A concrete spraying head holding trolley for coal mines

Abstract

The utility model relates to the technical field of concrete construction, especially a coal mine concrete injection head clamping trolley, including the trolley, the middle part fixed mounting of trolley has the support pipe, the outside sliding connection of support pipe has a support sleeve, the outside rotation of support sleeve is connected with a rotating seat, the inside rotation of rotating seat is connected with a clamping sleeve. The utility model has the advantages of: the trolley can bear the weight of injection head and part of the shotcrete pipe during operation, directly solve the weight problem of injection head and part of the shotcrete pipe, the directional wheel and universal wheel under the condition of braking, offset or basically offset the reverse impact force produced in the injection head injection operation process, greatly reduce the operator's work physical consumption, the support pipe and support sleeve can realize height adjustment under the cooperation of adjusting pin, suitable for different height operators, and the physical requirement of operator can also be relaxed.

Description

Technical Field

[0001] This utility model relates to the field of concrete spraying construction technology, and in particular to a concrete spraying head clamping trolley for coal mines. Background Technology

[0002] Currently, in general concrete spraying operations, especially in manual concrete spraying operations in high-gas environments in coal mine roadways, handheld spray heads are commonly used for roadway surface concrete spraying. This requires the operator to hold the spray pipe and spray the nozzle towards the coal mine roadway walls and ceiling. During the spraying process, high-pressure air, concrete slurry, and water are passed through the pipe, and the position of the slurry spray point at the nozzle outlet is constantly moving and changing. The operator not only has to bear the weight of the spray head and part of the rubber hose, but also has to overcome the reverse impact force (i.e., swinging force or swaying force) generated by the high-pressure air, concrete slurry, and high-pressure water due to the change in the spray position. They also need to consciously and constantly change the spray point position. The labor intensity is extremely high, and it is necessary to frequently change personnel to continue the operation. The efficiency of the spraying operation is low.

[0003] To address this issue, this utility model proposes a concrete spraying head clamping trolley for coal mines. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a concrete spraying head clamping trolley for coal mines, in order to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of the present invention provides a concrete spraying head clamping trolley for coal mines, including a trolley, a support pipe fixedly installed on the middle of one side of the trolley, a support sleeve slidably connected to the outside of the support pipe, a rotating seat rotatably connected to the outside of the support sleeve, a clamping sleeve rotatably connected to the inside of the rotating seat, and a spraying head clamped inside the clamping sleeve.

[0007] Preferably, as described in any of the above embodiments, the trolley includes a base, four uprights are fixedly installed on the top of the base, an mounting plate is fixedly installed on the top of the four uprights, two directional wheels with braking function and two omnidirectional wheels with braking function are fixedly installed on the bottom of the base, and a handle is fixedly installed on the top of the mounting plate.

[0008] The technical effect achieved by adopting the above solution is: it facilitates mobility.

[0009] Preferably, in any of the above embodiments, the support tube has a plurality of adjustment holes on its exterior, the plurality of adjustment holes being linearly and evenly distributed, the support sleeve has a positioning hole on its exterior, an adjustment pin is inserted into the interior of the positioning hole, the exterior of the adjustment pin is inserted into the interior of one of the adjustment holes, and a cotter pin is inserted into the interior of the adjustment pin.

[0010] The technical effect achieved by adopting the above solution is that it facilitates height adjustment.

[0011] Preferably, in any of the above embodiments, a support shaft is fixedly installed on the top of the support sleeve, and two bearings are fixedly installed on the outside of the support shaft.

[0012] Preferably, in any of the above embodiments, a shim is snapped between the two bearings, and a shaft retainer is snapped onto the outside of the support shaft, with one side of the shaft retainer overlapping one side of one of the bearings.

[0013] Preferably, as described in any of the above embodiments, a mounting groove is provided in the middle of the bottom of the rotating seat, the inside of the mounting groove is fixedly installed on the outside of the bearing, and a connecting hole is provided on one side of the rotating seat.

[0014] Preferably, in any of the above solutions, a positioning bolt is threaded into the internal part of the connecting hole, and one side of the positioning bolt is engaged between the two bearings.

[0015] The technical effect achieved by adopting the above solution is: it facilitates left and right rotation and adjustment of the spray direction.

[0016] Preferably, in any of the above embodiments, a U-shaped groove is provided on both sides of the top of the rotating seat, a threaded hole is provided on one side of each of the two U-shaped grooves, a limiting screw is threaded into the interior of each of the two threaded holes, and the two U-shaped grooves 42 are arranged symmetrically.

[0017] Preferably, in any of the above solutions, a rotating pin is fixedly connected to each side of the clamping sleeve, and the outside of the two rotating pins is respectively inserted into the inside of the U-shaped groove.

[0018] Preferably, in any of the above schemes, the two rotating pins are symmetrically distributed.

[0019] The technical effect achieved by adopting the above scheme is to facilitate pitch angle adjustment.

[0020] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0021] The trolley designed in this invention can support the weight of the spray head and part of the spray pipe during operation, directly solving the weight problem of the spray head and part of the spray pipe, greatly reducing the labor intensity of the operator. When the directional wheels and universal wheels are braked, they offset or basically offset the reverse impact force generated during the spraying operation of the spray head, greatly reducing the physical exertion of the operator. The support pipe and support sleeve can be height adjusted with the help of the adjusting pin, which is suitable for operators of different heights and can also relax the requirements for the physical condition of the operator, thus ensuring the practicality of the device.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a half-sectional structural diagram from a first perspective according to an embodiment of the present utility model;

[0025] Figure 2 This is a half-sectional structural diagram from a second perspective according to an embodiment of the present invention;

[0026] Figure 3 This is a half-sectional structural diagram of the rotating seat according to an embodiment of the present utility model;

[0027] Figure 4 This is a structural schematic diagram of the second state according to an embodiment of the present invention.

[0028] In the diagram: 1-Trolley, 11-Base, 12-Column, 13-Mounting plate, 14-Directional wheel, 15-Universal wheel, 16-Handle, 2-Support tube, 21-Adjustment hole, 3-Support sleeve, 31-Adjustment pin, 32-Cotter pin, 33-Support shaft, 34-Bearing, 4-Rotating seat, 41-Positioning bolt, 42-U-groove, 43-Limit screw, 5-Clamping sleeve, 51-Rotating pin, 6-Spray head. Detailed Implementation

[0029] Example: Figures 1 to 4As shown, a concrete spraying head clamping trolley for coal mines includes a trolley 1. A support pipe 2 is fixedly installed on the middle of one side of the trolley 1. A support sleeve 3 is slidably connected to the outside of the support pipe 2. A rotating seat 4 is rotatably connected to the outside of the support sleeve 3. A clamping sleeve 5 is rotatably connected inside the rotating seat 4. A spraying head 6 is clamped inside the clamping sleeve 5. The spraying head 6 is a known tool for concrete spraying operations, and this utility model does not make any improvements. Technicians can select and implement it according to the scheme. The clamping sleeve 5 is installed on the outside of the existing spraying head 6, which is convenient for placing inside the U-shaped groove 42. The specific shape of the clamping sleeve 5 is not described in detail, as long as it can lock the spraying head 6. The key requirement for installing the spraying head 6 is that the center position of the total weight of the spraying head 6 and the connected spraying pipe is at or near the middle position of the rotating pins 51 on both sides of the clamping sleeve 5. This makes the operation of the spraying head 6 the most labor-saving. The principle is simple, and technicians can implement it in conjunction with the existing spraying head. The specific details are not described here.

[0030] The trolley 1 includes a base 11, on the top of which four columns 12 are fixedly installed. The columns 12 can increase the height of the foundation, reduce the length of the support pipe 2, and improve the stability of the connection. The base 11 and the mounting plate 13 can also place some tools needed for concrete spraying in coal mine roadways. The mounting plate 13 is fixedly installed on the top of the four columns 12. The bottom of the base 11 is fixedly installed with two directional wheels 14 with braking function and two universal wheels 15 with braking function. When the directional wheels 14 and universal wheels 15 are braked, the trolley 1 can offset or basically offset the reverse impact force generated during the spraying operation of the spray head 6, so as to reduce the physical exertion of the operator. The top of the mounting plate 13 is fixedly installed with a handle 15, which can be used to push the trolley 1 to adjust the working position.

[0031] The support tube 2 has several adjustment holes 21 on its outside. The adjustment holes 21 are the same size and are linearly and evenly distributed. The support sleeve 3 has a positioning hole on its outside. An adjustment pin 31 is inserted into the positioning hole. The outside of the adjustment pin 31 is inserted into the inside of one of the adjustment holes 21. Different adjustment holes 21 correspond to different installation heights of the support sleeve 3, thereby realizing the height adjustment of the spray head 6. The structure is simple and the technicians can clearly understand this part of the technology. A cotter pin 32 is inserted into the inside of the adjustment pin 31. The cotter pin 32 can prevent the adjustment pin 31 from falling off under non-human operation.

[0032] A support shaft 33 is fixedly installed on the top of the support sleeve 3, and two bearings 34 are fixedly installed on the outside of the support shaft 33. The bearings 34 can improve the flexibility of rotation and make it easier to use.

[0033] A gasket (known technology) is snapped between the two bearings 34, and a shaft retainer (known technology) is snapped onto the outside of the support shaft 33. One side of the shaft retainer overlaps one side of one of the bearings 34 to limit the bearing 34. This part of the technology is mature and those skilled in the art can implement it according to the solution.

[0034] A mounting groove is provided in the middle of the bottom of the rotating seat 4. The bearing 34 is fixedly installed inside the mounting groove. A connecting hole is provided on one side of the rotating seat 4.

[0035] The internal thread of the connecting hole has a positioning bolt 41. One side of the positioning bolt 41 is engaged between the two bearings 34. By inserting one side of the positioning bolt 41 between the two bearings 34, the rotating seat 4 can be further positioned, preventing vibration during operation from causing the mounting groove to detach from the outside of the bearing 34.

[0036] A U-shaped groove 42 is provided on both sides of the top of the rotating seat 4. A threaded hole is provided on one side of each of the two U-shaped grooves 42. A limit screw 43 is threaded into the interior of each of the two threaded holes. The limit screw 43 can limit the rotating pin 51 and prevent the rotating pin 51 from jumping out of the U-shaped groove 42. The two U-shaped grooves 42 are arranged symmetrically to ensure that the pitch angle can be easily adjusted.

[0037] A rotating pin 51 is fixedly connected to both sides of the clamping sleeve 5. The outside of the two rotating pins 51 is inserted into the inside of the U-shaped groove 42, and the clamping sleeve 5 is installed inside the U-shaped groove 42 through the rotating pins 51.

[0038] The two rotating pins 51 are symmetrically distributed.

[0039] A concrete spraying head for coal mines clamps a small cart; its working principle is as follows:

[0040] 1) The weight of the spray head 6 (including part of the spray pipe) is supported by the clamping sleeve 5, and the combined weight is transferred to the upper two U-shaped grooves 42 of the rotating seat 4. The combined weight of the rotating seat 4 is evenly distributed and loaded onto the bearing 34. The load is then transferred to the support sleeve 3 through the bearing 34, to the adjusting pin 31 through the support sleeve 3, to the support tube 2 through the adjusting pin 31, to the mounting plate 13 of the trolley 1, to the column 12 and the base 11, to the directional wheel 14 and the universal wheel 15, and finally to the working ground.

[0041] 2) Regardless of whether the operator holds the spray head 6, and regardless of whether there are reverse impact forces (swinging force and throwing force) generated in the left, right, front and back and downward during the spraying concrete operation, the above loading process is valid. With the braked directional wheel 14 and the braked universal wheel 15 in the braking state, the trolley can offset or nearly offset the reverse impact forces generated in the left, right and front and back spraying operation, so that the operator can complete the concrete spraying operation of the spray head with less physical strength.

[0042] 3) When the height of the spray head 6 needs to be adjusted, the height of the spray head 6 is adjusted by the positioning hole on the support sleeve 3 and the adjustment hole 21 set up in the upper and lower offset of the support tube 2. The adjustment pin 31 and the cotter pin 32 are connected and fixed. Therefore, it can meet the needs of operators of different heights and can achieve rapid height adjustment.

[0043] 4) When the spray head 6 needs to be adjusted in angle, the clamping sleeve 5 has rotating pins symmetrically distributed on the same axis, which complete the rotation in the U-shaped groove 42 (in the vertical plane). In this embodiment, the rotation angle reaches 65° upward and downward. However, this utility model is not limited to this embodiment. By improving the structure of the rotating seat 4, the rotation angle can reach 90° upward and downward. With the position movement of the trolley 1, the spraying operation covers the spraying surface of the tunnel. The rotating seat 4 rotates 360° around the bearing 34 (in the horizontal plane). Therefore, the two-dimensional rotating spray head 6 meets the requirements of the spraying operation.

[0044] 5) During operation, adjust the height of the spray head 6 to a position that is easy for the operator to operate and requires less effort. Simulate the normal spraying action of holding the spray head 6, such as swinging left and right, swinging up and down, and swinging in a spiral trajectory to simulate the movement of the spray point and change the position of the spray point. Combine this with moving the trolley 1 to a suitable position. After confirming that the operation is basically the same as usual, put the four wheels of the trolley 1 in the brake position and start the normal actual spraying operation. According to the current spraying operation state of holding the trolley, the operator only needs to provide the moving friction force of the spray point position to complete the spraying action of the spray head. This completely changes the working state of holding the spray head. After comparison, the operator will find it easy to complete the spraying operation.

[0045] Compared with the prior art, the present invention has the following advantages:

[0046] The trolley 1 of this invention can bear the weight of the spray head 6 and part of the spray pipe during operation, directly solving the weight problem of the spray head 6 and part of the spray pipe, greatly reducing the labor intensity of the operator. The directional wheel 14 and the universal wheel 15, when braking, offset or basically offset the reverse impact force generated by the spray head 6 during the spraying operation, greatly reducing the physical exertion of the operator. The support pipe 2 and the support sleeve 3 can be height adjusted with the cooperation of the adjusting pin 31, which is suitable for operators of different heights and can also relax the requirements for the physical condition of the operator, ensuring the practicality of the device.

Claims

1. A concrete spraying head clamping trolley for coal mines, characterized in that: Includes a trolley (1), a support tube (2) is fixedly installed in the middle of one side of the trolley (1), a support sleeve (3) is slidably connected to the outside of the support tube (2), a rotating seat (4) is rotatably connected to the outside of the support sleeve (3), a clamping sleeve (5) is rotatably connected to the inside of the rotating seat (4), and a spray head (6) is snapped into the inside of the clamping sleeve (5).

2. The concrete spraying head clamping trolley for coal mines according to claim 1, characterized in that: The trolley (1) includes a base (11), four columns (12) are fixedly installed on the top of the base (11), and a mounting plate (13) is fixedly installed on the top of the four columns (12). Two directional wheels (14) with braking function and two universal wheels (15) with braking function are fixedly installed on the bottom of the base (11). A handle (16) is fixedly installed on the top of the mounting plate (13).

3. A concrete spraying head clamping trolley for coal mines according to claim 2, characterized in that: The support tube (2) has several adjustment holes (21) on its outside. The adjustment holes (21) are linearly and evenly distributed. The support sleeve (3) has a positioning hole on its outside. An adjustment pin (31) is inserted into the inside of the positioning hole. The outside of the adjustment pin (31) is inserted into the inside of one of the adjustment holes (21). A cotter pin (32) is inserted into the inside of the adjustment pin (31).

4. A concrete spraying head clamping trolley for coal mines according to claim 3, characterized in that: A support shaft (33) is fixedly installed on the top of the support sleeve (3), and two bearings (34) are fixedly installed on the outside of the support shaft (33).

5. A concrete spraying head clamping trolley for coal mines according to claim 4, characterized in that: A shim is snapped between the two bearings (34), and a circlip is snapped onto the outside of the support shaft (33), with one side of the circlip overlapping one side of one of the bearings (34).

6. A concrete spraying head clamping trolley for coal mines according to claim 5, characterized in that: A mounting groove is provided in the middle of the bottom of the rotating seat (4), and the inside of the mounting groove is fixedly installed on the outside of the bearing (34). A connecting hole is provided on one side of the rotating seat (4).

7. A concrete spraying head clamping trolley for coal mines according to claim 6, characterized in that: The internal thread of the connecting hole is connected to a positioning bolt (41), one side of which is engaged between two bearings (34).

8. A concrete spraying head clamping trolley for coal mines according to claim 7, characterized in that: A U-shaped groove (42) is provided on both sides of the top of the rotating seat (4), and a threaded hole is provided on one side of each of the two U-shaped grooves (42). A limiting screw (43) is threaded into the interior of each of the two threaded holes, and the two U-shaped grooves (42) are arranged symmetrically.

9. A concrete spraying head clamping trolley for coal mines according to claim 8, characterized in that: A rotating pin (51) is fixedly connected to each side of the clamping sleeve (5), and the outside of the two rotating pins (51) is respectively inserted into the inside of the U-shaped groove (42).

10. A concrete spraying head clamping trolley for coal mines according to claim 9, characterized in that: The two rotating pins (51) are symmetrically distributed.

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