Spraying water supply device in drum-type coal mining machine and connecting structure thereof

Abstract

The utility model discloses a connecting structure of a spray water supply device in a drum-type coal mining machine. The connecting structure comprises a connector seat, a water supply device and a water supply device, wherein the connector seat is mounted at a water outlet of a rocker arm of the drum-type coal mining machine; one end of the rubber tube is used for being detachably connected with the joint seat; the hinge body is used for being quickly connected with the other end of the rubber tube; and the fixing piece is used for fixing the hinging body at the water inlet of the drum of the drum-type coal mining machine. The connecting structure is simple in structure, convenient to use and capable of being bent according to conditions, the distance after connection is easy to control, great convenience is brought to field installation and debugging, cost is reduced, and disassembly and assembly efficiency is improved. In addition, the utility model further provides an inner spray water supply device of the drum-type coal mining machine with the connecting structure.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining machines, in particular to an internal spray water supply device of a drum type coal mining machine and a connection structure thereof. Background Art

[0002] The drum coal shearer is an important equipment in coal mine production. During the coal mining operation, the internal spray water supply device is used to spray the coal mining face and the coal shearer itself to achieve the functions of dust reduction, cooling, lubrication, and fire prevention.

[0003] In the spray water supply device in the prior art coal mining machine, a connecting pipe is used to connect the water inlet of the coal mining machine drum and the water outlet of the coal mining machine rocker arm. That is, one end of the connecting pipe is connected to the joint seat at the water outlet of the coal mining machine rocker arm, and the other end is connected to the hinge seat at the water inlet of the coal mining machine drum, so as to provide water from the rocker arm water distribution plate to the drum for spraying.

[0004] Among them, the connecting pipe can be a steel pipe or a rubber hose. If a steel pipe is used, the two ends of the steel pipe are connected to the joint seat and the hinge seat by a U-shaped pin, which has strict requirements on the installation and processing dimensions of each part, and the steel pipe cannot be bent, so the adaptability is very poor. If a rubber hose is used, the two ends of the rubber hose are connected to the joint seat and the hinge seat by a quick male joint and a U-shaped pin. When the distance between the water outlet of the coal mining machine rocker arm and the water inlet of the drum is close, due to the inevitable processing errors of each part and the error of the rubber hose pressing length, it is difficult to accurately control the installation distance of the rubber hose. For example, when the rubber hose is longer than the required length, due to the high hardness of the shorter ordinary steel wire braided or steel wire wound rubber hose, it is difficult to bend. Therefore, when the rubber hose is connected to the water outlet of the rocker arm and the water inlet of the drum, the rubber hose and the U-shaped pin are difficult to install; and when the rubber hose is shorter than the required length, it will be too long to be installed. The above two reasons lead to extremely high requirements for the pressing length of the rubber hose during manufacturing, which increases costs and reduces efficiency. Summary of the invention

[0005] The purpose of the utility model is to solve the above-mentioned problems and to provide a spray water supply device in a drum-type coal mining machine and a connection structure thereof. The connection structure has a simple structure and is easy to use. It can be bent according to the situation. The distance after connection is easy to control, which brings great convenience to on-site installation and debugging, reduces costs, and improves disassembly and assembly efficiency.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model provides a connection structure of a spray water supply device in a drum-type coal mining machine, including: a joint seat for installation at the water outlet of the rocker arm of the drum-type coal mining machine; a hose with one end for detachable connection with the joint seat; an articulated body for quick connection with the other end of the hose; and a fixing piece for fixing the articulated body at the water inlet of the drum of the drum-type coal mining machine.

[0007] Preferably, the hose comprises: a steel wire braided hose; a first compression sleeve and a second compression sleeve respectively arranged at both ends of the steel wire braided hose; an ordinary male connector arranged at the end of the first compression sleeve away from the steel wire braided hose, which is detachably connected to the connector seat; a special male connector arranged at the end of the second compression sleeve away from the steel wire braided hose, which is detachably connected to the hinged body; wherein the steel wire braided hose, the first compression sleeve, the second compression sleeve, the ordinary male connector and the special male connector are pressed into one body.

[0008] Preferably, the special male connector comprises: a connector body in the shape of a stepped shaft, the outer diameter of one end of which contacts the second compression sleeve is larger than the outer diameter of the other end away from the second compression sleeve; and an annular groove arranged on the outer wall of the connector body adjacent to the other end.

[0009] Preferably, it also includes a retaining ring disposed in the annular groove of the dedicated male connector.

[0010] Preferably, it also includes an O-ring disposed in the annular groove of the dedicated male connector.

[0011] Preferably, the hinged body has a countersunk hole extending axially in the center thereof for plugging with the special male connector, and a through hole for connecting with the fixing member is formed in the side wall thereof.

[0012] In addition, the utility model also provides a spray water supply device in a drum-type coal mining machine, which includes the connection structure as described above.

[0013] Compared with the prior art, the spray water supply device in the drum-type coal mining machine and its connection structure of the utility model have the following advantages:

[0014] 1. The connection structure of the spray water supply device in the drum-type coal mining machine of the utility model has a simple structure and is easy to use. It can be bent according to the situation, and the distance after connection is easy to control, which brings great convenience to on-site installation and commissioning, reduces costs, and improves disassembly and assembly efficiency.

[0015] The utility model is described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the hose of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the hinged body of the utility model;

[0018] Figure 3 It is a partial structural schematic diagram of a spray water supply device in a drum-type coal mining machine adopting the connection structure of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the special male connector of the utility model. DETAILED DESCRIPTION

[0020] like Figure 1-Figure 3 As shown, there are schematic diagrams of the structure of the hose, the hinged body and the connection of the spray water supply device in the drum-type coal mining machine using the connection structure of the utility model. It can be seen from the figure that the connection structure of the spray water supply device in the drum-type coal mining machine of the utility model includes: a joint seat 4 for installation at the water outlet of the rocker arm of the drum-type coal mining machine; a hose 2 with one end for detachable connection with the joint seat; an hinged body 1 for quick connection with the other end of the hose; and a fixing part 6 for fixing the hinged body at the water inlet of the drum of the drum-type coal mining machine.

[0021] Specifically, the utility model hose adopts Figure 1 The structure shown includes: a steel wire braided hose 2.4, which can adopt the high-pressure steel wire braided hose of the prior art; a first compression sleeve 2.6 and a second compression sleeve 2.7 respectively arranged at both ends of the steel wire braided hose; an ordinary male connector 2.5 arranged at the end of the first compression sleeve away from the steel wire braided hose, which is detachably connected to the connector seat; a special male connector 2.3 arranged at the end of the second compression sleeve away from the steel wire braided hose, which is detachably connected to the hinged body; wherein, the two ends of the steel wire braided hose and the first compression sleeve and the second compression sleeve, the first compression sleeve and the ordinary male connector, the second compression sleeve and the special male connector are pressed by special hose pressing equipment to form an integrated hose.

[0022] Among them, Figure 4 As shown, the special male connector of the utility model comprises: a connector body 2.3 in the shape of a stepped shaft, the outer diameter of one end of which contacts the second compression sleeve is larger than the outer diameter of the other end away from the second compression sleeve; and an annular groove 231 arranged on the outer wall of the connector body near the other end.

[0023] During assembly, the end of the special male connector with the annular groove is inserted into the hinge body, and the insertion length can be determined according to actual conditions. In order to prevent the special male connector from falling off and maintain sealing after the special male connector is inserted into the hinge body, the utility model arranges a retaining ring 2.2 and an O-ring 2.1 in the annular groove of the special male connector.

[0024] Correspondingly, such as Figure 2 As shown, the center of the hinged body of the utility model is provided with a countersunk hole 11 extending axially for plugging with a special male connector, and a through hole 12 for connecting with a fixing member is provided on the side wall, and the through hole is connected with the countersunk hole. When designing, the countersunk hole adopts a stepped countersunk hole, and the diameter of the countersunk hole at the point where it communicates with the through hole is larger than the diameter of the plugging hole for plugging with the special male connector, and the diameter of the plugging hole is adapted to the diameter of the smaller diameter section of the special male connector.

[0025] The fixing member of the utility model can be a bolt, and correspondingly, the through hole of the hinge body can be a threaded hole adapted to the bolt. The smaller diameter hole in the stepped countersunk hole of the hinge body is comparable in size to the through hole of the special male connector, the through hole of the second compression sleeve, the through hole of the hose, the through hole of the first compression sleeve, and the through hole of the common male connector, so as to form a channel for smooth flow of water supply after being connected.

[0026] Among them, the common joint and the joint seat of the utility model both adopt the structure of the prior art, and their structures are not described in detail here.

[0027] In addition to providing the connection structure of the spray water supply device in the drum type coal mining machine, the utility model also provides a spray water supply device in the drum type coal mining machine with the connection structure.

[0028] When the connection structure of the utility model is used to connect the water inlet 8 of the coal mining machine drum and the water outlet 7 of the coal mining machine rocker arm, the gasket 5 is set outside the joint seat, and the small end of the joint seat is threadedly connected to the water outlet 7 of the coal mining machine rocker arm. The hinged body is fixed to the water inlet of the coal mining machine drum by bolts. During assembly, a combination gasket can be used at the same time. The main function of the combination gasket is to play a sealing role to prevent pressure water leakage. Among them, the ordinary male joint of the hose (i.e. Figure 1 The double-dotted line frame in the middle) is connected to the joint seat by a U-shaped pin 3, and a retaining ring and an O-ring are first placed in the annular groove of the special male joint of the hose, and then the special male joint end of the hose with the retaining ring and the O-ring is inserted into the countersunk hole of the hinge body. After the above components are connected, the water from the rocker arm water distribution plate can be provided to the drum through the connection structure for the drum to spray.

[0029] Among them, when the distance between the joints at both ends of the hose is relatively close (i.e., when the distance between the water inlet of the coal mining machine drum and the water outlet of the coal mining machine rocker arm is relatively close), one end of the special male joint of the hose can be inserted into the hinged body first, and then the hose is pushed to connect the ordinary male joint end of the hose with the joint seat through the U-shaped pin. Compared with the traditional hose in which both ends are connected to the joint seat and the hinge seat respectively through the U-shaped pin, the special male joint of the utility model is connected to the hinged body by plugging, which greatly reduces the assembly difficulty when the water inlet of the coal mining machine drum and the water outlet of the coal mining machine rocker arm are relatively close. Compared with the traditional steel pipe, it also reduces the processing accuracy of the corresponding components, reduces the production cost, and improves the production efficiency.

[0030] In summary, compared with conventional hoses, the connection structure of the utility model can be used. Since the length of the special male connector extending into the hinged body can be determined according to actual conditions (a margin has been reserved in advance when designing the hose and the special male connector), it is only necessary to adjust the length of the special male connector extending into the hinged body during the assembly process so that the hose can be installed in the connector seat and the U-shaped pin can be installed smoothly. This can ensure that the hose can be installed in the required spray system without strong bending, reduce the extremely high requirements for the hose length during the hose pressing process, and facilitate disassembly and replacement.

[0031] Although the utility model is described in detail above, the utility model is not limited thereto, and technicians in this technical field can make modifications based on the principles of the utility model. Therefore, all kinds of modifications made according to the principles of the utility model should be understood to fall within the protection scope of the utility model.

Claims

1. A connection structure of a spray water supply device in a drum-type coal mining machine, characterized in that: include: A joint seat used for installation at the water outlet of the rocker arm of a drum-type coal mining machine; One end of the hose is used for detachable connection with the connector seat; A hinged body for quick connection with the other end of the hose; A fixing part used for fixing the hinged body at the water inlet of the drum of a drum-type coal mining machine.

2. The connection structure according to claim 1, characterized in that: The hose comprises: Wire braided hose; A first compression sleeve and a second compression sleeve are respectively arranged at both ends of the steel wire braided rubber hose; A common male connector disposed at the end of the first compression sleeve away from the steel wire braided hose, which is detachably connected to the connector seat; A special male connector is arranged on the end of the second compression sleeve away from the steel wire braided hose and is detachably connected to the hinged body; The steel wire braided rubber hose, the first compression sleeve, the second compression sleeve, the common male connector and the special male connector are pressed into one body.

3. The connection structure according to claim 2, characterized in that: The dedicated male connector comprises: The joint body is in the shape of a stepped shaft, and the outer diameter of one end of the joint body that contacts the second compression sleeve is larger than the outer diameter of the other end that is away from the second compression sleeve; An annular groove is provided on the outer wall of the joint body adjacent to the other end.

4. The connection structure according to claim 3, characterized in that: Also included is a retaining ring disposed in the annular groove of the dedicated male connector.

5. The connection structure according to claim 4, characterized in that: Also included is an O-ring disposed in the annular groove of the dedicated male connector.

6. The connection structure according to claim 5, characterized in that: The center of the hinged body is provided with a countersunk hole extending in the axial direction for plugging with the special male connector, and the side wall is provided with a through hole for connecting with the fixing piece.

7. A spray water supply device in a drum-type coal mining machine, characterized in that: Comprising a connection structure as described in any one of claims 1 to 6.

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