A horizontal-axis tunneling device and its spray distributor

Abstract

This invention relates to the field of tunneling equipment technology, specifically to a horizontal axis tunneling device and its spray distributor. The spray distributor of the horizontal axis tunneling device includes a rotating assembly for mounting to the cutting head and a fixed assembly for mounting to the main shaft of the cutting mechanism. The fixed assembly includes a distribution plate, a connecting shaft connected to the distribution plate, a water inlet seat, a force transmission sleeve, and an inner water sleeve. The rotating assembly includes a mating plate, with the inner water sleeve passing through the force transmission sleeve. Both ends of the inner water sleeve and the force transmission sleeve are respectively fitted with the connecting shaft and the water inlet seat insert, and are axially and radially floating. Both ends of the force transmission sleeve are anti-rotationally fitted with the connecting shaft and the water inlet seat, while both ends of the inner water sleeve are sealingly fitted with the connecting shaft and the water inlet seat and can rotate relative to each other. When the mating plate rotates relative to the distribution plate and rubs against it, the force transmission sleeve bears torque. The inner water sleeve will not undergo torsional deformation due to torque, and this will not affect the sealing rings installed at both ends of the inner water sleeve, thus contributing to reliable sealing.

Description

Technical Field

[0001] This invention relates to the field of tunneling equipment technology, specifically to a horizontal axis tunneling device and its spray distributor. Background Technology

[0002] The directional internal spraying technology of horizontal axis tunneling equipment is achieved through a specially designed fan-shaped spray distributor. High-pressure water is delivered to the fan-shaped spray distributor and then distributed to the corresponding nozzles on the cutting head, forming a fan-shaped spray area in front of the cutting head. The spray area does not rotate with the cutting head and always maintains a constant fan-shaped spray angle. This spraying method allows for targeted design of the spray area according to the working range of the cutting head of the tunneling equipment, ensuring that the area where the cutting head generates dust during the cutting process is covered by timely and effective spraying, preventing operators behind the cutting head from being sprayed with water mist.

[0003] Existing spray distributors for horizontal axis tunneling equipment, such as the rotary directional spray distribution mechanism disclosed in Chinese invention patent application CN111810154A, include an inner seat ring, an outer seat ring, a wear-resistant pad, a distribution plate, a floating pipe, and a water inlet seat. The inner seat ring, outer seat ring, and wear-resistant pad are fixed to each other and rotate together with the horizontal axis cutting mechanism. The inner and outer seat rings and the water inlet seat are respectively mounted on two relatively rotatable mechanisms. The water inlet seat is fixed, while the floating pipe... The front and rear ends are connected to the water inlet seat and the distribution plate, respectively, and both connections are sealed. The through holes in the water inlet seat and the through holes in the floating tube are sequentially connected to the water inlet holes in the distribution plate to form a water supply channel. Both the front and rear ends of the floating tube are machined with flat structures. The ends of the distribution plate and the water inlet seat that are connected to the floating tube are machined with irregularly shaped hole structures that conform to the corresponding flat structure of the floating tube, forming an anti-rotation connection. The flat structure can be used to transmit torque, ensuring that there is no relative rotation between the distribution plate and the water inlet seat, while not affecting the rotation. The outer race is designed to accommodate axial and radial floating and slight deflection. The front and rear portions of the outer race are respectively equipped with a central through-hole and a disc-shaped groove communicating with the central through-hole. The front and rear portions of the distribution plate are respectively a shaft-shaped portion and a disc-shaped portion, located within the central through-hole and the disc-shaped groove. A crescent-shaped water channel is provided on the rear end face of the disc-shaped portion. The shape, size, and position of the water channel should ensure that regardless of the circumferential position of the distribution plate relative to the wear pad, a portion of the first water-passing hole on the wear pad always communicates with the water channel. High-pressure water flows through the water supply... Water enters the water channel from the water inlet on the distribution plate, and then from the water channel into the first water inlet on the wear-resistant pad that is connected to the water channel. This leads water into the water channel corresponding to the first water inlet. The water channel then supplies water to the corresponding nozzles of the inner spray system installed on the inner seat ring. The nozzles can then spray. The remaining first water inlets that are not connected to the water channel are closed. The corresponding water channels and nozzles do not receive water supply and therefore do not spray outward, thus achieving directional fan-shaped spray.

[0004] The cutting mechanism of the horizontal axis tunneling equipment includes a reducer and a cutting head. The reducer supports and drives the cutting head to rotate, while the main shaft of the reducer does not rotate. The fixed part of the spray distributor is fixed to the main shaft, and the rotating part is fixed to the cutting head. The spray distributor is floatingly connected to the shaft-like parts of the water inlet seat and the distribution plate via floating pipes to adapt to slight changes in the posture of the cutting head relative to the main shaft of the cutting mechanism, while also being able to withstand torque. When the cutting mechanism is working, the distribution plate of the spray distributor is in close contact with the wear-resistant pad under water pressure, resulting in high friction. During the rotation of the wear-resistant pad, a relatively large torque is applied to the distribution plate. This torque is transmitted to the water inlet seat through the floating pipes. Since the water inlet seat is fixed to the main shaft, the distribution plate is prevented from rotating with it. In addition to transmitting torque, the floating pipe also needs to form a water channel. Therefore, in addition to the anti-rotation connection structure, it is also equipped with a sealing ring at both ends. Due to the large force, after long-term use, the floating pipe will undergo a certain amount of torsional deformation due to the torque, which will affect the part on which the sealing ring is installed, and is prone to sealing failure, affecting the sealing reliability of the spray distributor. Moreover, the sealing ring is easily damaged under complex loads, reducing its service life. Summary of the Invention

[0005] The purpose of this invention is to provide a spray distributor for a horizontal shaft tunneling device to solve the problem of unreliable sealing at the floating connection of the current spray distributor; the purpose of this invention is also to provide a horizontal shaft tunneling device to solve the above-mentioned problems.

[0006] The technical solution of the spray distributor for the horizontal shaft tunneling equipment of the present invention is as follows:

[0007] A spray distributor for a horizontal axis tunneling machine includes a rotating assembly for mounting to a cutting head and a fixed assembly for mounting to the main shaft of the cutting mechanism. The fixed assembly includes a distribution plate, a connecting shaft connected to the distribution plate, a water inlet seat, a force transmission sleeve, and an inner water sleeve. The rotating assembly includes a mating plate that cooperates with the distribution plate to supply water through the distribution plate and the mating plate into the internal water channel of the rotating assembly and spraying it out from the nozzle on the cutting head. The water inlet seat is used to fix it to the main shaft of the cutting mechanism. The inner water sleeve passes through the force transmission sleeve. The two ends of the inner water sleeve and the force transmission sleeve are respectively fitted with the connecting shaft and the water inlet seat insert and are axially and radially floating. The two ends of the force transmission sleeve are anti-rotationally fitted with the connecting shaft and the water inlet seat. The two ends of the inner water sleeve are sealedly fitted with the connecting shaft and the water inlet seat and can rotate relative to each other. The central holes of the inner water sleeve, the water inlet seat, and the connecting shaft cooperate to form a water supply channel for water to flow to the distribution plate. When the mating plate rotates relative to the distribution plate and rubs, the force transmission sleeve bears torque.

[0008] Furthermore, one end of the force transmission sleeve is fitted onto the connecting shaft, and the other end is inserted into the water inlet seat. The length of the inner water sleeve is greater than the length of the force transmission sleeve. One end of the inner water sleeve is inserted into the connecting shaft, and the other end is inserted into the water inlet seat.

[0009] Furthermore, an outer spring is fitted onto the force transmission sleeve, with one end of the outer spring abutting against one end of the force transmission sleeve that is fitted onto the connecting shaft, and the other end abutting against the water inlet seat.

[0010] Furthermore, an inner spring is installed between the inner water jacket and the water inlet seat. The inner spring is arranged along the axial direction of the inner water jacket to apply a force to the inner water jacket toward the side where the connecting shaft is located.

[0011] Furthermore, the outer circumferential surface of the inner water jacket and the inner circumferential surface of the force transmission jacket are spaced apart.

[0012] Furthermore, the water inlet seat includes a main body seat and a water inlet head threadedly connected to the main body seat. The water inlet head is provided with a water channel and is used to communicate with the water channel on the main shaft of the cutting mechanism. The corresponding end of the inner water jacket is inserted into the water inlet head.

[0013] Furthermore, the distribution plate is provided with a water distribution groove extending along the arc, and the mating plate is provided with multiple water passage holes evenly distributed around the circumference. When the mating plate rotates, the water distribution groove on the distribution plate and some of the water passage holes on the mating plate are connected to make the nozzle on the cutting head form a fan-shaped spray area in a set direction. The center of the distribution plate is provided with an anti-rotation mounting hole for anti-rotation installation on the connecting shaft.

[0014] Furthermore, the rotating assembly is provided with a water pressure chamber, the distribution plate is located in the water pressure chamber, the water supply channel is connected to the water pressure chamber, the water pressure chamber is connected to the water distribution trough through the water passage on the distribution plate, the mating plate is located on the side of the distribution plate near the water inlet seat, and the rotating assembly includes an end cover for opening the water pressure chamber, the end cover is located on the side of the distribution plate opposite to the mating plate.

[0015] Furthermore, the connecting shaft has an outer end that passes through the distribution plate and is located on the side of the distribution plate facing away from the mating plate. The outer end of the connecting shaft is provided with a locking nut and a compression spring. The locking nut is threaded onto the connecting shaft, and the compression spring is sleeved on the connecting shaft and located between the locking nut and the distribution plate so that the compression spring can form a pre-pressure on the distribution plate and the mating plate by tightening the locking nut.

[0016] Beneficial Effects: This invention modifies the elements of the spray distributor in existing horizontal axis tunneling equipment. It utilizes a floating connection achieved by nesting a force transmission sleeve and an inner water sleeve. The water inlet seat of the fixed component is fixedly connected to the main shaft of the cutting mechanism, while the rotating component is fixedly connected to the cutting head. The mating plate of the rotating component cooperates with the distribution plate of the fixed component. Water flows from the water supply channel of the fixed component to the distribution plate, enters the internal water channel of the rotating component through the water passages on the distribution plate and mating plate, and is then sprayed out from the nozzle on the cutting head, achieving the spraying function. The distribution plate is connected to the connecting shaft, which is floatingly connected to the water inlet seat via the inner water sleeve and the force transmission sleeve. Both ends of the inner water sleeve cooperate with the connecting shaft and the water inlet seat insert, respectively. Similarly, both ends of the force transmission sleeve cooperate with the connecting shaft and the water inlet seat insert, ensuring axial and radial floating capability to meet the floating requirements. The force transmission sleeve is fitted outside the inner water sleeve, and both ends of the force transmission sleeve are anti-rotationally engaged with the connecting shaft and the water inlet seat, respectively. The inner water sleeve is connected to the connecting shaft and the water inlet seat insert, respectively. The water seat is sealed and can rotate relative to it. Because the inner water jacket is sealed at both ends, a water supply channel is formed through the center hole of the inner water jacket, the inlet seat, and the connecting shaft to the distribution plate. During operation, the mating plate rotates while the distribution plate does not. The mating plate and the distribution plate are in contact and rub against each other. The torque on the distribution plate can be transmitted to the force transmission sleeve through the connecting shaft. Because the force transmission sleeve is anti-rotational at both ends, the torque is transmitted to the fixed inlet seat through the force transmission sleeve. The inner water jacket is rotatable at both ends, and the connecting shaft will not transmit torque to the inner water jacket. The inner water jacket will not be torsional deformed due to torque, and it will not affect the sealing fit formed by the sealing rings installed at both ends of the inner water jacket. This helps to ensure reliable sealing fit and reduces the risk of seal failure, thus improving the sealing reliability of the spray distributor. Moreover, the inner water jacket does not bear torsional torque, which simplifies the stress on the sealing rings at both ends of the inner water jacket. The sealing rings are not easily damaged, which helps to improve service life and ensure reliable sealing.

[0017] The technical solution of the horizontal shaft tunneling equipment of the present invention is as follows:

[0018] A horizontal axis tunneling device includes a cutting mechanism, which comprises a cutting head, a main shaft, and a spray distributor. The spray distributor includes a rotating assembly for mounting to the cutting head and a fixing assembly for mounting to the main shaft. The fixing assembly includes a distribution plate, a connecting shaft connected to the distribution plate, a water inlet seat, a force transmission sleeve, and an inner water sleeve. The rotating assembly includes a mating plate that cooperates with the distribution plate to supply water through the distribution plate and the mating plate into the internal water channel of the rotating assembly and then from the cutting head. The nozzle sprays water, and the water inlet seat is used to fix it to the main shaft of the cutting mechanism. The inner water jacket is inserted into the force transmission sleeve. The two ends of the inner water jacket and the force transmission sleeve are respectively engaged with the connecting shaft and the water inlet seat sleeve and can float axially and radially. The two ends of the force transmission sleeve are engaged with the connecting shaft and the water inlet seat to prevent rotation. The two ends of the inner water jacket are engaged with the connecting shaft and the water inlet seat to seal and can rotate relative to each other. The center hole of the inner water jacket, the water inlet seat and the connecting shaft are engaged to form a water supply channel for water to flow to the distribution plate. When the mating plate rotates relative to the distribution plate and rubs, the force transmission sleeve bears the torque.

[0019] Furthermore, one end of the force transmission sleeve is fitted onto the connecting shaft, and the other end is inserted into the water inlet seat. The length of the inner water sleeve is greater than the length of the force transmission sleeve. One end of the inner water sleeve is inserted into the connecting shaft, and the other end is inserted into the water inlet seat.

[0020] Furthermore, an outer spring is fitted onto the force transmission sleeve, with one end of the outer spring abutting against one end of the force transmission sleeve that is fitted onto the connecting shaft, and the other end abutting against the water inlet seat.

[0021] Furthermore, an inner spring is installed between the inner water jacket and the water inlet seat. The inner spring is arranged along the axial direction of the inner water jacket to apply a force to the inner water jacket toward the side where the connecting shaft is located.

[0022] Furthermore, the outer circumferential surface of the inner water jacket and the inner circumferential surface of the force transmission jacket are spaced apart.

[0023] Furthermore, the water inlet seat includes a main body seat and a water inlet head threadedly connected to the main body seat. The water inlet head is provided with a water channel and is used to communicate with the water channel on the main shaft of the cutting mechanism. The corresponding end of the inner water jacket is inserted into the water inlet head.

[0024] Furthermore, the distribution plate is provided with a water distribution groove extending along the arc, and the mating plate is provided with multiple water passage holes evenly distributed around the circumference. When the mating plate rotates, the water distribution groove on the distribution plate and some of the water passage holes on the mating plate are connected to make the nozzle on the cutting head form a fan-shaped spray area in a set direction. The center of the distribution plate is provided with an anti-rotation mounting hole for anti-rotation installation on the connecting shaft.

[0025] Furthermore, the rotating assembly is provided with a water pressure chamber, the distribution plate is located in the water pressure chamber, the water supply channel is connected to the water pressure chamber, the water pressure chamber is connected to the water distribution trough through the water passage on the distribution plate, the mating plate is located on the side of the distribution plate near the water inlet seat, and the rotating assembly includes an end cover for opening the water pressure chamber, the end cover is located on the side of the distribution plate opposite to the mating plate.

[0026] Furthermore, the connecting shaft has an outer end that passes through the distribution plate and is located on the side of the distribution plate facing away from the mating plate. The outer end of the connecting shaft is provided with a locking nut and a compression spring. The locking nut is threaded onto the connecting shaft, and the compression spring is sleeved on the connecting shaft and located between the locking nut and the distribution plate so that the compression spring can form a pre-pressure on the distribution plate and the mating plate by tightening the locking nut.

[0027] Beneficial Effects: This invention modifies the elements of the spray distributor in existing horizontal axis tunneling equipment. It utilizes a floating connection achieved by nesting a force transmission sleeve and an inner water sleeve. The water inlet seat of the fixed component is fixedly connected to the main shaft of the cutting mechanism, while the rotating component is fixedly connected to the cutting head. The mating plate of the rotating component cooperates with the distribution plate of the fixed component. Water flows from the water supply channel of the fixed component to the distribution plate, enters the internal water channel of the rotating component through the water passages on the distribution plate and mating plate, and is then sprayed out from the nozzle on the cutting head, achieving the spraying function. The distribution plate is connected to the connecting shaft, which is floatingly connected to the water inlet seat via the inner water sleeve and the force transmission sleeve. Both ends of the inner water sleeve cooperate with the connecting shaft and the water inlet seat insert, respectively. Similarly, both ends of the force transmission sleeve cooperate with the connecting shaft and the water inlet seat insert, ensuring axial and radial floating capability to meet the floating requirements. The force transmission sleeve is fitted outside the inner water sleeve, and both ends of the force transmission sleeve are anti-rotationally engaged with the connecting shaft and the water inlet seat, respectively. The inner water sleeve is connected to the connecting shaft and the water inlet seat insert, respectively. The water seat is sealed and can rotate relative to it. Because the inner water jacket is sealed at both ends, a water supply channel is formed through the center hole of the inner water jacket, the inlet seat, and the connecting shaft to the distribution plate. During operation, the mating plate rotates while the distribution plate does not. The mating plate and the distribution plate are in contact and rub against each other. The torque on the distribution plate can be transmitted to the force transmission sleeve through the connecting shaft. Because the force transmission sleeve is anti-rotational at both ends, the torque is transmitted to the fixed inlet seat through the force transmission sleeve. The inner water jacket is rotatable at both ends, and the connecting shaft will not transmit torque to the inner water jacket. The inner water jacket will not be torsional deformed due to torque, and it will not affect the sealing fit formed by the sealing rings installed at both ends of the inner water jacket. This helps to ensure reliable sealing fit and reduces the risk of seal failure, thus improving the sealing reliability of the spray distributor. Moreover, the inner water jacket does not bear torsional torque, which simplifies the stress on the sealing rings at both ends of the inner water jacket. The sealing rings are not easily damaged, which helps to improve service life and ensure reliable sealing. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the cutting mechanism of a horizontal shaft tunneling device according to an embodiment of the present invention;

[0029] Figure 2 for Figure 1 A schematic diagram of the fan-shaped spray area of ​​the cutting mechanism in the diagram;

[0030] Figure 3 for Figure 1A partial cross-sectional view of the cutting mechanism in the middle;

[0031] Figure 4 for Figure 3 A partial enlarged view of the spray distributor installation structure in the image;

[0032] Figure 5 for Figure 3 A schematic diagram of the spray distributor in the diagram;

[0033] Figure 6 for Figure 5 A partial cross-sectional view of the spray distributor in the image;

[0034] Figure 7 for Figure 6 A schematic diagram of a local structure in the image;

[0035] Figure 8 for Figure 7 A schematic diagram of the distribution panel in the circuit;

[0036] Figure 9 for Figure 7 A schematic diagram of the wear-resistant disc in the image;

[0037] Figure 10 for Figure 4 A schematic diagram of the connecting shaft in the diagram;

[0038] Figure 11 for Figure 4 A schematic diagram of the force transmission sleeve in the process.

[0039] In the picture:

[0040] 100. Spray distributor;

[0041] 200. Cutting head; 201. Nozzle; 202. Cutting head water channel;

[0042] 300. Horizontal shaft reducer; 301. Reducer main shaft; 302. Main shaft water channel;

[0043] 101. Main body; 102. Water inlet head; 103. Inner water jacket;

[0044] 104. Force transmission sleeve; 1041. External hexagonal force transmission sleeve; 1042. Internal hexagonal force transmission sleeve;

[0045] 105. Inner spring; 106. Outer spring;

[0046] 107. Connecting shaft; 1071. External hexagon of connecting shaft; 1072. Spline; 1073. Threaded section;

[0047] 108. Distribution plate; 1081. Water distribution tank; 1082. Water passage hole of distribution plate; 1083. Pressure guiding and unloading groove; 1084. Anti-rotation mounting hole; 1085. Dirt collection and flushing groove;

[0048] 109. Locking nut; 1010. Compression spring; 1011. Water jacket sealing ring;

[0049] 111. Wear-resistant disc; 1110. Wear-resistant disc water passage; 112. Flow distribution seat; 1121. Flow distribution seat water channel; 113. Flange seat; 114. Rotary sealing bushing; 115. End cover; 116. End cover bushing. Detailed Implementation

[0050] The basic concept of the spray distributor of the horizontal shaft tunneling equipment of the present invention is to realize the floating connection by using the inner water jacket and the force transmission sleeve to realize the torque transmission function and the waterway sealing function respectively, so as to avoid the sealing ring mounting base being affected by the torsional torque and thus affecting the sealing effect, which is conducive to the reliable sealing.

[0051] The present invention will be specifically described below with reference to the embodiments.

[0052] Embodiments of the horizontal shaft tunneling equipment of the present invention:

[0053] Horizontal tunneling equipment includes a cutting mechanism, such as... Figure 1 , Figure 2 , Figure 3 As shown, the cutting mechanism includes a cutting head 200, a horizontal shaft reducer 300, and a spray distributor 100. The horizontal shaft reducer 300 supports and drives the cutting head 200 to rotate. The reducer spindle 301 of the horizontal shaft reducer 300 is connected to the spray distributor 100. The cutting head 200 can rotate relative to the reducer spindle 301, which is also the main shaft of the cutting mechanism. The cutting head 200 is equipped with a nozzle 201 and has a cutting head water channel 202 inside. The cutting head water channel 202 is connected to the nozzle 201 and to the water channel inside the spray distributor 100. Two cutting heads 200 are installed on the output ends of both sides of the horizontal shaft reducer 300. The spray distributor 100 is installed at the end of the cutting head 200. The two sides of the horizontal shaft reducer 300 have a symmetrical structure. The spray distributor 100 includes a rotating assembly for mounting onto the cutting head 200 and a fixing assembly for mounting onto the reducer main shaft 301. The fixing assembly is fixed to the reducer main shaft 301 by bolts, and the rotating assembly is fixed to the cutting head 200 by bolts. After the spray distributor 100 is fixed, the inlet of the water channel inside the spray distributor 100 is connected to the main shaft water channel 302 of the reducer main shaft 301, and the outlet of the water channel inside the spray distributor 100 is connected to the cutting head water channel 202. The number of outlets is the same as the number of cutting head water channels 202. The cutting head water channels 202 are connected to the nozzles 201, forming the basic water passage of the cutting mechanism of the horizontal axis tunneling equipment.

[0054] Combination Figure 4 , Figure 5 , Figure 6 , Figure 7 The fixing components of the spray distributor 100 include a water inlet seat, an inner water jacket 103, a force transmission sleeve 104, an inner spring 105, an outer spring 106, a connecting shaft 107, a distribution plate 108, and corresponding seals. The water inlet seat includes a main body seat 101 and a water inlet head 102. The main body seat 101 is fixedly mounted on the reducer main shaft 301. The inner water jacket 103 and the force transmission sleeve 104 are sequentially mounted on the water inlet seat. A seal is provided between the inner water jacket 103 and the water inlet seat. A spring is installed between the force transmission sleeve 104 and the water inlet seat. The fixing components of the spray distributor 100 do not rotate with the cutting head 200. The connecting shaft 107 and the distribution plate 108 are connected by a spline. The water inlet seat, the force transmission sleeve 104, and the connecting shaft 107 transmit torque through a hexahedral structure. The rotating assembly rotates with the cutting head 200. The rotating assembly of the spray distributor 100 includes a distributor seat 112, a wear-resistant disc 111, a flange seat 113, an end cover 115, an end cover bushing 116, a rotary sealing bushing 114, and corresponding sealing elements. The wear-resistant disc 111 is a mating disc used to cooperate with the distributor disc 108. The wear-resistant disc 111 is fixed to the distributor seat 112. The water passages evenly distributed on the wear-resistant disc 111 are connected to the distributor seat water channels 1121 on the distributor seat 112. The distributor seat 112 is fixed to the cutting head 200 by bolts. The distributor seat water channels 1121 evenly distributed on the circumference of the distributor seat 112 are connected to the cutting head water channel 202.

[0055] The cutting head 200 is fixedly connected to the housing of the horizontal shaft reducer 300. The housing of the horizontal shaft reducer 300 drives the cutting head 200 to rotate, and the cutting head 200 drives the rotating component of the spray distributor 100 to rotate. The main shaft 301 of the reducer is fixedly connected to the fixed component of the spray distributor 100 by bolts and does not rotate with the cutting head 200. There is a relative rotational relationship between the distribution plate 108 and the wear-resistant plate 111, and the two form an end face seal. There is a relative rotational relationship between the connecting shaft 107 and the rotary sealing bushing 114, and a rotary seal is provided between the two. High-pressure water passes through the inlet head 102, the inner water jacket 103, the connecting shaft 107, the end cover 115, the distribution plate 108, the wear-resistant plate 111, the distribution seat 112, and the cutting head 200 in sequence, and then water mist is sprayed out from the nozzles 201 arranged on the cutting head 200. Due to the arc-shaped water channel structure on the distribution plate 108, the water passages on the wear-resistant plate 111 connect and disconnect during relative rotation with the distribution plate 108. This allows the nozzles 201 on the cutting head 200 to connect and disconnect during the spraying process as the cutting head 200 rotates one revolution. Consequently, the spray direction of the cutting head 200 remains forward during rotation, presenting a fan-shaped spray pattern. Figure 2 The fan-shaped spray area A in the middle.

[0056] The fixed assembly of the spray distributor 100 is equipped with a floating connection structure to accommodate the positional offset of the cutting head relative to the reducer main shaft 301. The floating connection structure is achieved through the floating connection of the inner water jacket 103 and the force transmission sleeve 104 to the water inlet seat and the connecting shaft 107, respectively. The connecting shaft 107 passes through the rotating assembly and forms a rotary seal engagement with the rotary sealing bushing 114 and the distributor seat 112. The distributor plate 108 is connected to the connecting shaft 107. The inner water jacket 103 is installed inside the force transmission sleeve 104. The two ends of the inner water jacket 103 and the force transmission sleeve 104 are respectively engaged with the connecting shaft 107 and the water inlet seat, and can float axially and radially. The two ends of the force transmission sleeve 104 are engaged with the connecting shaft 107 and the water inlet seat to prevent rotation. The two ends of the inner water jacket 103 are engaged with the connecting shaft 107 and the water inlet seat to seal and can rotate relative to each other. The center holes of the inner water jacket 103, the water inlet seat, and the connecting shaft 107 are engaged to form a water supply channel for water to flow to the distribution plate 108. When the wear-resistant plate 111, which is a mating plate, rotates relative to the distribution plate 108 and rubs, the force transmission sleeve 104 bears torque, while the inner water jacket 103 does not bear torque.

[0057] The connecting shaft 107 is floatingly connected to the water inlet seat through the inner water sleeve 103 and the force transmission sleeve 104. The two ends of the inner water sleeve 103 are respectively engaged with the connecting shaft 107 and the water inlet seat insert sleeve. The two ends of the force transmission sleeve 104 are also respectively engaged with the connecting shaft 107 and the water inlet seat insert sleeve. The insert sleeve structure ensures that it can float in the axial and radial directions to meet the floating requirements. The force transmission sleeve 104 is sleeved outside the inner water sleeve 103, and the two ends of the force transmission sleeve 104 are respectively engaged with the connecting shaft 107 and the water inlet seat to prevent rotation. The two ends of the inner water sleeve 103 are engaged with the connecting shaft 107 and the water inlet seat to seal and can rotate relative to each other. The two ends of the inner water sleeve 103 are sealed with the water inlet head 102 of the water inlet seat and the connecting shaft 107 through the water sleeve sealing ring 1011. Since the two ends of the inner water sleeve 103 are sealed, the water supply channel to the distribution plate 108 can be formed through the engagement of the inner water sleeve 103, the water inlet seat, and the central hole of the connecting shaft 107.

[0058] During operation, the wear-resistant disc 111 rotates while the distribution disc 108 remains stationary. The wear-resistant disc 111 and the distribution disc 108 are in contact and rub against each other. The torque received by the distribution disc 108 can be transmitted to the force transmission sleeve 104 through the connecting shaft 107. Since the two ends of the force transmission sleeve 104 are anti-rotationally fitted, the torque is transmitted to the fixed water inlet seat through the force transmission sleeve 104. However, the two ends of the inner water sleeve 103 are rotatably fitted, and the connecting shaft 107 will not transmit torque to the inner water sleeve 103. The inner water sleeve 103 will not undergo torsional deformation due to torque, and this will not affect the sealing fit formed by the sealing rings installed at both ends of the inner water sleeve 103. This helps to ensure reliable sealing fit, reduces the likelihood of sealing failure, and improves the sealing reliability of the spray distributor 100. Moreover, the inner water sleeve 103 does not bear torsional torque, which simplifies the stress on the sealing rings at both ends of the inner water sleeve 103. The sealing rings are less likely to be damaged, which helps to improve service life and ensure reliable sealing.

[0059] The distributor seat 112, rotary sealing bushing 114, wear-resistant disc 111, and flange seat 113 all have axially penetrating central holes. With the side containing the end cap 115 as the axially outer side, the rotary sealing bushing 114 is bolted to the inner side of the distributor seat 112, the wear-resistant disc 111 and flange seat 113 are fixed to the outer side of the distributor seat 112, and the end cap 115 is fixed to the outer opening of the flange seat 113. A seal is provided at the mating surface between the flange seat 113 and the distributor seat 112, and a seal is provided at the circumferential surface mating point between the end cap 115 and the flange seat 113. The connecting shaft 107 is adapted to pass through the central holes of the rotary sealing bushing 114 and the distributor seat 112, and both the rotary sealing bushing 114 and the central holes of the distributor seat 112 form a seal with the outer circumferential surface of the connecting shaft 107. The outlet of the distributor seat water channel 1121 constitutes the outlet of the internal water channel of the spray distributor 100.

[0060] The main body 101 is sealed to the main shaft 301 of the reducer. The main body 101 has an axially through central hole. The main body 101 has a part that extends into the main shaft water channel 302 of the main shaft 301 of the reducer and the part is internally threaded to the water inlet head 102. The water inlet head 102 is sealed to the main body 101. The water inlet head 102 has a through central hole. The central hole of the water inlet head 102 is a stepped hole. One end of the hole forms the water inlet of the internal water channel of the spray distributor 100, and the other end of the hole is for one end of the inner water jacket 103 to be fitted and inserted. The main body 101 has a portion that axially protrudes from the end face of the reducer main shaft 301, and this portion is used to insert one end of the force transmission sleeve 104. The other end of the force transmission sleeve 104 is fitted onto the connecting shaft 107. The length of the inner water sleeve 103 is greater than the length of the force transmission sleeve 104. One end of the inner water sleeve 103 is inserted into the connecting shaft 107, and the other end is inserted into the water inlet seat. By utilizing the inner and outer surfaces of the connecting shaft 107 for the inner water sleeve 103 and the force transmission sleeve 104 to fit together, the length of the connecting shaft 107 can be shortened, the size reduced, space saved, and the use reliable. In other embodiments, the outer diameter of the inner end of the connecting shaft can be set to be large enough, and a stepped hole structure can be provided at the inner end of the central hole of the connecting shaft. The outer large diameter portion of the stepped hole is used for the force transmission sleeve to be inserted, and the inner small diameter portion is used for the inner water sleeve to be inserted.

[0061] The outer portion of the central hole of the main body 101 has a larger radial dimension and forms an anti-rotation fitting hole. The inner end of the force transmission sleeve 104 has an anti-rotation structure to form an anti-rotation fit after it is fitted into the anti-rotation fitting hole of the main body 101. The inner end of the connecting shaft 107 has an anti-rotation structure, and the outer end of the force transmission sleeve 104 has an anti-rotation fitting hole to form an anti-rotation fit after the outer end of the force transmission sleeve 104 is fitted onto the inner end of the connecting shaft 107. The inner end of the connecting shaft 107 has a shoulder, which is axially spaced from the inner end face. An anti-rotation structure is provided on the shoulder. The outer end of the central hole of the force transmission sleeve 104 has a stepped hole structure with a stepped surface opposite to the shoulder, which can form a limiting position. The connecting shaft 107 has a circular center hole, and the inner end of the center hole is a stepped hole. The outer end of the inner water jacket 103 is inserted into the center hole of the connecting shaft 107, and its outer end face is axially opposite to the stepped surface of the stepped hole. A water jacket sealing ring 1011 is installed on the outer end of the inner water jacket 103. The outer circumferential surface of the outer end of the inner water jacket 103 and the inner circumferential surface of the center hole of the connecting shaft 107 are sealed by the water jacket sealing ring 1011. The inner part of the center hole of the main body 101 has a smaller radial dimension and is threaded to the inlet head 102. The inner diameter of the inner end of the center hole of the inlet head 102 is smaller than the inner diameter of the outer end. The inner end of the inner water jacket 103 is inserted into the outer end of the center hole of the inlet head 102. A water jacket sealing ring 1011 is installed on the inner end of the inner water jacket 103. The outer circumferential surface of the inner end of the inner water jacket 103 and the inner circumferential surface of the center hole of the inlet head 102 are sealed by the water jacket sealing ring 1011.

[0062] An outer spring 106 is fitted onto the force transmission sleeve 104. One end of the outer spring 106 abuts against the outer end of the force transmission sleeve 104 that is fitted onto the connecting shaft 107, and the other end abuts against the outer end of the main body seat 101 of the water inlet seat. The outer end of the force transmission sleeve 104 has a retaining edge for the outer spring 106 to press against, and the outer end of the main body seat 101 has a stepped surface for the outer spring 106 to press against. In the extension or compression direction of the outer spring 106, the inner end of the force transmission sleeve 104 can move inside the main body seat 101. Under the compression force of the outer spring 106, the stepped surface inside the outer end of the force transmission sleeve 104 can be engaged with the shoulder of the outer end of the connecting shaft 107, so that the force transmission sleeve 104 and the connecting shaft 107 are in stable contact, forming a firm transmission engagement. In other embodiments, the outer spring may be omitted, and instead, an axially upward and inwardly limiting stepped surface may be provided inside the main body seat to prevent the force transmission sleeve from disengaging.

[0063] An inner spring 105 is installed between the inner water sleeve 103 and the inlet head 102. The inner spring 105 is located in the center hole of the inlet head 102, with one end pressing against the stepped surface inside the inlet head 102 and the other end pressing against the end face of the inner water sleeve 103. The inner spring 105 is arranged axially along the inner water sleeve 103 to apply a force to the inner water sleeve 103 toward the side where the connecting shaft 107 is located. This allows the outer end of the inner water sleeve 103 to press against the inner step at the inner end of the connecting shaft 107, which is beneficial to the stability of the inner water sleeve 103. In other embodiments, the inner spring may not be provided.

[0064] The outer diameter of the portion of the inner water jacket 103 where the water jacket sealing rings 1011 are installed at both ends is larger than the outer diameter of the main body portion between the two ends. The outer circumferential surface of the inner water jacket 103 is spaced apart from the inner circumferential surface of the force transmission sleeve 104. There is an annular space between the inner water jacket 103 and the force transmission sleeve 104, which can reduce the influence of the force transmission sleeve 104 on the inner water jacket 103. The inner water jacket 103 and the force transmission sleeve 104 can float independently, which is beneficial to improving reliability.

[0065] The water inlet base includes a main body 101 and a water inlet head 102 threadedly connected to the main body 101. The central hole of the water inlet head 102 is a circular hole structure, forming a water channel for the water inlet head 102. The corresponding end of the inner water sleeve 103 is inserted into the water inlet head 102. After the water inlet head 102 wears out, it can be replaced separately, saving costs. In other embodiments, the water inlet base can also be a one-piece molded structure.

[0066] Combination Figure 10 , Figure 11The anti-rotation structure at the inner end of the force transmission sleeve 104 is an outer hexagonal structure 1041, and the anti-rotation mating hole at the outer end of the force transmission sleeve 104 is an inner hexagonal structure 1042. Correspondingly, the main body seat 101 is provided with an inner hexagonal structure, and the connecting shaft 107 is provided with an outer hexagonal structure, namely, an outer hexagonal structure 1071. The force transmission sleeve 104 forms an anti-rotation mechanism with the main body seat 101 through the outer hexagonal structure, and the force transmission sleeve 104 forms an anti-rotation mechanism with the outer hexagonal structure of the connecting shaft 107 through the inner hexagonal structure. In this embodiment, a hexagonal structure is used in the transmission link; in other embodiments, it can be replaced with a four-sided structure or a two-plane structure, or other transmission structures.

[0067] A distribution plate 108 is mounted at the midpoint of the length of the connecting shaft 107, combined with... Figure 7 , Figure 8 , Figure 9 The distribution plate 108 is provided with a water distribution groove 1081 extending along an arc, which is an arc-shaped water passage groove. The wear-resistant plate 111 is provided with a plurality of wear-resistant plate water passage holes 1110 evenly distributed around its circumference. When the wear-resistant plate 111 rotates, the water distribution groove 1081 on the distribution plate 108 communicates with some of the wear-resistant plate water passage holes 1110 on the wear-resistant plate 111, so that the nozzle 201 on the cutting head 200 forms a fan-shaped spray area in a set direction. The distribution plate 108 is provided with an anti-rotation mounting hole 1084 at its center for anti-rotation mounting on the connecting shaft 107, which can adjust the mounting angle of the distribution plate 108 to realize transmission and adjust the spray direction. In other embodiments, the distribution plate and the connecting shaft can also be integrally connected.

[0068] The internal water channels of the rotating assembly include wear-resistant disc water passages 1110 and distribution seat water channels 1121. The distribution disc 108 has multiple distribution disc water passages 1082 that penetrate the distribution groove 1081, with each distribution disc water passage 1082 spaced apart along an arc. The central area of ​​the distribution disc 108 has a groove and a connecting hole penetrating the groove; the groove is used to cooperate with the wear-resistant disc 111 to form a water pressure balance chamber. The distribution groove 1081 faces the wear-resistant disc 111, and the wear-resistant disc 111 is in contact with the surface of the distribution disc 108. When the wear-resistant disc 111 rotates, water enters through the corresponding portion of the wear-resistant disc water passages 1110 that communicate with the distribution groove 1081, while the others do not.

[0069] The rotating assembly includes a water pressure chamber, within which a distribution plate 108 is located. A wear-resistant plate 111 is located inside the distribution plate 108. The water pressure chamber is formed by the wear-resistant plate 111, a flange seat 113, and an end cover 115. A water supply channel communicates with the water pressure chamber, which is connected to a water distribution trough 1081 via a water passage on the distribution plate 108. The wear-resistant plate 111 is located on the side of the distribution plate 108 closest to the water inlet seat. The rotating assembly includes an end cover 115 for opening the water pressure chamber. The end cover 115 is located on the side of the distribution plate 108 opposite to the wear-resistant plate 111, allowing the distribution plate 108 to be replaced by opening the end cover 115.

[0070] The connecting shaft 107 is provided with a spline 1072, and the distribution plate 108 is provided with an anti-rotation mounting hole 1084 at its center. The two are connected by the spline 1072 engaging with the anti-rotation mounting hole 1084. The connecting shaft 107 has an outer end that passes through the distribution plate 108 and is located on the side of the distribution plate 108 facing away from the wear-resistant plate 111. The outer end of the connecting shaft 107 is provided with a locking nut 109 and a compression spring 1010. The locking nut 109 is threaded onto the threaded section 1073 of the connecting shaft 107. The compression spring 1010 is sleeved on the connecting shaft 107 and is located between the locking nut 109 and the distribution plate 108. By tightening the locking nut 109, the compression spring 1010 forms a preload on the distribution plate 108 and the wear-resistant plate 111. The distribution plate 108 and the wear-resistant plate 111 form an end-face contact sealing structure.

[0071] At both ends of the water distribution groove 1081 on the sealing end face of the distribution plate 108, pressure guiding and unloading grooves 1083 are provided. The pressure guiding and unloading grooves 1083 extend from the sealing end face to the water distribution groove 1081, and the groove depth gradually increases. On the other side of the sealing end face of the distribution plate 108 where the water distribution groove 1081 is not provided, a dirt collecting and flushing groove 1085 is provided.

[0072] The outer end of the connecting shaft 107 is supported on the end cover 115. An end cover bushing 116 is fixedly installed at the center of the inner end of the end cover 115. The outer end of the connecting shaft 107 passes through the end cover bushing 116. The end cover 115 and the rotary sealing bushing 114 form a rotational fit between the connecting shaft 107 on both sides of the distribution plate 108, which helps to maintain the relative position and ensures reliable use. The end cover 115 is provided with water channels, which include a central cavity and water passage holes. The central cavity communicates with the central hole of the end cover bushing 116 so that it communicates with the central hole of the connecting shaft 107 after installation. The water passage holes on the end cover 115 are evenly distributed around the end cover bushing 116 and also around the outer end of the connecting shaft 107, and communicate with the water pressure chamber where the distribution plate 108 is located.

[0073] High-pressure water enters the spray distributor 100, passes sequentially through the inlet head 102, inner water jacket 103, connecting shaft 107, and end cover 115 to reach the water pressure chamber, then enters the distribution plate 108, passes through the distribution plate 108, wear-resistant plate 111, and distribution seat 112, and enters the nozzle 201 through the cutting head water channel 202 connected to the outlet of the spray distributor 100, finally being sprayed out from the nozzle 201. The direction of high-pressure water flow is shown in the figure. Figure 6 The direction of the middle arrow.

[0074] Because the wear-resistant disc 111 and the distribution disc 108 rotate relative to each other, when the wear-resistant disc water passage hole 1110 on the wear-resistant disc 111 rotates to correspond with the water distribution groove 1081 on the distribution disc 108, the water passage opens, ultimately forming a spray effect. When the wear-resistant disc water passage hole 1110 on the wear-resistant disc 111 rotates to other positions on the distribution disc 108, the water passage closes. There is always a portion of the water passage open and a portion closed. The arc angle of the water distribution groove 1081 on the distribution disc 108 determines the spray angle of the fan-shaped spray. The pressure guiding and unloading groove 1083 pre-pressure guides and pre-unloads the high-pressure water during the water passage opening and closing process, ensuring a smooth spray. The dirt-collecting and flushing groove 1085 serves to collect small particulate contaminants entering from the end face seal, reducing wear between the wear-resistant disc 111 and the distribution disc 108, and extending their service life. The spray direction of the final nozzle 201 can be adjusted by adjusting the relative angle between the distribution plate 108 and the connecting shaft 107 through the spline 1072.

[0075] The spray distributor 100 enables the cutting head 200 of the horizontal axis tunneling equipment to rotate and directionally spray, with the spray direction always facing the tunneling direction and the spray angle being fan-shaped. During the cutting process of the horizontal axis tunneling equipment, the area where the cutting head 200 generates dust can be covered by timely and effective spraying, thereby effectively reducing dust on the working surface, reducing wear on the cutting teeth, preventing operators and equipment from being sprayed with water, improving construction comfort and equipment service life. Maintenance and replacement of vulnerable parts inside the fan-shaped spray distributor 100 can be achieved without disassembling the cutting head 200. The sealing reliability of the floating connection is improved through the respective actions of the inner water jacket 103 and the force transmission sleeve 104.

[0076] Embodiments of the spray distributor for the horizontal axis tunneling equipment of the present invention:

[0077] The spray distributor of the horizontal axis tunneling equipment in this embodiment has the same structure as the spray distributor of the horizontal axis tunneling equipment in the above embodiments, and will not be described again here.

[0078] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A spray flow distributor for a transverse axis excavating apparatus, characterised in that, The device includes a rotating assembly for mounting to the cutting head and a fixing assembly for mounting to the main shaft of the cutting mechanism. The fixing assembly includes a distribution plate, a connecting shaft connected to the distribution plate, a water inlet seat, a force transmission sleeve, and an inner water sleeve. The rotating assembly includes a mating plate that cooperates with the distribution plate to supply water through the distribution plate and the mating plate into the internal water channel of the rotating assembly and then spraying it out from the nozzle on the cutting head. The water inlet seat is used to fix it to the main shaft of the cutting mechanism. The inner water sleeve passes through the force transmission sleeve. The two ends of the inner water sleeve and the force transmission sleeve are respectively fitted with the connecting shaft and the water inlet seat insert and are axially and radially floating. The two ends of the force transmission sleeve are anti-rotationally fitted with the connecting shaft and the water inlet seat. The two ends of the inner water sleeve are sealedly fitted with the connecting shaft and the water inlet seat and can rotate relative to each other. The central holes of the inner water sleeve, the water inlet seat, and the connecting shaft cooperate to form a water supply channel for water to flow to the distribution plate. When the mating plate rotates relative to the distribution plate and rubs, the force transmission sleeve bears torque.

2. The cross-cut tunneling apparatus spray flow distributor of claim 1, wherein, One end of the force transmission sleeve is fitted onto the connecting shaft, and the other end is inserted into the water inlet seat. The length of the inner water sleeve is greater than the length of the force transmission sleeve. One end of the inner water sleeve is inserted into the connecting shaft, and the other end is inserted into the water inlet seat.

3. The cross-cut tunneling apparatus spray flow distributor of claim 2, wherein, An external spring is fitted onto the force transmission sleeve. One end of the external spring abuts against the end of the force transmission sleeve that is fitted onto the connecting shaft, and the other end abuts against the water inlet seat.

4. The spray distributor for a horizontal-axis tunneling equipment according to claim 1, 2, or 3, characterized in that, An inner spring is installed between the inner water jacket and the water inlet seat. The inner spring is arranged along the axial direction of the inner water jacket to apply a force to the inner water jacket toward the side where the connecting shaft is located.

5. The spray distributor for a horizontal axis tunneling device according to claim 1, 2, or 3, characterized in that, The outer circumferential surface of the inner water jacket and the inner circumferential surface of the force transmission jacket are spaced apart.

6. The spray distributor for a horizontal axis tunneling device according to claim 1, 2, or 3, characterized in that, The water inlet seat includes a main body and a water inlet head threadedly connected to the main body. The water inlet head has a water channel for communicating with the water channel on the main shaft of the cutting mechanism. The corresponding end of the inner water jacket is inserted into the water inlet head.

7. The spray distributor for a horizontal-axis tunneling equipment according to claim 1, 2, or 3, characterized in that, The distribution plate is provided with a water distribution groove extending along the arc, and the mating plate is provided with multiple water passage holes evenly distributed around the circumference. When the mating plate rotates, the water distribution groove on the distribution plate and some of the water passage holes on the mating plate are connected to make the nozzle on the cutting head form a fan-shaped spray area in a set direction. The center of the distribution plate is provided with an anti-rotation mounting hole for anti-rotation installation on the connecting shaft.

8. The spray distributor for a horizontal-axis tunneling equipment according to claim 7, characterized in that, The rotating assembly has a water pressure chamber, and the distribution plate is located inside the water pressure chamber. The water supply channel is connected to the water pressure chamber. The water pressure chamber is connected to the water distribution trough through the water passage on the distribution plate. The mating plate is located on the side of the distribution plate near the water inlet seat. The rotating assembly includes an end cover for opening the water pressure chamber. The end cover is located on the side of the distribution plate opposite to the mating plate.

9. The spray distributor for a horizontal-axis tunneling equipment according to claim 8, characterized in that, The connecting shaft has an outer end that passes through the distribution plate and is located on the side of the distribution plate facing away from the mating plate. The outer end of the connecting shaft is provided with a locking nut and a compression spring. The locking nut is threaded onto the connecting shaft, and the compression spring is sleeved on the connecting shaft and located between the locking nut and the distribution plate so that the compression spring can form a pre-pressure on the distribution plate and the mating plate by tightening the locking nut.

10. A horizontal-axis tunneling machine, characterized in that, It includes a cutting mechanism, which comprises a cutting head, a cutting mechanism main shaft, and a spray distributor for the transverse shaft tunneling equipment as described in any one of claims 1-9.

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