Explosion-proof front-arranged positive-discharging cement mixer for coal mine

Abstract

The utility model relates to an anti-explosion front positive-discharging cement mixer truck for a coal mine, which belongs to the technical field of concrete mixing equipment and comprises a mixer truck body, a rotatable tank is arranged on the mixer truck body, a hydraulic pump is arranged at one end of the tank, and a feeding and discharging structure with a double-layer sealing structure is arranged at one end, close to a cab of the mixer truck body, of the tank. The hydraulic pump is arranged at the end, away from the feeding and discharging structure, of the tank. Due to the fact that the feeding and discharging structure is arranged in the front, a driver can control the hydraulic discharging position in the whole process in a cab, pouring is achieved while walking is carried out, the device is particularly suitable for mine construction, and the operation time of miners is saved. In addition, a mine driver can better observe the construction state in the discharging process, blind areas are reduced, the safety of construction operation is improved, the driver can conduct discharging work in a cab without getting off the vehicle, the personnel safety is guaranteed, the feeding and discharging structure is of a double-layer sealing structure, the sealing effect is better, and mud throwing is better prevented.

Description

Technical Field

[0001] The utility model relates to an explosion-proof front-mounted positive-unloading cement mixer truck for coal mines, belonging to the technical field of concrete mixing equipment. Background Art

[0002] Cement mixer trucks are commonly used equipment in coal mines. Cement tank trucks usually use compressed air to fluidize the cement powder in the cement tank body, and then transport it through the discharge valve and pipeline. The cement mixer trucks currently used in the mine are generally rear-discharge cement mixer trucks, and the discharge port is located at the rear of the vehicle. When the vehicle starts working, it requires a larger space to operate, especially in narrow underground tunnels. It may be necessary to adjust the position of the vehicle several times to accurately discharge the material, which will result in low efficiency. In addition, when unloading, personnel need to get off the vehicle to unload, which increases the hidden danger of personnel safety. In addition, the sealing of the inlet and outlet is not good, which causes the cement material to throw mud during unloading or operation. Utility Model Content

[0003] The utility model provides an explosion-proof front-mounted positive-unloading cement mixer truck for coal mines, which solves the problems in the above-mentioned background technology.

[0004] The utility model relates to an explosion-proof front-mounted positive unloading cement mixer truck for coal mines, comprising a mixer truck body. A rotatable tank body is arranged on the mixer truck body, a hydraulic pump is arranged at one end of the tank body, an inlet and outlet structure with a double-layer sealing structure is arranged at one end of the tank body close to a cab of the mixer truck body, and the hydraulic pump is arranged at one end of the tank body away from the inlet and outlet structure.

[0005] As a preferred embodiment, the inlet and outlet structure includes a tank flange arranged at the end of the tank body, a bearing is connected to the outside of the tank flange, a retaining ring is connected to the outside of the bearing, a cover plate is arranged on the outside of the retaining ring, a feed hopper and a discharge port are arranged on the cover plate, a closing mechanism is connected to the discharge port, a sealing gasket 1 is arranged between the tank flange and the bearing, and sealing gaskets 2 and 3 are arranged on both sides of the retaining ring. A retaining ring is added between the cover plate and the bearing, and sealing gaskets 2 and 3 are arranged on both sides of the retaining ring, respectively, and a double-layer sealing structure is adopted, so that the sealing effect is better.

[0006] As a preferred embodiment, the closing mechanism includes a sealing plate rotatably mounted on the cover plate and arranged outside the discharge port. A hydraulic cylinder is provided on the outside of the sealing plate, and the hydraulic cylinder is connected to a distribution valve to facilitate the control of opening the sealing plate for unloading.

[0007] As a preferred embodiment, a discharge shaft is fixed to the upper end of the sealing plate, ear plates are rotatably installed at both ends of the discharge shaft, the ear plates are fixed to the cover plate, a sealing pad is fixed to the inner wall of the sealing plate, a pin shaft 1 is rotatably installed on the outer wall of the sealing plate, the pin shaft 1 is fixed to the hydraulic cylinder, a pin shaft 2 is fixed to the upper end of the hydraulic cylinder, and the pin shaft 2 is rotatably installed on the feed hopper, the structure is simple, and it is easy to use.

[0008] As a preferred embodiment, a shield plate installed on the mixer truck body is provided on the side of the hydraulic pump away from the cab, a bending protection plate is provided on the upper end of the shield plate, the bending protection plate is above the hydraulic pump, a support frame is fixed to the inner bottom of the bending protection plate, and the support frame is fixed to the frame of the mixer truck body. The shield plate can protect the hydraulic pump, prevent the hydraulic pump from being damaged by falling objects from a high place, and prevent rain from falling on the hydraulic pump.

[0009] As a preferred embodiment, a maintenance opening is provided at the position of the shield plate corresponding to the hydraulic pump, and an inspection plate fixed on the shield plate is provided on the outer side of the maintenance opening to facilitate maintenance of the hydraulic pump.

[0010] As a preferred embodiment, a fixing frame is fixed on the feed hopper, and the fixing frame is fixed on the frame of the mixer truck body.

[0011] As a preferred embodiment, the front and rear sides of the shield plate are both provided with bent ribs.

[0012] As a preferred embodiment, the bending protective plate is inclined so that it is higher inside and lower outside. Water retaining edges are fixed to the top of the inner end and the tops of the front and rear sides of the bending protective plate to prevent rainwater on the bending protective plate from flowing down from the front, rear and inner sides.

[0013] As a preferred embodiment, the bottom of the guard plate is provided with a mounting flange fixed to the rear bumper of the mixer truck body by bolts, the inner end of the mounting flange is provided with a limiting flange downwardly limited on the inner wall of the rear bumper, the bottom of the mounting flange is provided with a positioning boss, and the top of the rear bumper is provided with a positioning blind hole. The limiting flange and the bolts cooperate to make the guard plate more firmly fixed, and the positioning boss and the positioning blind hole cooperate to quickly position and install the guard plate.

[0014] The utility model has the following beneficial effects:

[0015] Since the feeding and discharging structure is placed in front, the driver can control the position of the hydraulic unloading in the cab throughout the whole process, and realize pouring while walking, which is particularly suitable for mine construction and saves miners' working time. In addition, the mine driver can better observe the construction status during the unloading process, reduce blind spots, and improve the safety of construction operations. The driver can unload in the cab without getting off the car, ensuring the safety of personnel. The feeding and discharging structure adopts a double-layer sealing structure, which has a better sealing effect and better prevents mud throwing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0018] Figure 3 for Figure 1 Partial structure diagram Figure 1 ;

[0019] Figure 4 for Figure 1 Partial structure diagram Figure 2 ;

[0020] Figure 5 for Figure 2 Partial structure diagram Figure 1 ;

[0021] Figure 6 for Figure 2 Partial structure diagram Figure 2 ;

[0022] Figure 7 It is a schematic diagram of the three-dimensional split structure of the feeding and discharging structure;

[0023] Figure 8 It is a schematic diagram of the main cross-sectional structure of the feeding and discharging structure;

[0024] Fig. 9 It is a schematic diagram of the partial main structure of the shield plate;

[0025] Fig.10 for Fig. 9 Schematic diagram of some structures;

[0026] In the figure: 1. Truck mixer body; 2. Tank body; 3. Inlet and outlet structure; 301. Tank body flange; 302. Sealing gasket 1; 303. Bearing; 304. Sealing gasket 2; 305. Retaining ring; 306. Sealing gasket 3; 307. Feed hopper; 308. Pin 1; 309. Hydraulic cylinder; 310. Pin 2; 311. Sealing plate; 312. Discharge shaft; 313. Distribution valve; 314. Cover plate; 315. Fixing bracket; 316. Sealing pad; 4. Cab; 5. Hydraulic pump; 6. Bending protection plate; 7. Inspection plate; 8. Rear bumper; 9. Shield plate; 10. Installation flange; 11. Support frame; 12. Bending retaining edge; 13. Water retaining edge; 14. Limiting flange; 15. Positioning boss. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with embodiments.

[0028] Embodiment 1, as Figures 1 to 10 As shown, the utility model is an explosion-proof front-loading cement mixer for coal mines, comprising a mixer body 1, a rotatable tank body 2 is provided on the mixer body 1, a hydraulic pump 5 is provided at one end of the tank body 2, and an end of the tank body 2 close to a cab 4 of the mixer body 1 is provided with a feeding and discharging structure 3 with a double-layer sealing structure, and the hydraulic pump 5 is arranged at the end of the tank body 2 away from the feeding and discharging structure 3.

[0029] When the mixer truck body 1 is in normal operation, the tank body 2 rotates. When feeding, cement enters the tank body 2 from the feeding and discharging structure 3. When discharging, the feeding and discharging structure 3 is opened for discharging. Since the feeding and discharging structure 3 is located in front, the driver can control the position of the hydraulic unloading in the cab 4 throughout the whole process, and realize pouring while walking, which is particularly suitable for mine construction and saves miners' working time. In addition, the mine driver can better observe the construction status during the unloading process, reduce blind spots, and improve the safety of construction operations.

[0030] Embodiment 2, on the basis of embodiment 1, the material inlet and outlet structure 3 comprises a tank flange 301 arranged at the end of the tank body 2, a bearing 303 is connected to the outside of the tank flange 301, a retaining ring 305 is connected to the outside of the bearing 303, a cover plate 314 is arranged on the outside of the retaining ring 305, a feed hopper 307 and a material outlet are arranged on the cover plate 314, a sealing gasket 1 302 is arranged between the tank flange 301 and the bearing 303, and a sealing gasket 2 304 and a sealing gasket 3 306 are arranged on both sides of the retaining ring 305. When the material inlet and outlet structure 3 is installed, the outer ring of the bearing 303, the tank flange 301 and the sealing gasket 1 302 are connected by screws through the mounting holes on the outside of the outer ring of the bearing 303, and installed to the front of the tank body 2. Then, use screws to connect the sealing gasket 306, the retaining ring 305, and the sealing gasket 2 304 through the mounting holes on the outside of the cover plate 314, and install them on the mounting holes on the outside of the inner ring of the bearing 303. The rotation of the tank body 2 will drive the tank body flange 301, the sealing gasket 1 302, and the outer ring of the bearing 303 to rotate; at this time, the inner ring of the bearing 303, the sealing gasket 2 304, the retaining ring 305, the sealing gasket 3 306, and the cover plate 314 are all in a stationary state.

[0031] The sealing mechanism includes a sealing plate 311 arranged outside the discharge port and rotatably mounted on a cover plate 314, a hydraulic cylinder 309 is arranged outside the sealing plate 311, and the hydraulic cylinder 309 is connected to a distribution valve 313. The distribution valve 313 is a solenoid valve, and a control switch of the distribution valve 313 is arranged in the cab 4. The bearing 303 is a slewing bearing.

[0032] A discharge shaft 312 is fixed to the upper end of the sealing plate 311, and ear plates are rotatably installed at both ends of the discharge shaft 312, and the ear plates are fixed on the cover plate 314. A sealing pad 316 is fixed to the inner wall of the sealing plate 311, and a pin shaft 308 is rotatably installed on the outer wall of the sealing plate 311. The pin shaft 308 is fixed to the hydraulic cylinder 309, and a pin shaft 2 310 is fixed to the upper end of the hydraulic cylinder 309. The pin shaft 2 310 is rotatably installed on the feed hopper 307.

[0033] A shield plate 9 installed on the mixer truck body 1 is provided on the side of the hydraulic pump 5 away from the cab 4, and a bending protective plate 6 is provided on the upper end of the shield plate 9. The bending protective plate 6 is above the hydraulic pump 5. A support frame 11 is fixed to the inner bottom of the bending protective plate 6, and the support frame 11 is fixed to the frame of the mixer truck body 1.

[0034] The shield plate 9 is provided with an inspection opening at a position corresponding to the hydraulic pump 5 , and an inspection plate 7 fixed on the shield plate 9 is provided on the outer side of the inspection opening.

[0035] A fixing frame 315 is fixed on the feed hopper 307 , and the fixing frame 315 is fixed on the frame of the mixer truck body 1 .

[0036] The front and rear sides of the shield plate 9 are both provided with bent ribs 12 .

[0037] Embodiment 3, based on Embodiment 1 or 2, the bending protection plate 6 is tilted to be higher inside and lower outside, and a water retaining edge 13 is fixed to the inner end top and the front and rear side tops of the bending protection plate 6.

[0038] The bottom of the shield plate 9 is provided with a mounting flange 10 fixed to the rear bumper 8 of the mixer truck body 1 by bolts, the inner end of the mounting flange 10 is provided with a limiting flange 14 which is limited downward on the inner side wall of the rear bumper 8, the bottom of the mounting flange 10 is provided with a positioning boss 15, and the top of the rear bumper 8 is provided with a positioning blind hole. When installing the shield plate 9, the positioning boss 15 can be inserted into the positioning blind hole for quick positioning, which is convenient and quick to install.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0040] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. An explosion-proof front-loading cement mixer truck for coal mines, comprising a mixer truck body (1), a rotatable tank body (2) being provided on the mixer truck body (1), and a hydraulic pump (5) being provided at one end of the tank body (2), characterized in that: An inlet and outlet structure (3) with a double-layer sealing structure is provided at one end of the tank body (2) close to the cab (4) of the mixer truck body (1), and a hydraulic pump (5) is arranged at one end of the tank body (2) away from the inlet and outlet structure (3).

2. The explosion-proof front-loading cement mixer truck for coal mines according to claim 1, characterized in that: The material inlet and outlet structure (3) comprises a tank flange (301) arranged at the end of the tank body (2); a bearing (303) is connected to the outside of the tank flange (301); a retaining ring (305) is connected to the outside of the bearing (303); a cover plate (314) is arranged on the outside of the retaining ring (305); a material feed hopper (307) and a material outlet are arranged on the cover plate (314); a sealing gasket 1 (302) is arranged between the tank flange (301) and the bearing (303); and a sealing gasket 2 (304) and a sealing gasket 3 (306) are arranged on both sides of the retaining ring (305).

3. The explosion-proof front-loading cement mixer truck for coal mines according to claim 2, characterized in that: The sealing mechanism comprises a sealing plate (311) arranged outside the material outlet and rotatably mounted on a cover plate (314); a hydraulic cylinder (309) is provided outside the sealing plate (311); and the hydraulic cylinder (309) is connected to a distribution valve (313).

4. The explosion-proof front-loading cement mixer truck for coal mines according to claim 3, characterized in that: A discharge shaft (312) is fixed to the upper end of the sealing plate (311), ear plates are rotatably mounted on both ends of the discharge shaft (312), and the ear plates are fixed to the cover plate (314). A sealing pad (316) is fixed to the inner wall of the sealing plate (311), and a pin shaft 1 (308) is rotatably mounted on the outer wall of the sealing plate (311). The pin shaft 1 (308) is fixed to the hydraulic cylinder (309), and a pin shaft 2 (310) is fixed to the upper end of the hydraulic cylinder (309), and the pin shaft 2 (310) is rotatably mounted on the feed hopper (307).

5. The explosion-proof front-loading cement mixer truck for coal mines according to claim 1, characterized in that: A shield plate (9) mounted on the mixer truck body (1) is provided on the side of the hydraulic pump (5) away from the cab (4), a bending protection plate (6) is provided on the upper end of the shield plate (9), the bending protection plate (6) is located above the hydraulic pump (5), a support frame (11) is fixed to the inner bottom of the bending protection plate (6), and the support frame (11) is fixed to the frame of the mixer truck body (1).

6. The explosion-proof front-loading cement mixer truck for coal mines according to claim 5, characterized in that: The guard plate (9) is provided with an inspection opening at a position corresponding to the hydraulic pump (5), and an inspection plate (7) fixed to the guard plate (9) is provided on the outer side of the inspection opening.

7. The explosion-proof front-loading cement mixer truck for coal mines according to claim 2, characterized in that: A fixing frame (315) is fixed on the feed hopper (307), and the fixing frame (315) is fixed on the frame of the mixer truck body (1).

8. The explosion-proof front-loading cement mixer truck for coal mines according to claim 5, characterized in that: The front and rear sides of the shield plate (9) are both provided with bent retaining edges (12).

9. The explosion-proof front-loading cement mixer truck for coal mines according to claim 8, characterized in that: The bending protection plate (6) is arranged to be inclined so that it is higher inside and lower outside, and a water retaining edge (13) is fixed to the top of the inner end and the tops of the front and rear sides of the bending protection plate (6).

10. The explosion-proof front-loading cement mixer truck for coal mines according to claim 5, characterized in that: The bottom of the shield plate (9) is provided with a mounting flange (10) fixed to the rear bumper (8) of the mixer truck body (1) by bolts, the inner end of the mounting flange (10) is provided with a limit flange (14) which is limited downward on the inner side wall of the rear bumper (8), the bottom of the mounting flange (10) is provided with a positioning boss (15), and the top of the rear bumper (8) is provided with a positioning blind hole.

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