Crawler belt moving type temporary supporting bracket for underground coal mine roadway

Abstract

The utility model relates to the field of coal mine underground roadway supporting brackets, and discloses a crawler belt moving type temporary supporting bracket for a coal mine underground roadway, which comprises driving wheels and crawler belt chassis which are divided into two groups and are arranged on the outer sides of the driving wheels; the driving motor is mounted in the driving wheel and is equivalent to four-wheel drive of an automobile after being combined with the driving wheel; the second connecting plate is mounted on a shell of the driving motor; the first connecting plate is fixed to the top of the driving motor; the supporting platform plate is fixed to the top of the first connecting plate; and the supporting bracket unit is mounted above the supporting platform plate. The crawler moving unit is arranged and used for moving the whole temporary supporting bracket, the three-stretching jack is matched with the ship-shaped top plate, and the first connecting plate is matched with the ship-shaped bottom plate, so that the situation that the crawler chassis directly supports the bottom of a roadway in the bracket supporting process is prevented, and the possibility that the crawler chassis is damaged is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of roadway support brackets in coal mines, and specifically relates to a crawler mobile temporary support bracket for coal mine roadways underground. Background Technique

[0002] In coal mines underground, it is often necessary to support the roadway roof. Originally, wooden crib support was used, and currently, a unit support is used for support. However, this unit support is not convenient to move. It is very laborious and inefficient to move it from one place to another, and the manual labor intensity is high. Therefore, a temporary support bracket that can support coal mine roadways underground and is convenient to move is needed. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a crawler mobile temporary support bracket for coal mine roadways underground, which solves the problems mentioned in the above background.

[0004] The utility model provides the following technical solutions:

[0005] The utility model discloses a crawler mobile temporary support bracket for coal mine roadways underground, which includes four groups of symmetrically arranged driving wheels.

[0006] The crawler chassis is divided into two groups and installed on the outside of the driving wheels.

[0007] The driving motor is installed inside the driving wheel, and when combined with the driving wheel, it is equivalent to the four-wheel drive of an automobile.

[0008] The connecting plate II is installed on the outer shell of the driving motor.

[0009] The connecting plate I is fixed on the top of the driving motor.

[0010] The support platform plate is fixed on the top of the connecting plate I.

[0011] The support bracket unit is installed above the support platform plate.

[0012] Furthermore, the support bracket unit includes a triple-extension jack, a boat-shaped roof plate, and a lower cylinder sleeve surrounding the lower cylinder sleeve. Among them, the lower cylinder sleeve is welded to the surface of the support platform plate away from the connecting plate I. The triple-extension jack is installed inside the lower cylinder sleeve, the top of the triple-extension jack is connected to the upper cylinder sleeve, and the boat-shaped roof plate is welded to the surface of the upper cylinder sleeve away from the lower cylinder sleeve.

[0013] Furthermore, installation holes are provided on the surface of the support platform plate, a bottom-lifting cylinder sleeve is fixed above the installation holes, a bottom-lifting jack is installed inside the bottom-lifting cylinder sleeve, a limiting hole is provided on one side of the bottom-lifting cylinder sleeve and the bottom-lifting jack, and a pin shaft is installed inside the limiting hole.

[0014] Further, a spherical head is provided at one end of the bottom-lifting jack away from the bottom-lifting cylinder sleeve. A concave hemispherical base is sleeved outside the spherical head. A concave hemispherical gland is provided on the side of the concave hemispherical base close to the support platform plate. Screws are installed between the concave hemispherical gland and the concave hemispherical base.

[0015] Further, the side of the concave hemispherical base away from the concave hemispherical gland is fixed to the ship-shaped bottom plate.

[0016] Further, an emulsion pump is installed on the surface of the support platform plate. An oil injection device is installed inside the emulsion pump. A check valve I is installed at one end of the oil injection device away from the emulsion pump. A check valve II is installed at one end of the oil injection device close to the emulsion pump.

[0017] Further, the triple-extension jack, the bottom-lifting jack, and the drive motor are all connected to the hydraulic control unit.

[0018] Compared with the prior art, the present utility model has the following beneficial effects:

[0019] By providing a crawler moving unit for the movement of the entire temporary support bracket, and through the cooperation of the triple-extension jack and the ship-shaped top plate, and the cooperation of the connecting plate I and the ship-shaped bottom plate, it is possible to prevent the crawler chassis from directly supporting the bottom of the roadway during the support process of the bracket, reducing the possibility of damage to the crawler chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the front view of the present utility model;

[0021] Figure 2 is the side view of the present utility model;

[0022] Figure 3 is the electro-hydraulic control diagram of the present utility model;

[0023] Figure 4 is Figure 1 the enlarged view of A in

[0024] The reference numerals in the drawings respectively represent: 1, crawler chassis; 2, support platform plate; 3, triple-extension jack; 4, bottom-lifting jack; 5, ship-shaped top plate; 6, connecting plate I; 7, drive motor; 8, ship-shaped bottom plate; 9, spherical head; 10, concave hemispherical base; 11, concave hemispherical gland; 12, screw; 13, connecting plate II; 14, lower cylinder sleeve; 15, upper cylinder sleeve; 16, bottom-lifting cylinder sleeve; 17, pin shaft; 18, manual reversing valve; 19, motor; 20, emulsion pump; 21, emulsion tank; 22, oil injection device; 23, filter I; 24, three-position four-way valve group; 25, check valve I; 26, flow dividing valve; 27, liquid inlet; 28, liquid return port; 29, check valve II; 30, filter II; 31, drive wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1-4 , which includes four groups of symmetrically arranged drive wheels 31, a crawler chassis 1, which is divided into two groups and installed outside the drive wheels 31; a drive motor 7, installed inside the drive wheels 31, and when combined with the drive wheels 31, it is equivalent to the four-wheel drive of an automobile; a second connecting plate 13, installed on the outer shell of the drive motor 7; a first connecting plate 6, fixed on the top of the drive motor 7; a support platform plate 2, fixed on the top of the first connecting plate 6; the crawler chassis 1, the support platform plate 2, the first connecting plate 6, the drive motor 7 and the second connecting plate 13 form a crawler moving unit, and a support bracket unit, installed above the support platform plate 2.

[0027] The support bracket unit includes a triple-extension jack 3, a boat-shaped top plate 5, and a lower cylinder sleeve 14 surrounding the lower cylinder sleeve 14. Among them, a lower cylinder sleeve 14 is welded to the surface of the support platform plate 2 away from the first connecting plate 6. A triple-extension jack 3 is installed inside the lower cylinder sleeve 14. The top of the triple-extension jack 3 is connected to an upper cylinder sleeve 15. A boat-shaped top plate 5 is welded to the surface of the upper cylinder sleeve 15 away from the lower cylinder sleeve 14. Two triple-extension jacks 3 are used side by side, making the support bracket unit more stable. The boat-shaped top plate 5 facilitates the sliding of the support bracket on the roadway roof and reduces the frictional resistance.

[0028] The surface of the support platform plate 2 is provided with mounting holes, and the mounting holes are located on both sides close to 02 and close to 07. Above the mounting holes, a bottom-lifting cylinder sleeve 16 is fixed. Inside the bottom-lifting cylinder sleeve 16, a bottom-lifting jack 4 is installed, and the telescopic end of the bottom-lifting jack 4 faces downward. A limit hole is provided on one side of the bottom-lifting cylinder sleeve 16 and the bottom-lifting jack 4, and a pin shaft 17 is installed in the limit hole. The bottom-lifting jack 4 is connected to the bottom-lifting cylinder sleeve 16 through the pin shaft 17. One end of the bottom-lifting jack 4 away from the bottom-lifting cylinder sleeve 16 is provided with a spherical head 9. A concave hemispherical base 10 is sleeved outside the spherical head 9. On the side of the concave hemispherical base 10 close to the support platform plate 2, a concave hemispherical gland 11 is provided. Screws 12 are installed between the concave hemispherical gland 11 and the concave hemispherical base 10. The concave hemispherical base 10 is connected to the concave hemispherical gland 11 through the screws 12, so that the spherical head 9 is restricted between the concave hemispherical base 10 and the concave hemispherical gland 11. The side of the concave hemispherical base 10 away from the concave hemispherical gland 11 is fixed to the boat-shaped bottom plate 8. Through the bottom-lifting jack 4, the boat-shaped bottom plate 8, the spherical head 9, the concave hemispherical base 10, the concave hemispherical gland 11, the screws 12, the bottom-lifting cylinder sleeve 16 and the pin shaft 17, a bottom-lifting unit can be formed. When the concave hemispherical base 10 and the concave hemispherical gland 11 are connected and fixed through the screws 12, the spherical head 9 can rotate between the concave hemispherical base 10 and the concave hemispherical gland 11, and at the same time is connected to the boat-shaped bottom plate 8. When the roadway crawler mobile temporary support bracket needs to support, the piston rod of the bottom-lifting jack 4 extends, and the spherical head 9 abuts against the concave hemispherical base 10, that is, abuts against the boat-shaped bottom plate 8. The gravity of the entire roadway crawler mobile temporary support bracket is borne on the boat-shaped bottom plate 8, so that the crawler chassis 1 does not bear the gravity; when the roadway crawler mobile temporary support bracket needs to move, the triple-extension jack 3 retracts, causing the boat-shaped roof 5 to lower, and finally the boat-shaped roof 5 drops to the lowest position; at the same time, the piston rod of the bottom-lifting jack 4 contracts. Since the spherical head 9 is inside the concave hemispherical base 10, that is, the boat-shaped bottom plate 8 can be driven to move upward, so that the crawler chassis 1 touches the ground, and the crawler chassis 1 is started, so that the roadway crawler mobile temporary support bracket can move.

[0029] An emulsion pump 20 is installed on the surface of the support platform plate 2. An oil injection device 22 is installed inside the emulsion pump 20. The oil injection device can be an oil injection gun, an oil injector or an oil injection pump. One end of the oil injection device 22 away from the emulsion pump 20 is installed with a check valve I 25, and one end of the oil injection device 22 close to the emulsion pump 20 is installed with a check valve II 29. The check valve I 25 can effectively prevent the emulsion from flowing into the oil injection device 22, and at the same time the check valve II 29 also effectively prevents the grease in the oil injection device 22 from flowing into the emulsion.

[0030] The triple-extension jack 3, the floor-lifting jack 4, and the drive motor 7 are all connected to the hydraulic control unit, which is used to control the hydraulics of the crawler-mounted temporary support bracket for the entire roadway. Operating the three-position four-way valve group 24 can achieve the movement of the crawler-mounted temporary support bracket for the roadway, including forward movement, backward movement, turning, and stopping; it can also achieve the support function of the crawler-mounted temporary support bracket for the roadway. The hydraulic control unit includes a manual reversing valve 18, a motor 19, an emulsion pump 20, an emulsion tank 21, an oil injection device 22, a filter 1 23, a three-position four-way valve group 24, a check valve 1 25, a flow divider valve 26, a liquid inlet 27, a liquid return port 28, a check valve 2 29, and a filter 2 30. When controlling the crawler movement through the hydraulic control unit, start the motor 19, and the emulsion pump 20 starts to work. The emulsion enters from the liquid inlet 27 and exits from the liquid return port 28, supplying liquid outward. The liquid return port 28 is a two-position three-way valve. When it is set to the first position, the crawler chassis 1 can move; the triple-extension jack 3 and the floor-lifting jack 4 of the support bracket cannot operate; conversely, the manual reversing valve 18 is a two-position three-way valve. When it is set to the second position, the crawler chassis 1 cannot move; the triple-extension jack 3 and the floor-lifting jack 4 of the support bracket can operate. When the crawler-mounted temporary support bracket for the roadway is in the normal support state or after stopping the support work, use the oil injection device 22 to inject grease into the cavity of the drive motor 7 on the crawler chassis 1, so that the drive motor 7 is filled with grease to prevent the drive motor 7 from rusting due to the long-term presence of emulsion (containing water). The filter 1 23 is the filter for the emulsion liquid inlet 27, and the filter 2 30 is the filter for the emulsion liquid return port 28.

[0031] Working principle: The hydraulic control unit controls the crawler movement unit to drive the entire device to move. When the crawler-mounted temporary support bracket for the roadway needs to provide support, extend the triple-extension jack 3 to raise the boat-shaped roof 5. Eventually, the boat-shaped roof 5 abuts against the top of the roadway. While the boat-shaped roof 5 is being lifted, extend the piston rod of the floor-lifting jack 4 so that the spherical head 9 abuts against the concave hemispherical base 10, that is, against the boat-shaped bottom plate 8, making the boat-shaped bottom plate 8 lower than the crawler chassis 1. Thus, the entire weight of the crawler-mounted temporary support bracket for the roadway is borne by the boat-shaped bottom plate 8, and the crawler chassis 1 does not bear the weight. When the crawler-mounted temporary support bracket for the roadway needs to move, retract the triple-extension jack 3 to lower the boat-shaped roof 5 until it reaches the lowest position; at the same time, retract the piston rod of the floor-lifting jack 4. Since the spherical head 9 is inside the concave hemispherical base 10, the spherical head 9 can drive the boat-shaped bottom plate 8 to move upward through the concave hemispherical base 10, so that the crawler chassis 1 can touch the ground. Start the crawler chassis 1 to enable the crawler-mounted temporary support bracket for the roadway to move.

[0032] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A crawler mobile temporary support bracket for underground coal mine roadways, comprising four groups of symmetrically arranged drive wheels (31). It is characterized in that It includes: A crawler chassis (1), which is divided into two groups and installed on the outside of the drive wheels (31). A drive motor (7), installed inside the drive wheels (31), and when combined with the drive wheels (31), it is equivalent to the four-wheel drive of an automobile. A second connecting plate (13), installed on the outer shell of the drive motor (7). A first connecting plate (6), fixed on the top of the drive motor (7). A support platform plate (2), fixed on the top of the first connecting plate (6). A support bracket unit, installed above the support platform plate (2).

2. The crawler-mounted temporary support bracket for underground coal mine roadways according to claim 1, characterized in that: The support bracket unit includes a triple-extension jack (3), a boat-shaped roof plate (5), and a lower cylinder sleeve (14) surrounding the lower cylinder sleeve (14). Among them, on the side surface of the support platform plate (2) away from the first connecting plate (6), the lower cylinder sleeve (14) is welded. Inside the lower cylinder sleeve (14), the triple-extension jack (3) is installed. The top of the triple-extension jack (3) is connected to the upper cylinder sleeve (15). On the side surface of the upper cylinder sleeve (15) away from the lower cylinder sleeve (14), the boat-shaped roof plate (5) is welded.

3. A crawler-mounted temporary support bracket for underground coal mine roadways according to claim 1, characterized in that: On the surface of the support platform plate (2), mounting holes are provided. Above the mounting holes, a bottom-lifting cylinder sleeve (16) is fixed. Inside the bottom-lifting cylinder sleeve (16), a bottom-lifting jack (4) is installed. A limit hole is provided on one side of the bottom-lifting cylinder sleeve (16) and the bottom-lifting jack (4). A pin shaft (17) is installed in the limit hole.

4. A crawler-mounted temporary support bracket for underground coal mine roadways according to claim 3, characterized in that: One end of the bottom-lifting jack (4) away from the bottom-lifting cylinder sleeve (16) is provided with a spherical head (9). The outside of the spherical head (9) is sleeved with a concave hemispherical base (10). On the side of the concave hemispherical base (10) close to the support platform plate (2), a concave hemispherical gland (11) is provided. Screws (12) are installed between the concave hemispherical gland (11) and the concave hemispherical base (10).

5. A crawler-mounted temporary support bracket for underground coal mine roadways according to claim 4, characterized in that: The side of the concave hemispherical base (10) away from the concave hemispherical gland (11) is fixed to the boat-shaped bottom plate (8).

6. A crawler-mounted temporary support bracket for underground coal mine roadways according to claim 1, characterized in that: On the surface of the support platform plate (2), an emulsion pump (20) is installed. Inside the emulsion pump (20), an oil injection device (22) is installed. One end of the oil injection device (22) away from the emulsion pump (20) is installed with a one-way valve I (25). One end of the oil injection device (22) close to the emulsion pump (20) is installed with a one-way valve II (29).

7. A crawler-mounted temporary support bracket for underground coal mine roadways according to claim 3, characterized in that: The triple-extension jack (3), the bottom-lifting jack (4), and the drive motor (7) are all connected to the hydraulic control unit.

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