Hinge elbow connecting device and concrete pumping equipment

Abstract

The utility model discloses a hinge elbow connecting device and concrete pumping equipment, the hinge elbow connecting device comprises an elbow body, a connecting flange, a locking assembly and a hinge assembly, the elbow body is provided with a hinge end and a locking end, and the hinge end is provided with two shaft sleeve parts which are coaxially arranged at intervals; a sealing ring is arranged between the connecting flange and the bent pipe body; the locking assembly can lock the locking end to the connecting flange, and the locking height is adjustable. The hinge assembly comprises a rotating shaft, an adjusting shaft and a locking piece, the rotating shaft is arranged in the two shaft sleeve parts in a penetrating mode so that the elbow body can be hinged to the connecting flange, the first end of the adjusting shaft is arranged on the rotating shaft in a sleeving mode and located in the gap between the two shaft sleeve parts, and the second end of the adjusting shaft is locked to the connecting flange in a height-adjustable mode through the locking piece. The sealing performance between the elbow body and the connecting flange is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of concrete pumping equipment, and particularly relates to a hinge elbow pipe connecting device and a concrete pumping equipment. BACKGROUND

[0002] The hinge elbow pipe, as an important component of the concrete pumping equipment, is arranged at a discharge port of a pump truck and has the function of changing the flow direction of concrete to ensure that the concrete can be smoothly delivered to a designated position during construction. Since some concrete is often left in the pipe of the hinge elbow pipe during the pumping process, the operator needs to open the hinge elbow pipe and thoroughly flush the concrete in the hinge elbow pipe after each construction.

[0003] Due to the relatively high frequency of flushing operation, the hinge elbow pipe connecting device should have the characteristics of flexible opening and closing, so that the operation can be quickly and conveniently performed during flushing. In order to prevent concrete from leaking out during pumping and ensure the cleanliness of the working environment, the sealing property of the hinge elbow pipe connecting device should also be considered.

[0004] At present, the hinge elbow pipe connecting device usually includes an elbow pipe body and a connecting flange. A rotating shaft is arranged on one side of the elbow pipe body to enable the elbow pipe body to rotate about the rotating shaft to open or close. A locking assembly that can lock the elbow pipe body and the connecting flange is arranged on the other side of the elbow pipe body. However, the existing hinge elbow pipe connecting device has only one side provided with the locking assembly, and the sealing ring between the elbow pipe body and the connecting flange is prone to failure due to uneven stress, resulting in low sealing reliability of the hinge elbow pipe connecting device. CONTENT OF THE UTILITY MODEL

[0005] In view of the above defects or deficiencies, the application provides a hinge elbow pipe connecting device and a concrete pumping equipment, aiming to solve the technical problem that the sealing ring in the existing hinge elbow pipe connecting device is prone to failure.

[0006] In order to achieve the above purpose, the application provides a hinge elbow pipe connecting device, wherein the hinge elbow pipe connecting device includes an elbow pipe body, a connecting flange, a locking assembly and a hinge assembly. The elbow pipe body has a hinge end and a locking end, and the hinge end is provided with two shaft sleeve portions arranged coaxially and spaced apart. A sealing ring is arranged between the connecting flange and the elbow pipe body. The locking assembly can lock the locking end to the connecting flange, and the locking height is adjustable. The hinge assembly includes a rotating shaft, an adjusting shaft and a locking piece. The rotating shaft is arranged in the two shaft sleeve portions to hinge the elbow pipe body to the connecting flange. The first end of the adjusting shaft is sleeved on the rotating shaft and located in the space between the two shaft sleeve portions. The second end of the adjusting shaft is locked to the connecting flange in an adjustable height manner through the locking piece.

[0007] In the embodiment of the present application, the second end of the adjusting shaft is provided with an external thread section, the locking member includes a first locking nut and a second locking nut, and the first locking nut and the second locking nut are both sleeved on the external thread section and are arranged on opposite sides of the connecting flange.

[0008] In the embodiment of the present application, the connecting flange is provided with a connecting hole, the hinge assembly further includes a rotation-stopping member, the number of the external thread sections is two, the two external thread sections are sequentially and spacedly arranged along the axial direction of the adjusting shaft, the adjusting shaft between the two external thread sections is provided as a rotation-stopping shaft section, the shaft diameter of the rotation-stopping shaft section is smaller than the shaft diameter of the external thread section, the rotation-stopping shaft section is provided with a first mounting groove for accommodating the rotation-stopping member, and the rotation-stopping member abuts against the hole wall of the connecting hole.

[0009] In the embodiment of the present application, a second mounting groove is formed in the hole wall of the connecting hole and is arranged in a penetrating manner along the axial direction of the connecting flange, and the side of the rotation-stopping member away from the first mounting groove is located in the second mounting groove.

[0010] In the embodiment of the present application, the rotating shaft includes a rotating portion penetrating the two shaft sleeve portions and a stop portion arranged at one end of the rotating portion, a stop step surface is formed between the rotating portion and the stop portion, and the stop step surface abuts against the shaft sleeve portion.

[0011] In the embodiment of the present application, a mounting rib plate is arranged between the elbow body and the shaft sleeve portion.

[0012] In the embodiment of the present application, the locking end is provided with a through hole, the locking assembly includes a plug rod and a plug pin, one end of the plug rod is connected with the connecting flange, the other end of the plug rod penetrates the through hole and is provided with a wedge-shaped locking port penetrating in a radial direction, the wedge-shaped locking port is partially located in the through hole, the plug pin is formed with a wedge rod portion, the wedge rod portion is wedge-mounted in the wedge-shaped locking port, so as to lock the locking end to the connecting flange and adjust the locking height.

[0013] In the embodiment of the present application, the plug pin is further formed with a handle portion, and the handle portion is arranged in a bent and extended manner from one end of the wedge rod portion.

[0014] In the embodiment of the present application, the locking assembly further includes a connecting chain connected with the elbow body, and one end of the handle portion away from the wedge rod portion is provided with a connecting port for the connecting chain to penetrate.

[0015] In the embodiment of the present application, the front end of the wedge rod portion for wedge-mounting through the wedge-shaped locking port is provided as a guide section, and the cross-sectional area of the guide section is arranged in a tapered manner along the wedge-mounting direction of the wedge rod portion.

[0016] In the embodiment of the present application, the locking assembly further includes a fixing pin, at least two fixing holes are arranged on the wedge rod portion and are sequentially and spacedly arranged along the wedge-mounting direction of the wedge rod portion, and the fixing pin is inserted into the fixing hole protruding from the wedge-shaped locking port.

[0017] In addition, the application further provides a concrete pumping device, which comprises the hinge elbow connecting device as described above.

[0018] Through the technical scheme, the hinge elbow connecting device provided by the application has the following beneficial effects:

[0019] The sealing ring is arranged between the connecting flange and the elbow body, and can be arranged on the connecting flange or the elbow body. The connecting flange and the elbow body are sealingly connected by extruding the sealing ring, so that concrete is prevented from leaking during pumping and the working environment is ensured to be clean. The locking assembly can lock the locking end to the connecting flange to realize the connection between the elbow body and the connecting flange. The locking height is the distance between the elbow body and the connecting flange, and the locking height is adjustably arranged, that is, the locking assembly can adjust the distance between the elbow body and the connecting flange, so that the sealing ring between the elbow body and the connecting flange is extruded to realize the sealing connection between the elbow body and the connecting flange.

[0020] The rotating shaft of the hinging assembly is arranged in the two shaft sleeve portions, so that the elbow body can rotate around the rotating shaft. In the flushing state, the elbow body is opened, that is, the elbow body rotates around the rotating shaft to separate the elbow body from the connecting flange, so that the elbow body can be flushed. In the pumping state, the elbow body is closed, that is, the elbow body rotates around the rotating shaft to approach the connecting flange, so that the elbow body can be sealingly connected to the connecting flange to prevent concrete from leaking during pumping.

[0021] The adjusting shaft of the hinging assembly is located in the space between the two shaft sleeve portions. The first end of the adjusting shaft is sleeved on the rotating shaft, and the second end of the adjusting shaft is adjustably locked to the connecting flange by the locking member. The height of the second end of the adjusting shaft is adjusted, the second end of the adjusting shaft drives the first end of the adjusting shaft to move, the first end of the adjusting shaft drives the rotating shaft to move, and the rotating shaft drives the two shaft sleeve portions to move, so as to adjust the distance between the elbow body and the connecting flange.

[0022] In the application, the distance between the locking end of the elbow body and the connecting flange can be adjusted by the locking assembly, and the distance between the hinging end of the elbow body and the connecting flange can be adjusted by the hinging assembly, so that the stress on the sealing ring is more uniform, the sealing ring is less likely to be sheared and fail, the service life of the sealing ring is prolonged, and the sealing performance between the elbow body and the connecting flange is improved.

[0023] Other features and advantages of the application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings are included to provide a further understanding of embodiments of the application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the application, and together with the description serve to explain principles of embodiments of the application. Other embodiments of the application will be readily apparent to those of ordinary skill in the art from the drawings in conjunction with the detailed description of the embodiments. In the drawings:

[0025] Figure 1 is a structural schematic view of a hinge elbow connecting device according to an embodiment of the application in one perspective view;

[0026] Figure 2 is a structural schematic view of a hinge elbow connecting device according to an embodiment of the application in another perspective view;

[0027] Figure 3 is a sectional schematic view of a hinge elbow connecting device according to an embodiment of the application in one perspective view;

[0028] Figure 4 is a sectional schematic view of a hinge elbow connecting device according to an embodiment of the application in another perspective view.

[0029] Legend of reference signs

[0030] 10 elbow body 322 handle part

[0031] 11 hinge end 3221 connecting part

[0032] 12 locking end 40 hinge assembly

[0033] 121 through hole 41 rotating shaft

[0034] 13 shaft sleeve part 411 rotating part

[0035] 14 mounting rib plate 412 stop part

[0036] 20 connecting flange 42 adjusting shaft

[0037] 21 connecting hole 421 first end

[0038] 22 second mounting groove 422 second end

[0039] 30 locking assembly 423 outer threaded section

[0040] 31 insertion rod 424 rotation-stopping shaft section

[0041] 311 wedge-shaped locking opening 425 first mounting groove

[0042] 32 insertion pin 43 locking member

[0043] 321 Wedge section 431 First locking nut

[0044] 3211 Guide section 432 Second locking nut

[0045] 3212 Fixing hole 44 Anti-rotation component Detailed Implementation

[0046] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0047] The hinged pipe connection device of this application is described below with reference to the accompanying drawings.

[0048] like Figures 1 to 4 As shown, this application provides a hinged pipe bending connection device, which includes a pipe bending body 10, a connecting flange 20, a locking assembly 30, and a hinge assembly 40. The pipe bending body 10 has a hinge end 11 and a locking end 12. The hinge end 11 is provided with two coaxial and spaced-apart bushing portions 13. A sealing ring is provided between the connecting flange 20 and the pipe bending body 10. The locking assembly 30 can lock the locking end 12 to the connecting flange 20, and the locking height is adjustable. The hinge assembly 40 includes a rotating shaft 41, an adjusting shaft 42, and a locking member 43. The rotating shaft 41 passes through the two bushing portions 13 to hinge the pipe bending body 10 onto the connecting flange 20. The first end 421 of the adjusting shaft 42 is sleeved on the rotating shaft 41 and located in the gap between the two bushing portions 13. The second end 422 of the adjusting shaft 42 is height-adjustably locked onto the connecting flange 20 by the locking member 43.

[0049] The left end of the bend body 10 is the locking end 12, and the right end is the hinge end 11. The hinge end 11 has two spaced-apart bushings 13, which are coaxially arranged and spaced apart along the front-to-back direction, with a gap between them. A sealing ring is provided between the connecting flange 20 and the bend body 10. The sealing ring can be placed on either the connecting flange 20 or the bend body 10. Compressing the sealing ring ensures a sealed connection between the connecting flange 20 and the bend body 10, preventing concrete leakage during pumping and ensuring a clean working environment. The locking assembly 30 can lock the locking end 12 onto the connecting flange 20 to achieve the connection between the bend body 10 and the connecting flange 20. The locking height is the distance between the bend body 10 and the connecting flange 20. The locking height is adjustable, meaning that the locking assembly 30 can adjust the distance between the bend body 10 and the connecting flange 20 so that the sealing ring between the bend body 10 and the connecting flange 20 is compressed, thereby achieving a sealed connection between the bend body 10 and the connecting flange 20.

[0050] The rotating shaft 41 of the hinged assembly 40 is arranged through the two shaft sleeve portions 13, so that the elbow body 10 can rotate around the rotating shaft 41. In the flushing state, the elbow body 10 is opened, that is, the elbow body 10 rotates around the rotating shaft 41 to separate the elbow body 10 from the connecting flange 20, so that the elbow body 10 can be flushed. In the pumping state, the elbow body 10 is closed, that is, the elbow body 10 rotates around the rotating shaft 41 to approach the connecting flange 20, so that the elbow body 10 can be sealingly connected with the connecting flange 20 to prevent concrete from leaking during pumping.

[0051] The adjusting shaft 42 of the hinged assembly 40 is located in the space between the two shaft sleeve portions 13. The first end 421 of the adjusting shaft 42 is sleeved on the rotating shaft 41, and the second end 422 of the adjusting shaft 42 is adjustably locked to the connecting flange 20 by the locking member 43. By adjusting the height of the second end 422 of the adjusting shaft 42, the second end 422 of the adjusting shaft 42 drives the first end 421 of the adjusting shaft 42 to move, the first end 421 of the adjusting shaft 42 drives the rotating shaft 41 to move, and the rotating shaft 41 drives the two shaft sleeve portions 13 to move, so as to adjust the distance between the elbow body and the connecting flange 20.

[0052] In the present application, the distance between the locking end 12 of the elbow body 10 and the connecting flange 20 can be adjusted by the locking assembly 30, and the distance between the hinged end 11 of the elbow body 10 and the connecting flange 20 can be adjusted by the hinged assembly 40, so that the stress on the sealing ring is more uniform, the sealing ring is less likely to be sheared and failed, the service life of the sealing ring is prolonged, and the sealing performance between the elbow body 10 and the connecting flange 20 is improved.

[0053] In the embodiment of the present application, referring to Figure 1 and Figure 3 , the second end 422 of the adjusting shaft 42 is provided with an external thread segment 423, the locking member 43 includes a first locking nut 431 and a second locking nut 432, and the first locking nut 431 and the second locking nut 432 are both sleeved on the external thread segment 423 and are arranged on opposite sides of the connecting flange 20.

[0054] The first locking nut 431 and the second locking nut 432 are both sleeved on the external thread segment 423, the first locking nut 431 abuts against one side of the connecting flange 20 away from the elbow body 10, and the second locking nut 432 abuts against one side of the connecting flange 20 close to the elbow body 10. When it is necessary to adjust the height of the second end 422 of the adjusting shaft 42, the second locking nut 432 is first moved downward, so that the adjusting shaft 42 can move upward, and then the first locking nut 431 is moved to abut against the connecting flange 20, so as to fix the adjusting shaft 42. The locking member 43 and the adjusting shaft 42 are connected by threads, and the thread connection can be self-locking, so that the connection between the locking member 43 and the adjusting shaft 42 is stable and reliable.

[0055] By arranging the first locking nut 431 and the second locking nut 432 on opposite sides of the connecting flange 20, the force on the adjusting shaft 42 is more uniform, and the connection between the adjusting shaft 42 and the connecting flange 20 is more stable and reliable.

[0056] In another embodiment, only the first locking nut 431 can be provided, and the second locking nut 432 is not provided. By tightening the first locking nut 431, the height of the second end 422 of the adjusting shaft 42 can be adjusted.

[0057] In other embodiments, the locking member 43 can be a pin shaft, and the adjusting shaft 42 is provided with a plurality of pin holes distributed along the axial direction. The pin shaft can be inserted into any one of the pin holes and abut against the side of the connecting flange 20 away from the elbow body 10. By inserting the pin shaft into different pin holes, the height of the second end 422 of the adjusting shaft 42 can be adjusted.

[0058] In the embodiments of the present application, please refer to Figure 3 The connecting flange 20 is provided with a connecting hole 21, and the hinge assembly 40 further comprises a rotation-stopping member 44. The number of the outer threaded segments 423 is two, and the two outer threaded segments 423 are sequentially and spaced apart along the axial direction of the adjusting shaft 42. The adjusting shaft 42 between the two outer threaded segments 423 is provided as a rotation-stopping shaft segment 424. The shaft diameter of the rotation-stopping shaft segment 424 is smaller than the shaft diameter of the outer threaded segment 423, and the rotation-stopping shaft segment 424 is provided with a first mounting groove 425 for accommodating the rotation-stopping member 44. The rotation-stopping member 44 abuts against the hole wall of the connecting hole 21.

[0059] The first locking nut 431 and the second locking nut 432 are respectively threadedly connected with the two outer threaded segments 423. The rotation-stopping shaft segment 424 is located between the two outer threaded segments 423, and the shaft diameter of the rotation-stopping shaft segment 424 is smaller than the shaft diameter of the outer threaded segment 423. The rotation-stopping shaft segment 424 is provided with the first mounting groove 425, and the first mounting groove 425 is mounted with the rotation-stopping member 44. The rotation-stopping member 44 abuts against the hole wall of the connecting hole 21 to prevent the adjusting shaft 42 from rotating, so that the elbow body only rotates around the rotating shaft 41, but does not rotate around the adjusting shaft 42, facilitating the resetting of the elbow body to enable the elbow body to more smoothly switch between the flushing state and the pumping state.

[0060] Specifically, the rotation-stopping member 44 can be made of a material capable of elastic deformation. During installation, the rotation-stopping member 44 is first compressed to enable the rotation-stopping member 44 to enter the connecting hole 21, and then the rotation-stopping member 44 elastically recovers in the connecting hole 21, so that the rotation-stopping member 44 abuts against the hole wall of the connecting hole 21. Friction is generated between the rotation-stopping member 44 and the hole wall of the connecting hole 21 to prevent the adjusting shaft 42 from rotating.

[0061] In the embodiments of the present application, please refer to Figure 3The hole wall of the connecting hole 21 is provided with a second mounting groove 22 penetrating along the axial direction of the connecting flange 20, and the rotation stopping piece 44 is located in the second mounting groove 22 away from the side of the first mounting groove 425.

[0062] The second mounting groove 22 penetrates along the axial direction of the connecting flange 20, the rotation stopping piece 44 extends along the axial direction of the adjusting shaft 42, and the rotation stopping piece 44 can move along the axial direction of the adjusting shaft 42 relative to the second mounting groove 22. The rotation stopping piece 44 is located in the second mounting groove 22 away from the side of the first mounting groove 425, and the groove wall of the second mounting groove 22 limits the rotation stopping piece 44 to prevent the rotation stopping piece 44 from rotating. The rotation stopping piece 44 cooperates with the groove wall of the second mounting groove 22 to prevent the adjusting shaft 42 from rotating.

[0063] Specifically, the rotation stopping piece 44 and the rotation stopping shaft segment 424 can be an integrally formed part, saving the assembly steps between the rotation stopping piece 44 and the rotation stopping shaft segment 424 and reducing the assembly error between the rotation stopping piece 44 and the rotation stopping shaft segment 424.

[0064] The rotation stopping piece 44 and the rotation stopping shaft segment 424 can also be a split structure, facilitating replacement of the rotation stopping piece 44 after wear and improving the use flexibility of the rotation stopping piece 44.

[0065] In the embodiments of the present application, please refer to Figure 3 The rotating shaft 41 includes a rotating portion 411 penetrating the two shaft sleeve portions 13 and a stop portion 412 provided at one end of the rotating portion 411, and a stop step surface is formed between the rotating portion 411 and the stop portion 412, and the stop step surface abuts against the shaft sleeve portion 13.

[0066] One end of the rotating portion 411 is connected with the stop portion 412, the rotating portion 411 penetrates the two shaft sleeve portions 13, the first end 421 of the adjusting shaft 42 is sleeved on the rotating portion 411, and the elbow pipe body 10 can rotate around the rotating portion 411. The cross-sectional area of the stop portion 412 is larger than that of the rotating portion 411, a stop step surface is formed between the stop portion 412 and the rotating portion 411, the stop step surface abuts against the shaft sleeve portion 13, the stop step surface is used for positioning, and the connection between the rotating portion 411 and the adjusting shaft 42 is facilitated.

[0067] In the embodiments of the present application, please refer to Figure 1 and Figure 3 The two mounting rib plates 14 are connected between the elbow pipe body 10 and the shaft sleeve portion 13. One end of each of the two mounting rib plates 14 is connected with the elbow pipe body 10, and the other end of each of the two mounting rib plates 14 is connected with the side of the two shaft sleeve portions 13 away from the hollow space. The two mounting rib plates 14 are arranged between the elbow pipe body 10 and the shaft sleeve portion 13 to form a hollow space for the adjusting shaft 42 to insert between the two shaft sleeve portions 13.

[0068] The one end of the mounting rib plate 14 connected with the elbow pipe body 10 is larger than the one end of the mounting rib plate 14 connected with the shaft sleeve 13, so as to improve the connecting strength between the mounting rib plate 14 and the elbow pipe body 10, and improve the structural stability.

[0069] In the embodiment of the present application, referring to Figure 4 , the locking end 12 is provided with a through hole 121, the locking assembly 30 comprises a plug rod 31 and a plug pin 32, one end of the plug rod 31 is connected with the connecting flange 20, the other end of the plug rod 31 passes through the through hole 121 and is provided with a wedge-shaped locking port 311 penetrating in the radial direction, the wedge-shaped locking port 311 is partially located in the through hole 121, the plug pin 32 is formed with a wedge rod part 321, the wedge rod part 321 can be wedged and arranged in the wedge-shaped locking port 311, so as to lock the locking end 12 to the connecting flange 20 and adjust the locking height.

[0070] The upper end of the plug rod 31 is connected with the connecting flange 20, the lower end of the plug rod 31 passes through the through hole 121 on the locking end 12. And, the lower end of the plug rod 31 is provided with a wedge-shaped locking port 311 penetrating in the radial direction, the wedge-shaped locking port 311 is partially located in the through hole 121. The wedge rod part 321 can be wedged and arranged in the wedge-shaped locking port 311, and the upper end of the wedge rod part 321 abuts against the locking end 12, so as to lock the locking end 12 to the connecting flange 20. In the direction of wedging the wedge rod part 321, that is, Figure 4 from the rear to the front direction, the wedge-shaped locking port 311 is inclinedly arranged towards the direction close to the connecting flange 20.

[0071] By adjusting the depth of the wedge rod part 321 inserted into the wedge-shaped locking port 311, the distance between the elbow pipe body and the connecting flange 20 is adjusted, so as to realize the adjustable locking height. Specifically, the wedge rod part 321 is inserted into the wedge-shaped locking port 311 from the rear to the front, so that the depth of the wedge rod part 321 inserted into the wedge-shaped locking port 311 is increased, the force of the wedge rod part 321 extruding the locking end 12 to move upward is increased, so that the distance between the locking end 12 and the connecting flange 20 is reduced. The wedge rod part 321 is pulled out of the wedge-shaped locking port 311 from the front to the rear, so that the depth of the wedge rod part 321 inserted into the wedge-shaped locking port 311 is reduced, the force of the wedge rod part 321 extruding the locking end 12 to move upward is reduced, so that the distance between the locking end 12 and the connecting flange 20 is increased.

[0072] In the embodiment of the present application, referring to Figure 4 , the plug pin 32 is further formed with a handle part 322, the handle part 322 is bently and extendingly arranged from one end of the wedge rod part 321. By arranging the handle part 322, the operator can hold the plug pin 32 more conveniently, and insert or pull out the wedge rod part 321 from the wedge-shaped locking port 311, so that the plug pin 32 is used more conveniently.

[0073] In the embodiment of the present application, referring to Figure 4The locking assembly 30 further comprises a connecting chain (not shown in the figure) connected with the elbow body 10. The handle portion 322 has a connecting port 3221 at the end away from the wedge rod portion 321, and the connecting chain is arranged to pass through the connecting port 3221. The connecting chain is connected with the elbow body 10 and passes through the connecting port 3221, so that the pin 32 is prevented from being lost, and the use of the pin 32 is more convenient.

[0074] In the embodiments of the present application, referring to Figure 4 The wedge rod portion 321 is provided with a guide section 3211 at the end for being inserted into the wedge-shaped locking port 311. The cross-sectional area of the guide section 3211 is gradually reduced along the insertion direction of the wedge rod portion 321.

[0075] Along the insertion direction of the wedge rod portion 321 into the wedge-shaped locking port 311, the cross-sectional area of the guide section 3211 is gradually reduced, that is, the cross-sectional area of the end of the guide section 3211 away from the handle portion 322 is smaller than the cross-sectional area of the end of the guide section 3211 close to the handle portion 322. The guide section 3211 is arranged to guide the insertion of the wedge rod portion 321 into the wedge-shaped locking port 311, so that the installation of the pin 32 is more convenient.

[0076] In the embodiments of the present application, the locking assembly 30 further comprises a fixing pin (not shown in the figure), and the wedge rod portion 321 is provided with at least two fixing holes 3212 arranged in sequence and spaced apart along the insertion direction of the wedge rod portion 321. The fixing pin can be inserted into the fixing hole 3212 extending out of the wedge-shaped locking port 311.

[0077] As shown in Figure 4 , the wedge rod portion 321 is provided with four fixing holes 3212 arranged in sequence and spaced apart along the insertion direction of the wedge rod portion 321 at the position close to the wedge-shaped locking port 311. The fixing pin can be inserted into any one of the fixing holes 3212 extending out of the wedge-shaped locking port 311. The fixing pin and the fixing hole 3212 are arranged to fix the position of the wedge rod portion 321, so that the wedge rod portion 321 is prevented from loosening and moving downward to reduce the sealing performance between the elbow body 10 and the connecting flange 20. The fixing pin is selected to be inserted into different fixing holes 3212 to adjust the position of the wedge rod portion 321.

[0078] In other embodiments, the number of the fixing holes 3212 can be two, three, five or other numbers, and the number of the fixing holes 3212 can be flexibly adjusted according to actual needs, and the present application does not limit the number of the fixing holes 3212.

[0079] The hinge elbow pipe connecting device in the application, by tightening the first locking nut 431, the elbow pipe body 10 and the connecting flange 20 are attached, then the wedge rod part 321 of the bolt 32 is inserted into the wedge-shaped locking port 311, so that the locking end 12 of the elbow pipe body 10 is locked on the connecting flange 20, so that the stress of the sealing ring is more uniform, and the sealing performance between the elbow pipe body 10 and the connecting flange 20 is improved. During daily use, the wedge rod part 321 of the bolt 32 is pulled out of the wedge-shaped locking port 311, so that the elbow pipe body 10 and the connecting flange 20 can be unlocked, so that the elbow pipe body 10 can be rotated around the rotating shaft 41 to open, and when the gap between the elbow pipe body 10 and the connecting flange 20 is found, the second locking nut 432 is moved downward, the position of the adjusting shaft 42 is adjusted, and the first locking nut 431 is tightened again.

[0080] In addition, the utility model also provides a concrete pumping equipment, and the concrete pumping equipment comprises the hinge elbow pipe connecting device as described above. The hinge elbow pipe connecting device is arranged at the pump truck discharge port of the concrete pumping equipment.

[0081] Since the concrete pumping equipment adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0082] In the description of the application, it should be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In the description of the application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0083] In the application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0084] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0085] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A hinged pipe bending connection device, characterized in that, The hinged bend connection device includes: The bent pipe body (10) has a hinge end (11) and a locking end (12), wherein the hinge end (11) is provided with two coaxial and spaced bushings (13); A connecting flange (20) is provided with a sealing ring between the connecting flange (20) and the elbow body (10); The locking assembly (30) can lock the locking end (12) to the connecting flange (20) and the locking height is adjustable; The hinge assembly (40) includes a rotating shaft (41), an adjusting shaft (42), and a locking member (43). The rotating shaft (41) passes through the two bushing portions (13) to hinge the bent pipe body (10) onto the connecting flange (20). The first end (421) of the adjusting shaft (42) is sleeved on the rotating shaft (41) and located in the gap between the two bushing portions (13). The second end (422) of the adjusting shaft (42) is height-adjustably locked onto the connecting flange (20) by the locking member (43).

2. The hinged pipe bending connection device according to claim 1, characterized in that, The second end (422) of the adjusting shaft (42) is provided with an external thread section (423). The locking member (43) includes a first locking nut (431) and a second locking nut (432). The first locking nut (431) and the second locking nut (432) are both sleeved on the external thread section (423) and are respectively located on opposite sides of the connecting flange (20).

3. The hinged pipe bending connection device according to claim 2, characterized in that, The connecting flange (20) has a connecting hole (21); the hinge assembly (40) also includes an anti-rotation member (44), and there are two external thread sections (423). The two external thread sections (423) are arranged alternately along the axial direction of the adjusting shaft (42). The adjusting shaft (42) between the two external thread sections (423) is set as an anti-rotation shaft section (424). The shaft diameter of the anti-rotation shaft section (424) is smaller than the shaft diameter of the external thread section (423), and a first mounting groove (425) is provided for the anti-rotation member (44) to be accommodated. The anti-rotation member (44) abuts against the hole wall of the connecting hole (21).

4. The hinged pipe bending connection device according to claim 3, characterized in that, The connecting hole (21) has a second mounting groove (22) that extends through the connecting flange (20) along its axial direction. The anti-rotation member (44) is located in the second mounting groove (22) on the side away from the first mounting groove (425).

5. The hinged pipe bending connection device according to claim 1, characterized in that, The rotating shaft (41) includes a rotating part (411) passing through the two bushing portions (13) and a stop portion (412) located at one end of the rotating part (411). A stop step surface is formed between the rotating part (411) and the stop portion (412), and the stop step surface abuts against the bushing portion (13); and / or, A mounting rib (14) is provided between the bent pipe body (10) and the bushing part (13).

6. The hinged pipe bending connection device according to any one of claims 1 to 5, characterized in that, The locking end (12) has a through hole (121). The locking assembly (30) includes a rod (31) and a pin (32). One end of the rod (31) is connected to the connecting flange (20). The other end of the rod (31) passes through the through hole (121) and has a radially penetrating wedge-shaped locking port (311). The wedge-shaped locking port (311) is partially located inside the through hole (121). The pin (32) has a wedge-shaped part (321). The wedge-shaped part (321) can be wedge-fitted into the wedge-shaped locking port (311) to lock the locking end (12) to the connecting flange (20) and the locking height is adjustable.

7. The hinged pipe bending connection device according to claim 6, characterized in that, The pin (32) also has a handle (322) which extends from one end of the wedge (321) by bending.

8. The hinged pipe bending connection device according to claim 7, characterized in that, The locking assembly (30) also includes a connecting chain connected to the bent tube body (10), and the handle (322) has a connection port (3221) at the end away from the wedge (321) for the connecting chain to pass through.

9. The hinged pipe bending connection device according to claim 6, characterized in that, The wedge portion (321) is used for wedging through the wedge-shaped locking port (311), and its front end is designated as a guide section (3211). The cross-sectional area of ​​the guide section (3211) is gradually reduced along the wedging direction of the wedge portion (321); and / or, The locking assembly (30) also includes a fixing pin. The wedge portion (321) is provided with at least two fixing holes (3212). The at least two fixing holes (3212) are arranged sequentially at intervals along the wedge insertion direction of the wedge portion (321). The fixing pin can be inserted into the fixing hole (3212) that extends out of the wedge-shaped locking port (311).

10. A concrete pumping device, characterized in that, The concrete pumping equipment includes a hinged bend connection device according to any one of claims 1 to 9.

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