A fixing device for wet-mix shotcrete machine pipe

Abstract

The application discloses a fixing device for a wet-type shotcrete machine pipe, relates to the technical field of pipe fixing, and comprises a conveying pipe, a connecting sleeve coaxially arranged horizontally with the conveying pipe, a sealing assembly arranged outside the conveying pipe, and a positioning assembly arranged outside the connecting sleeve, wherein the sealing assembly is matched with the positioning assembly to fixedly connect the conveying pipe and the connecting sleeve and simultaneously realize shock absorption of the connecting position of the conveying pipe and the connecting sleeve during use of the wet-type shotcrete machine; the conveying pipe and the connecting sleeve are fixedly installed through the setting of the fixing sleeve, the positioning sleeve, the fixing bolt and the positioning bolt, so that the fixed installation failure caused by the impact vibration of the conveying concrete material is avoided, the vibration isolation treatment is performed through the lubricating oil layer, the fixed installation failure is further avoided, the residual material at the connecting position of the pipe after each use is washed away through the water flow, and the difficulty in disassembly caused by the solidification of the residual concrete material is avoided.

Description

Technical Field

[0001] This invention relates to the field of pipe fixing technology, specifically to a fixing device for pipes in wet shotcrete machines. Background Technology

[0002] Wet shotcrete machines, also known as mining wet shotcrete machines, are industrial equipment that uses a wet spraying process to form a support layer of concrete or mortar. They are mainly used in fields such as mine support, tunnel engineering, slope greening, and ecological restoration.

[0003] To ensure construction needs are met during use, the material conveying end of the wet shotcrete machine needs to be connected to a pipe, and the material conveying distance of the wet shotcrete machine is extended through the pipe, thereby completing the long-distance transportation of concrete materials.

[0004] A utility model patent with publication number CN221723695U describes a shockproof joint with axial limiting function. It includes a first connecting part, one end of which is provided with a second connecting part. A plurality of connecting shafts are disposed between the first and second connecting parts, and one end of each connecting shaft is fixedly assembled to the side of the first connecting part near the second connecting part. A sliding groove is formed on the side of the second connecting part near the first connecting part relative to the connecting shaft, and the end of the connecting shaft away from the first connecting part slides within the sliding groove. A first buffer spring is disposed inside the sliding groove, and both ends of the first buffer spring... The first and second connecting parts are fixedly connected to the inner walls of the connecting shaft and the sliding groove, respectively. An annular plate is fixedly fitted on both the first and second connecting parts. A second buffer spring is provided between the two annular plates, and the two ends of the second buffer spring are fixedly connected to the two annular plates respectively. This achieves the purpose of "through the first connecting part, the second connecting part, the connecting shaft, the sliding groove and the second buffer spring, the first connecting part slides and assembles with the second connecting part through the connecting shaft, and then the vibration of the two ends of the connector is buffered by the first buffer spring and the second buffer spring, thereby improving the connection stability of the two ends of the connector and ensuring the service life of the connector".

[0005] However, in the actual implementation of the above patent, when conveying certain special materials, such as concrete, the aggregates in the material itself will impact the pipe connection and generate some noise. After the material is conveyed, the conveyed material will remain inside the pipe. After the remaining material solidifies, it will cause blockage inside the pipe, affecting the subsequent material conveying and also affecting the disassembly of the pipe connector.

[0006] To address this issue, we propose a fixing device for the pipes of wet shotcrete machines. Summary of the Invention

[0007] Technical problems to be solved

[0008] In view of this, and in view of the shortcomings of the prior art, the present invention provides a fixing device for pipes of wet shotcrete machines to solve the problems mentioned in the background art.

[0009] Technical solution

[0010] To achieve the above objectives, the present invention provides the following technical solution: a fixing device for a wet shotcrete machine pipe, comprising a conveying pipe and a connecting sleeve arranged horizontally coaxially with the conveying pipe, and further comprising a sealing component disposed outside the conveying pipe and a positioning component disposed outside the connecting sleeve;

[0011] The sealing component works in conjunction with the positioning component to achieve a fixed connection between the conveying pipe and the connecting sleeve, and simultaneously achieves vibration reduction at the connection point of the conveying pipe and the connecting sleeve when the wet shotcrete machine is used.

[0012] The sealing assembly includes a fixing sleeve, fixing bolts, fixing sleeve, connecting groove, sealing slider, connecting spring, limiting block, and volumetric cavity;

[0013] The fixing sleeve is fitted and sleeved onto the outer surface of the conveying pipe;

[0014] The fixing bolts are arranged in a circumferential array and threadedly connected to the inside of the fixing sleeve. Multiple fixing bolts penetrate the inner and outer surfaces of the fixing sleeve and abut against the outer surface of the conveying pipe.

[0015] The fixing sleeve is fixedly connected to the inner surface of the end of the fixing sleeve away from the conveying pipe;

[0016] The connecting grooves are arranged in a circular array and penetrate the inner and outer walls of the fixed sleeve;

[0017] The sealing slider is slidably connected to the inside of the fixed sleeve;

[0018] The connecting springs are arranged in a circumferential array and fixedly connected between the inner wall of the fixed sleeve and the side wall of the sealing slider;

[0019] The limiting block is fixedly connected to the side wall of the sealing slider;

[0020] The volumetric cavity is formed by the space between the surface of the sealing slider away from the connecting spring and the inner wall of the fixed sleeve;

[0021] The positioning component is used to fix the position of the connecting sleeve and, together with the sealing component, completes the quick connection between the conveying pipe and the connecting sleeve.

[0022] Preferably, the positioning assembly includes a positioning sleeve, a positioning bolt, a positioning tube, a wedge, and a return spring;

[0023] The positioning sleeve fits snugly onto the outer surface of the connecting sleeve;

[0024] The positioning bolts are arranged in a circumferential array and are threaded through the inner and outer surfaces of the positioning sleeve;

[0025] The positioning sleeve is slidably connected to the inner surface of the positioning sleeve;

[0026] The wedge block is slidably connected to the inner surface of the positioning sleeve;

[0027] The reset springs are arranged in a circular array and fixedly connected between the outer wall of one side of the wedge and the inner wall of the positioning sleeve.

[0028] Preferably, the positioning component further includes a receiving cavity, a connecting cavity, a collecting cavity, and a water inlet;

[0029] The receiving cavity is located inside the positioning sleeve on the side near the fixing sleeve;

[0030] The connecting cavities are arranged in a circular array and are opened through the inside of the positioning sleeve;

[0031] The collecting cavity is formed by one side surface of the wedge and the outer wall of the fixed sleeve away from the conveying pipe.

[0032] Preferably, the fixed sleeve and the positioning sleeve are threaded together, one side surface of the fixed sleeve abuts against the side wall of the conveying pipe, and the inside of the fixed sleeve is hollow. A sealing ring is provided between the outer surface of the sealing slider and the inner wall of the fixed sleeve, and a groove with a size that matches the fixing bolt is provided at the end of the limiting block away from the sealing slider.

[0033] Preferably, the number of sealing sliders, connecting springs, and limiting blocks is the same as the number of fixing bolts. The connecting groove is connected to the volume cavity. In the initial state, the sealing slider blocks the connecting channel between the connecting groove and the volume cavity.

[0034] Preferably, the positioning sleeve is in contact with one end surface of the connecting sleeve, the side surface of the wedge away from the positioning sleeve is in contact with the outer surface of the connecting sleeve, the interior of one end of the wedge is provided with threaded holes of a size and number that are compatible with the positioning bolts, and one side surface of the wedge is set as an inclined plane.

[0035] Preferably, a groove is formed between the positioning sleeve and the wedge, which is used to insert and fix the position of the connecting sleeve. The surface of the positioning sleeve away from the connecting sleeve abuts against the surface of the fixed sleeve. The positioning sleeve is internally through-hole set. The inner cavity of the conveying pipe, the inner cavity of the fixed sleeve, the inner cavity of the positioning sleeve and the inner cavity of the connecting sleeve are arranged coaxially along the horizontal direction.

[0036] Preferably, the receiving cavity and the collecting cavity are connected via a connecting cavity.

[0037] Preferably, the volume chamber, the receiving chamber, the connecting chamber, and the collecting chamber together constitute a buffer chamber for containing lubricating oil.

[0038] Compared with the prior art, the present invention provides a fixing device for pipes of wet shotcrete machines, which has the following advantages:

[0039] By using fixed sleeves, positioning sleeves, fixing bolts, and positioning bolts, the material conveying pipe and connecting sleeve are fixedly installed, avoiding the failure of the fixed installation due to the impact and vibration of the concrete material being conveyed after long-term use.

[0040] The fixing sleeve and fixing bolt are used to fix the material conveying pipe that is fixedly installed at the discharge end of the wet shotcrete machine. The positioning sleeve, wedge and positioning bolt are used to fix the connecting sleeve. The wedge moves under the pressure of the lubricating oil, thereby locking the connecting sleeve. Under the combined action of the lubricating oil and the wedge, the positioning bolt is not subjected to impact vibration, thus preventing the locking from being released.

[0041] When the buffer chamber, which is composed of the volume chamber, the receiving chamber, the connecting chamber, and the collecting chamber, is filled with lubricating oil, it can buffer the conveying pipes and connecting sleeves. The lubricating oil acts as a buffer layer to reduce the failure of pipe fixing caused by aggregate impact during the concrete material conveying process.

[0042] By continuously injecting water into the buffer chamber, the water flow can push the sealing slider to move, thereby allowing the water to enter the pipe connection and flush away any residual concrete material, thus preventing concrete residue from remaining.

[0043] The water flushing process can prevent material residue from remaining after each use of the wet shotcrete machine, thus avoiding difficulties in disassembling the subsequent conveying pipes and connecting sleeves after the residual concrete material has solidified.

[0044] Among them, the sealing slider restricts the position of the fixing bolts by the limiting block during the movement, further avoiding the failure of the fixing sleeve to fix the conveying pipe during the flushing process. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention;

[0046] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the positioning sleeve of the present invention;

[0047] Figure 3 This is a schematic plan view of the internal cross-sectional structure of the positioning sleeve of the present invention;

[0048] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0049] Figure 5This is a schematic diagram of the internal cross-sectional structure of the fixing sleeve and the positioning sleeve of the present invention;

[0050] Figure 6 This is a schematic cross-sectional view of the connection structure at the material conveying pipe of the present invention;

[0051] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point B;

[0052] Figure 8 This is a schematic cross-sectional view of the sealing slider of the present invention;

[0053] Figure 9 For the present invention Figure 8 Enlarged schematic diagram of the structure at point C.

[0054] In the diagram: 11. Material conveying pipe; 12. Connecting sleeve;

[0055] 21. Fixing sleeve; 22. Fixing bolt; 23. Fixing sleeve; 24. Communicating groove; 25. Sealing slider; 26. Connecting spring; 27. Limiting block; 28. Volumetric cavity;

[0056] 31. Positioning sleeve; 32. Positioning bolt; 33. Positioning sleeve; 34. Wedge; 35. Return spring; 36. Receiving cavity; 37. Connecting cavity; 38. Collecting cavity; 39. Water inlet. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] Embodiments of the present invention

[0059] Please see Figure 1 , Figure 3 and Figures 5 to 9 A fixing device for a wet shotcrete machine pipe includes a conveying pipe 11 and a connecting sleeve 12 arranged horizontally coaxially with the conveying pipe 11, and also includes a sealing component disposed outside the conveying pipe 11 and a positioning component disposed outside the connecting sleeve 12.

[0060] The sealing component works in conjunction with the positioning component to achieve a fixed connection between the conveying pipe 11 and the connecting sleeve 12, and simultaneously achieves vibration reduction at the connection point between the conveying pipe 11 and the connecting sleeve 12 when the wet shotcrete machine is used.

[0061] The sealing assembly includes a fixing sleeve 21, a fixing bolt 22, a fixing sleeve 23, a connecting groove 24, a sealing slider 25, a connecting spring 26, a limiting block 27, and a volumetric cavity 28.

[0062] The fixing sleeve 21 is fitted and sleeved onto the outer surface of the conveying pipe 11.

[0063] The fixing bolts 22 are connected to the inside of the fixing sleeve 21 in a circumferential array of threads. Multiple fixing bolts 22 penetrate the inner and outer surfaces of the fixing sleeve 21 and abut against the outer surface of the conveying pipe 11.

[0064] The fixing sleeve 23 is fixedly connected to the inner surface of the fixed sleeve 21 at the end away from the conveying pipe 11.

[0065] The connecting grooves 24 are arranged in a circular array and penetrate the inner and outer walls of the fixed sleeve 23.

[0066] The sealing slider 25 is slidably connected to the inside of the fixed sleeve 21.

[0067] The connecting springs 26 are arranged in a circumferential array and fixedly connected between the inner wall of the fixed sleeve 21 and the side wall of the sealing slider 25.

[0068] The limiting block 27 is fixedly connected to the side wall of the sealing slider 25.

[0069] The volume cavity 28 is formed by the space between the surface of the sealing slider 25 away from the connecting spring 26 and the inner wall of the fixed sleeve 21.

[0070] The positioning component is used to fix the position of the connecting sleeve 12 and cooperates with the sealing component to complete the quick connection between the conveying pipe 11 and the connecting sleeve 12.

[0071] In an alternative embodiment, see [reference] Figure 6 The fixing sleeve 21 is used to fix the position of the conveying pipe 11, and the fixing bolt 22 is used to connect to the fixing sleeve 21 by thread. The fixing bolt 22 is used to press against the outer wall of the conveying pipe 11 through the end of the fixing bolt 22, so as to realize the positioning and fixing of the conveying pipe 11.

[0072] In an alternative embodiment, see [reference] Figure 6 The fixed sleeve 23 is used to limit the position of the conveying pipe 11 and keep the conveying pipe 11 stable.

[0073] In an alternative embodiment, see [reference] Figure 6 , Figure 7 as well as Figure 9 The connecting groove 24 is used to connect the volume cavity 28 with the inner cavity of the fixed sleeve 23. When water is poured into the volume cavity 28, the water pressure impact completes the cleaning of the inside of the conveying pipe 11 and the connecting sleeve 12.

[0074] In an alternative embodiment, see [reference] Figure 6 , Figure 7 as well as Figure 9 When high-pressure water is injected into the volume chamber 28, the water pressure will push the sealing slider 25 to slide inside the volume chamber 28 in the opposite direction. At the same time, the limiting block 27 fixedly connected to the sealing slider 25 will move towards the fixing bolt 22 until the moving block contacts the outer surface of the fixing bolt 22, fixing the position of the fixing bolt 22. This prevents the fixing bolt 22 from vibrating and loosening during the above process, which would cause the fixing of the conveying pipe 11 to fail.

[0075] In an alternative embodiment, see [reference] Figure 8 and Figure 9 In the initial state, the sealing slider 25 blocks the connection between the connecting groove 24 and the volume cavity 28. When the sealing slider 25 slides, the connecting groove 24 and the sealing slider 25 are in a connected state. The water injected into the volume cavity 28 will flow into the fixed sleeve 23 through the connecting groove 24, and enter the inside of the conveying pipe 11 through the inner cavity of the fixed sleeve 23 and the conveying pipe 11. At the same time, the inner cavity of the conveying pipe 11 and the inner cavity of the fixed sleeve 23 are flushed, thereby avoiding the difficulty of disassembly caused by the solidification of the concrete material remaining inside the conveying pipe 11 when the fixed sleeve 23 is disassembled.

[0076] It should be noted that the above embodiments need to be implemented after the concrete material has been transported by the conveying pipe 11. That is, at this time, the concrete material inside the conveying pipe 11 is in a non-hardened state, thereby avoiding cleaning difficulties. In addition, the above embodiments can also avoid concrete material residue inside the conveying pipe 11.

[0077] In an alternative embodiment, see [reference] Figure 8 and Figure 9 When the sealing slider 25 moves, it will simultaneously squeeze the connecting spring 26. After the water in the volume cavity 28 is completely drained, the rebound of the connecting spring 26 will cause the sealing slider 25 to move in the opposite direction inside the volume cavity 28. This will cause the sealing slider 25 to re-seal the connection channel between the volume cavity 28 and the connecting groove 24. At the same time, it will release the restriction of the limiting block 27 on the fixing bolt 22. Subsequently, the workers can loosen the fixing bolt 22 to release the fixation between the conveying pipe 11 and the fixing sleeve 21, and then remove the fixing sleeve 21 from the surface of the conveying pipe 11.

[0078] Further embodiments

[0079] Please see Figures 1 to 8 The fixing device for the pipe of the wet shotcrete machine also includes a positioning component, which includes a positioning sleeve 31, a positioning bolt 32, a positioning sleeve 33, a wedge 34, and a return spring 35.

[0080] The positioning sleeve 31 is fitted and sleeved onto the outer surface of the connecting sleeve 12.

[0081] The positioning bolts 32 are arranged in a circumferential array and are threaded through the inner and outer surfaces of the positioning sleeve 31.

[0082] The positioning sleeve 33 is slidably connected to the inner surface of the positioning sleeve 31.

[0083] The wedge 34 is slidably connected to the inner surface of the positioning sleeve 31.

[0084] The reset springs 35 are arranged in a circumferential array and fixedly connected between the outer wall of one side of the wedge block 34 and the inner wall of the positioning sleeve 31.

[0085] The positioning component also includes a receiving cavity 36, a connecting cavity 37, a collecting cavity 38, and a water inlet 39.

[0086] The receiving cavity 36 is located inside the positioning sleeve 31 on the side near the fixed sleeve 21.

[0087] The connecting cavity 37 is arranged in a circular array and is opened through the inside of the positioning sleeve 31.

[0088] The collecting cavity 38 is formed by one side surface of the wedge 34 and the outer wall of the fixed sleeve 21 away from the conveying pipe 11.

[0089] The fixed sleeve 21 and the positioning sleeve 31 are threaded together. One side surface of the fixed sleeve 23 abuts against the side wall of the conveying pipe 11, and the fixed sleeve 23 is hollow inside. A sealing ring is provided between the outer surface of the sealing slider 25 and the inner wall of the fixed sleeve 21. The end of the limiting block 27 away from the sealing slider 25 is provided with a groove whose size is adapted to the fixed bolt 22.

[0090] The number of sealing sliders 25, connecting springs 26 and limiting blocks 27 is the same as the number of fixing bolts 22. The connecting groove 24 is connected to the volume cavity 28. In the initial state, the sealing slider 25 blocks the connecting channel between the connecting groove 24 and the volume cavity 28.

[0091] The positioning sleeve 33 is in contact with one end surface of the connecting sleeve 12, the side surface of the wedge block 34 away from the positioning sleeve 31 is in contact with the outer surface of the connecting sleeve 12, the interior of one end of the wedge block 34 is provided with threaded holes of a size and number that are compatible with the positioning bolt 32, and one side surface of the wedge block 34 is set as an inclined plane.

[0092] The positioning sleeve 33 and the wedge block 34 form an insertion groove, which is used to insert and fix the position of the connecting sleeve 12. The end surface of the positioning sleeve 33 away from the connecting sleeve 12 abuts against the surface of the fixing sleeve 21. The positioning sleeve 33 is internally through-hole arranged. The inner cavity of the conveying pipe 11, the inner cavity of the fixing sleeve 23, the inner cavity of the positioning sleeve 33 and the inner cavity of the connecting sleeve 12 are arranged coaxially along the horizontal direction.

[0093] The receiving cavity 36 and the collecting cavity 38 are connected via the connecting cavity 37.

[0094] The volume chamber 28, the receiving chamber 36, the connecting chamber 37, and the collecting chamber 38 together constitute a buffer chamber for containing lubricating oil.

[0095] The water inlet 39 needs to be sealed after use.

[0096] In an alternative embodiment, see [reference] Figure 5 and Figure 6 When the conveying pipe 11 and the connecting sleeve 12 are fixedly installed together, the conveying pipe 11 is inserted into the fixed sleeve 21 and the connecting sleeve 12 is inserted into the positioning sleeve 31. Then, the fixed sleeve 21 and the connecting sleeve 12 are threaded together.

[0097] It should be noted that after the threaded connection is completed, a concrete conveying channel will be formed between the fixed sleeve 21 and the connecting sleeve 12, consisting of the conveying pipe 11, the fixed sleeve 23, the positioning sleeve 33 and the connecting sleeve 12.

[0098] In an alternative embodiment, see [reference] Figure 2 , Figure 3 as well as Figure 4 Workers inject lubricating oil into the receiving cavity 36 through the water inlet 39. The lubricating oil will gradually accumulate in the receiving cavity 36 and flow into the volume cavity 28 connected to the receiving cavity 36, gradually filling the receiving cavity 36 and the volume cavity 28.

[0099] It should be noted that as the lubricating oil in the receiving cavity 36 and the volume cavity 28 gradually fills, the lubricating oil will gradually be injected into the collecting cavity 38 through the connecting cavity 37. The lubricating oil will fill the buffer cavity formed by the volume cavity 28, the receiving cavity 36, the connecting cavity 37 and the collecting cavity 38 to contain the lubricating oil. As the lubricating oil is gradually injected, the hydraulic pressure inside the buffer cavity will gradually increase and apply pressure to the surface of the wedge 34, causing the wedge 34 to move away from the positioning sleeve 33 inside the collecting cavity 38.

[0100] In an alternative embodiment, see [reference] Figure 2 , Figure 3 as well as Figure 4The movement of the wedge 34 will simultaneously compress the return spring 35. At the same time, the movement of the wedge 34 will cause the end away from the positioning sleeve 33 to gradually extend out of the positioning sleeve 31, so that the threaded hole inside is aligned with the positioning bolt 32. After the operator rotates the positioning bolt 32, the positioning sleeve 31 and the wedge 34 are fixedly installed. Simultaneously, the positioning bolt 32 passes through the wedge 34 and abuts against the outer wall of the connecting sleeve 12, further fixing the position of the connecting sleeve 12.

[0101] It should be noted that the inclined plane on the surface of the wedge 34 makes it easier for it to move under the pressure of the lubricating oil. Under the same pipe inner diameter, the inclined plane has a larger force-bearing area, which can achieve the condition for the wedge 34 to move more quickly.

[0102] It should also be noted that the elastic coefficient of the connecting spring 26 is greater than that of the return spring 35. Specifically, when the wedge 34 compresses the return spring 35 under the pressure of the lubricating oil and causes the wedge 34 to extend completely out of the positioning sleeve 31, the sealing slider 25 will not move inside the fixed sleeve 21 under the action of the connecting spring 26.

[0103] In an alternative embodiment, see [reference] Figure 6 When the wedge 34 moves, the connection between the receiving cavity 36, the connecting cavity 37 and the collecting cavity 38 will cause the lubricating oil to enter between the positioning sleeve 33 and the collecting cavity 38, thereby filling the buffer cavity with lubricating oil.

[0104] In an alternative embodiment, see [reference] Figure 5 , Figure 6 and Figure 7 After the buffer chamber is filled with lubricating oil, during the process of the wet shotcrete machine conveying concrete material through the conveying pipe 11, fixed sleeve 21, connecting sleeve 12 and positioning sleeve 31, the concrete material will be filled with aggregate to ensure the material strength. Therefore, the conveying pipe 11, fixed sleeve 21, connecting sleeve 12 and positioning sleeve 31, which serve as the conveying channel, will vibrate under the impact of the concrete material, and at the same time generate a certain amount of noise.

[0105] During this process, the lubricating oil filling the buffer chamber can serve as a buffer layer to buffer the vibration and impact on the conveying pipe 11 and the connecting sleeve 12. At the same time, the wedge 34 and the positioning sleeve 31 can be further fixed by the positioning bolt 32.

[0106] In an alternative embodiment, see [reference] Figure 8 and Figure 9After the concrete material is delivered through the conveying pipe 11 and the connecting sleeve 12, high-pressure water is injected into the buffer chamber through the water inlet 39. The water flow will continue to increase the pressure inside the buffer chamber, thereby causing the sealing slider 25 to move under the pressure and impact of the water flow. The water flow will also flush the concrete remaining inside the conveying pipe 11, the fixed sleeve 21, the positioning sleeve 31, and the connecting sleeve 12.

[0107] It should be noted that during the above process, the positioning sleeve 31 and the wedge block 34 are always fixed by the positioning bolt 32. Therefore, during the water flushing process, the connection between the conveying pipe 11, the fixed sleeve 21, the positioning sleeve 31 and the connecting sleeve 12 is not released. After the residual concrete material inside the conveying pipe 11, the fixed sleeve 21, the positioning sleeve 31 and the connecting sleeve 12 is flushed away, it can be avoided that the solidification of the concrete material will affect the disassembly of the conveying pipe 11, the fixed sleeve 21, the positioning sleeve 31 and the connecting sleeve 12, thereby quickly releasing the connection between the wet shotcrete machine and the pipeline.

[0108] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0109] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixing device for a wet shotcrete machine pipe, comprising a conveying pipe (11) and a connecting sleeve (12) coaxially and horizontally arranged with respect to the conveying pipe (11), characterized in that: It also includes a sealing assembly disposed outside the conveying pipe (11) and a positioning assembly disposed outside the connecting sleeve (12); The sealing component and the positioning component work together to achieve a fixed connection between the conveying pipe (11) and the connecting sleeve (12), and simultaneously achieve vibration reduction at the connection between the conveying pipe (11) and the connecting sleeve (12) when the wet shotcrete machine is used. The sealing assembly includes a fixing sleeve (21), a fixing bolt (22), a fixing sleeve (23), a connecting groove (24), a sealing slider (25), a connecting spring (26), a limiting block (27), and a volumetric cavity (28); The fixing sleeve (21) is fitted and sleeved onto the outer surface of the conveying pipe (11); The fixing bolts (22) are connected to the inside of the fixing sleeve (21) in a circumferential array of threads. Multiple fixing bolts (22) penetrate the inner and outer surfaces of the fixing sleeve (21) and abut against the outer surface of the conveying pipe (11). The fixing sleeve (23) is fixedly connected to the inner surface of the fixed sleeve (21) at the end away from the conveying pipe (11); The connecting groove (24) is arranged in a circular array and penetrates the inner and outer walls of the fixed sleeve (23); The sealing slider (25) is slidably connected to the inside of the fixed sleeve (21); The connecting springs (26) are arranged in a circumferential array and fixedly connected between the inner wall of the fixed sleeve (21) and the side wall of the sealing slider (25); The limiting block (27) is fixedly connected to the side wall of the sealing slider (25); The volume cavity (28) is formed by the space between the surface of the sealing slider (25) away from the connecting spring (26) and the inner wall of the fixed sleeve (21); The positioning component is used to fix the position of the connecting sleeve (12) and cooperate with the sealing component to complete the quick connection between the conveying pipe (11) and the connecting sleeve (12).

2. The fixing device for pipes in a wet shotcrete machine according to claim 1, characterized in that: The positioning assembly includes a positioning sleeve (31), a positioning bolt (32), a positioning sleeve (33), a wedge (34), and a return spring (35); The positioning sleeve (31) is fitted and sleeved onto the outer surface of the connecting sleeve (12); The positioning bolts (32) are arranged in a circumferential array and are threaded through to the inner and outer surfaces of the positioning sleeve (31); The positioning sleeve (33) is slidably connected to the inner surface of the positioning sleeve (31); The wedge (34) is slidably connected to the inner surface of the positioning sleeve (31); The reset springs (35) are arranged in a circular array and fixedly connected between the outer wall of one side of the wedge (34) and the inner wall of the positioning sleeve (31).

3. A fixing device for pipes in a wet shotcrete machine according to claim 2, characterized in that: The positioning assembly also includes a receiving cavity (36), a connecting cavity (37), a collecting cavity (38), and a water inlet (39); The receiving cavity (36) is located inside the positioning sleeve (31) on the side near the fixing sleeve (21); The connecting cavity (37) is arranged in a circular array and is opened through the inside of the positioning sleeve (31); The collecting cavity (38) is formed by one side surface of the wedge (34) and the outer wall of the fixed sleeve (21) away from the end of the conveying pipe (11).

4. A fixing device for pipes in a wet shotcrete machine according to claim 2, characterized in that: The fixed sleeve (21) and the positioning sleeve (31) are threaded together. One side surface of the fixed sleeve (23) abuts against the side wall of the conveying pipe (11). The fixed sleeve (23) is hollow inside. A sealing ring is provided between the outer surface of the sealing slider (25) and the inner wall of the fixed sleeve (21). The end of the limiting block (27) away from the sealing slider (25) has a slot with a size that matches the fixed bolt (22).

5. A fixing device for pipes in a wet shotcrete machine according to claim 1, characterized in that: The number of sealing slider (25), connecting spring (26) and limiting block (27) is the same as the number of fixing bolts (22). The connecting groove (24) is connected to the volume cavity (28). In the initial state, the sealing slider (25) blocks the connecting channel between the connecting groove (24) and the volume cavity (28).

6. A fixing device for pipes in a wet shotcrete machine according to claim 2, characterized in that: The positioning sleeve (33) is in contact with one end surface of the connecting sleeve (12), and the side surface of the wedge (34) away from the positioning sleeve (31) is in contact with the outer surface of the connecting sleeve (12). The interior of one end of the wedge (34) is provided with screw holes of the same size and number as the positioning bolt (32), and one side surface of the wedge (34) is set as an inclined plane.

7. A fixing device for pipes in a wet shotcrete machine according to claim 2, characterized in that: The positioning sleeve (33) and the wedge (34) form an insertion groove, which is used to insert and fix the position of the connecting sleeve (12). The end surface of the positioning sleeve (33) away from the connecting sleeve (12) abuts against the surface of the fixed sleeve (21). The positioning sleeve (33) is internally through-hole set. The inner cavity of the conveying pipe (11), the inner cavity of the fixed sleeve (23), the inner cavity of the positioning sleeve (33) and the inner cavity of the connecting sleeve (12) are set along the same axis in the horizontal direction.

8. A fixing device for pipes in a wet shotcrete machine according to claim 3, characterized in that: The receiving cavity (36) and the collecting cavity (38) are connected via the connecting cavity (37).

9. A fixing device for pipes in a wet shotcrete machine according to claim 3, characterized in that: The volume chamber (28), the receiving chamber (36), the connecting chamber (37), and the collecting chamber (38) together constitute a buffer chamber for containing lubricating oil.

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