An automatic charging pile for mining trolleys

Abstract

The present invention relates to the field of mining production technology, and in particular to an automatic charging pile for a mining trolley, comprising an electric push rod installed on the upper part of the trolley, a male contact head, and a plurality of female contacts installed below a traveling track, wherein the trolley is suspended below the traveling track, and the electric push rod drives the male contact head to approach or move away from the female contact head; a plurality of female contacts are evenly arranged below the guide rail, the female contact head is connected to a power supply, and the male contact head is connected to a battery pack inside the trolley. An automatic charging pile for a mining trolley of the present invention proposes a stable, safe, and fast automatic charging structure, and adopts a mechanical electric push rod to realize the male contact head approaching or moving away from the female contact head, so as to realize the contact and separation of the male contact head and the female contact head, thereby ensuring that the long-distance trolley is charged quickly when powered by a lithium battery, and the structure is simple, stable, and easy to install.

Description

Technical Field

[0001] The invention relates to the field of mining production technology, and in particular to an automatic charging pile for a mining traveling vehicle. Background Art

[0002] With the development of intelligent walking vehicles in the coal industry, various walking vehicles with different drive structures have emerged one after another, and the biggest difference lies in the research on the energy supply mode of the walking vehicles. For example, for a long-distance cruising range of more than 3 km, the weight of the walking vehicle must not exceed the pressure range of the drive structure. Within the pressure range, the cruising range should be guaranteed as much as possible, so the optimization of the charging structure is particularly important.

[0003] At present, most intelligent walking vehicles in the coal industry are powered by lithium batteries, which are installed inside the walking vehicle. However, when the actual endurance needs to be extended, the corresponding energy storage device needs to increase weight, which puts a lot of pressure on the drive structure. Summary of the invention

[0004] In view of the problem in the prior art that the driving structure has a high pressure during long-term endurance, the present invention provides an automatic charging pile for a mining traveling vehicle.

[0005] The present invention is achieved through the following technical solutions:

[0006] An automatic charging pile for a mining trolley comprises an electric push rod installed on the upper part of the trolley, a male contact and a plurality of female contacts installed below a traveling track, wherein the trolley is suspended below the traveling track, and the electric push rod drives the male contact to approach or move away from the female contact; a plurality of female contacts are evenly arranged below a guide rail, the female contact is connected to a power supply, and the male contact is connected to a battery pack inside the trolley.

[0007] Preferably, the male contact includes a male contact block, a telescopic part and an insulating layer, the male contact block is connected to the insulating layer, the telescopic part is connected to the inside of the insulating layer, one end of the telescopic part is connected to a side of the male contact block close to the insulating layer, the male contact block is connected to a battery pack, the side of the male contact block opposite to the telescopic part is in contact with the female contact, and the telescopic part is made of conductive material; the output end of the electric push rod is connected to the insulating layer.

[0008] Preferably, the telescopic member is made of elastic material.

[0009] Preferably, the telescopic member is a spring.

[0010] Preferably, the female contact comprises a power supply copper block and a female insulating block, the power supply copper block is connected to the female insulating block, one side of the power supply copper block is connected to the power supply, and the other side is in contact with the male contact block.

[0011] Preferably, a mounting plate is connected to the side of the female insulating block opposite to the power supply copper block, and the mounting plate is detachably connected to the walking track.

[0012] Preferably, the cross-sectional area of ​​the power supply copper block parallel to the travel track is larger than the cross-sectional area of ​​the male contact block parallel to the travel track.

[0013] Preferably, a control unit is further provided inside the walking trolley, and an output end of the control unit is connected to an input end of the electric push rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The automatic charging pile for a mining trolley of the present invention proposes a stable, safe and fast automatic charging structure, which uses a mechanical electric push rod to make the male contact head approach or move away from the female contact head, so as to achieve the contact and separation of the male contact head and the female contact head, thereby ensuring that the long-distance trolley is powered by a lithium battery, and the charging is fast, the structure is simple, stable and easy to install. At the same time, it can also take into account the ultra-low temperature and long distance conditions in the coal mine environment, so the stability of the charging structure is required to be high.

[0016] Furthermore, by providing a telescopic piece, close contact between the male contact block and the power supply copper block can be achieved, which helps to improve stability during charging.

[0017] Furthermore, the detachable mounting plate is for facilitating the connection between the female insulating block and the running track, thereby realizing the installation of the female contacts.

[0018] Furthermore, the cross-sectional area of ​​the power supply copper block parallel to the walking track is larger than the cross-sectional area of ​​the male contact block parallel to the walking track in order to make corresponding adaptation to the stopping position of the walking trolley, improve the fault tolerance of the stopping position of the walking trolley, and further improve the stability of the walking trolley during charging.

[0019] Furthermore, the control unit controls the electric push rod, which pushes the male contact to approach or move away from the female contact to realize the connection and disconnection of the current.

[0020] Furthermore, the contact surface is relatively large during charging, and can carry at least 20A of current, thereby improving the charging efficiency of the lithium battery and ensuring the endurance of the walking car. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the mining trolley and the walking track;

[0022] Figure 2 It is a schematic diagram of the contact between the male contact and the male female contact of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the mining lower car and the male contact of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the male contact of the present invention;

[0025] Figure 5 yes Figure 3 The enlarged view of point A in the middle;

[0026] Figure 6 It is a structural schematic diagram of the male and female connectors of the present invention.

[0027] In the figure, 1. electric push rod; 2. walking trolley; 3. male contact; 4. walking track; 5. female contact; 6. male contact block; 7. telescopic part; 8. insulating layer; 9. female insulating block; 10. power supply copper block; 11. mounting plate; 12. elongated hole; 13. connecting piece. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0029] The present invention discloses an automatic charging pile for a mining trolley, referring to Figure 1 , 2 , including an electric push rod 1 installed on the upper part of the traveling trolley 2, a male contact 3 and a plurality of female contacts 5 installed under the traveling track 4. The traveling trolley 2 is suspended under the traveling track 4, and the electric push rod 1 drives the male contact 3 to approach or move away from the female contact 5.

[0030] Reference Figure 3 , 4 The male contact 3 includes a male contact block 6, a telescopic member 7 and an insulating layer 8. The male contact block 6 is connected to the insulating layer 8. The telescopic member 7 is connected to the inside of the insulating layer 8. One end of the telescopic member 7 is connected to a side of the male contact block 6 close to the insulating layer 8. The male contact block 6 is connected to the battery pack, and the side of the male contact block 6 opposite to the telescopic member 7 is in contact with the female contact 5.

[0031] Reference Figure 5 The output end of the electric push rod 1 is connected to the insulating layer 8. In this embodiment, the insulating layer 8 is cylindrical, and two opposite elongated holes 12 are opened on the side wall. A connecting piece 13 is penetrated through the elongated hole 12. The output end of the electric push rod 1 is located inside the insulating layer 8. The connecting piece 13 passes through the elongated hole 12 and the end of the output end of the electric push rod 1. The telescopic member 7 is made of conductive material and elastic material. In this embodiment, the telescopic member 7 is a spring. By setting the telescopic member 7, the male contact block 6 can be in close contact with the power supply copper block 10, which helps to improve the stability during charging.

[0032] Multiple female contacts 5 are evenly arranged below the guide rail, referring to Figure 6 The female contact 5 includes a power supply copper block 10 and a female insulating block 9. The power supply copper block 10 is connected to the female insulating block 9. One side of the power supply copper block 10 is connected to the power supply, and the other side is in contact with the male contact block 6. The power supply copper block 10 is connected to the positive and negative poles of the power supply, which correspond to the positive and negative poles of the male contact block 6 respectively. The positive and negative poles of the male contact block 6 are connected to the lithium battery pack inside the walking trolley 2. After the charging system is started, the male contact 3 and the female contact 5 are in contact to form a power supply circuit, so that the lithium battery of the walking trolley 2 can be charged.

[0033] Reference Figure 6 A mounting plate 11 is provided on the side of the female insulating block 9 opposite to the power supply copper block 10. The mounting plate is detachably connected to the running track 4. The detachable mounting plate is to facilitate the connection between the female insulating block 9 and the running track 4, thereby realizing the installation of the female contact. In this embodiment, the mounting plate 11 is connected to the running track 4 by bolts, and can also be a snap connection.

[0034] The cross-sectional area of ​​the power supply copper block 10 parallel to the travel track 4 is larger than the cross-sectional area of ​​the male contact block 6 parallel to the travel track 4, which is to make corresponding adaptation to the parking position of the walking trolley 2, improve the fault tolerance of the parking position of the walking trolley 2, and further improve the stability of the walking trolley 2 during charging. In this embodiment, the contact surface between the male contact block 6 and the power supply copper block 10 is relatively large, and the contact area between the male contact block 6 and the power supply copper block 10 is 140*50mm, which can carry at least 20A of current, improve the charging efficiency of the lithium battery, and ensure the endurance of the walking trolley.

[0035] A control unit is also provided inside the walking trolley 2 , and the output end of the control unit is connected to the input end of the electric push rod 1 . The control unit can control both the movement of the walking trolley 2 and the extension and retraction of the electric push rod 1 , thereby achieving long-distance endurance of the walking trolley 2 .

[0036] The implementation principle of the automatic charging pile for a mining trolley of the present invention is as follows: when it is detected that the track-type trolley 2 needs to be charged, the control unit of the trolley 2 issues a charging command, the trolley 2 automatically drives to the designated position of the track 4, and the control unit of the trolley 2 starts the charging command. After the charging command is issued, the electric push rod 1 slowly extends, and due to the elastic action of the telescopic member 7, the male contact 3 and the female contact 5 are in close contact, forming a current loop, and the trolley 2 starts to charge.

[0037] After the charging is completed, the control unit of the walking trolley 2 issues a command to retract the electric push rod 1, driving the male contact head 3 to move downward in the vertical direction, so that the male contact head 3 is separated from the female contact head 5, and the charging operation is completed, completing one charging.

[0038] The automatic charging pile for a mining trolley of the present invention proposes a stable, safe and fast automatic charging structure, and adopts a mechanical electric push rod 1 to make the male contact 3 approach or move away from the female contact 5, so as to realize the contact and separation of the male contact 3 and the female contact 5, so as to ensure that the long-distance walking trolley 2 is charged quickly when powered by lithium batteries, and the structure is simple, stable and easy to install. At the same time, it can also take into account the ultra-low temperature and long distance conditions in the coal mine environment, with wide applicability, rainproof and dustproof, and suitable for use in harsh environments. Moreover, the accessories are highly independent, simple to repair and replace, and low in cost, which solves the power supply problem of the mining rail-type walking trolley 2.

Claims

1. An automatic charging pile for a mining trolley, characterized in that: The invention comprises an electric push rod (1) installed on the upper part of a traveling trolley (2), a male contact head (3) and a plurality of female contact heads (5) installed below a traveling track (4); the traveling trolley (2) is suspended below the traveling track (4); the electric push rod (1) drives the male contact head (3) to approach or move away from the female contact head (5); the plurality of female contact heads (5) are evenly arranged below the traveling track (4); the female contact heads (5) are connected to a power supply; and the male contact heads (3) are connected to a battery pack inside the traveling trolley (2); The male contact (3) comprises a male contact block (6), a telescopic member (7) and an insulating layer (8), wherein the male contact block (6) is connected to the insulating layer (8), the telescopic member (7) is connected to the inside of the insulating layer (8), one end of the telescopic member (7) is connected to a side of the male contact block (6) close to the insulating layer (8), the male contact block (6) is connected to a battery pack, the side of the male contact block (6) opposite to the telescopic member (7) is in contact with the female contact (5), and the telescopic member (7) is made of a conductive material; the output end of the electric push rod (1) is connected to the insulating layer (8); The insulating layer (8) is cylindrical, and the side wall of the insulating layer (8) is provided with two elongated holes (12) arranged opposite to each other. A connecting piece (13) is passed through the elongated hole (12). The output end of the electric push rod (1) is located inside the insulating layer (8). The connecting piece (13) passes through the elongated hole (12) and the output end of the electric push rod (1). The telescopic piece (7) can drive the male contact block (6) to be in close contact with the power supply copper block.

2. The automatic charging pile for mining trolley according to claim 1 is characterized in that: The telescopic member (7) is made of elastic material.

3. The automatic charging pile for mining trolley according to claim 2 is characterized in that: The telescopic member (7) is a spring.

4. The automatic charging pile for mining trolley according to claim 1 is characterized in that: The female contact (5) comprises a power supply copper block (10) and a female insulating block (9), wherein the power supply copper block (10) is connected to the female insulating block (9), one side of the power supply copper block (10) is connected to a power supply, and the other side is in contact with a male contact block (6).

5. The automatic charging pile for mining trolley according to claim 4 is characterized in that: A mounting plate (11) is connected to the side of the female insulating block (9) opposite to the power supply copper block (10), and the mounting plate (11) is detachably connected to the walking track (4).

6. The automatic charging pile for mining trolley according to claim 4 is characterized in that: The cross-sectional area of ​​the power supply copper block (10) parallel to the running track (4) is greater than the cross-sectional area of ​​the male contact block (6) parallel to the running track (4).

7. The automatic charging pile for mining trolley according to claim 1 is characterized in that: A control unit is also provided inside the walking trolley (2), and an output end of the control unit is connected to an input end of the electric push rod (1).

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