably arranged at one end of the cylinder body (3) and extends out of the cylinder body (3) to match the wheel (1) of the safety transport vehicle in the mine tunnel; A cylinder body (3) is provided with a sealed cavity (31) therein, and a movable part (7) is provided in the sealed cavity (31), the movable part (7) matches the extrusion positioning part (2), and the other end of the movable part (7) extends out of the cylinder body (3); The motor (4) is arranged on an end of the cylinder body (3) away from the extrusion positioning member (2), and a screw rod (8) is arranged at the power output end of the motor (4) to match the movable member (7); The extrusion positioning member (2) comprises: A first piston (21) is movably disposed in the sealed cavity (31), and a front chamber (312) is formed between the first piston (21) and the front inner side wall of the cylinder body (3), and matches an outlet end of a second hydraulic passage (33) disposed in the cylinder body (3); A pressure plate (22) is arranged outside the cylinder body (3) and matches the wheel (1); The movable connecting rod (23) is arranged between the first piston (21) and the pressure plate (22), and a spring (6) is sleeved on the movable connecting rod (23) between the first piston (21) and the inner wall of the cylinder body (3).

2. The underground anti-runaway safety device according to claim 1, characterized in that: A limit ring (34) is also provided in the cylinder body (3), and the limit ring (34) matches the first piston (21).

3. The underground anti-runaway safety device according to claim 1, characterized in that: The movable part (7) comprises: A rectangular connecting rod (71) is arranged at the rear end of the second piston (72) and extends outside the cylinder body (3); The second piston (72) is movably disposed in the sealed cavity (31), a rear chamber (313) is formed between the second piston (72) and the rear end inner side wall of the cylinder body (3), and a middle chamber (311) is formed between the first piston (21) and the second piston (72).

4. The underground anti-runaway safety device according to claim 3, characterized in that: A thread groove is also provided in the rectangular connecting rod (71), and the thread groove is threadably connected to the lead screw (8).

5. The underground anti-runaway safety device according to claim 3, characterized in that: The rear chamber (313) is communicated with the outlet end of a first hydraulic channel (32) provided on the inner wall of the cylinder body (3), and is also communicated with the inlet end of a second hydraulic channel (33) provided on the inner wall of the cylinder body (3); a one-way valve is provided at the inlet end of the first hydraulic channel (32), and a one-way valve is provided at the outlet end of the second hydraulic channel (33).

6. The underground anti-runaway safety device according to claim 3, characterized in that: The middle chamber (311) is in communication with an inlet end of a first hydraulic channel (32) provided on the inner wall of the cylinder body (3).

7. The underground anti-runaway safety device according to claim 3, characterized in that: Both ends of the cylinder body (3) are provided with sealing rings, and the sealing rings match the movable connecting rod (23) and the rectangular connecting rod (71).

8. The underground anti-runaway safety device according to claim 1, characterized in that: The first piston (21) is also provided with an oil guide hole (211), and a one-way valve is provided in the oil guide hole (211).

9. The underground anti-runaway safety device according to claim 1, characterized in that: The screw rod (8) and the motor (4) are detachably connected via a connecting pin (9).

Images