A concrete batching and conveying device

Abstract

The present invention belongs to the technical field of concrete batching and conveying, and relates to a concrete batching and conveying device, which includes a cylinder body, a screw shaft, end caps, end plates, springs and a plurality of studs. The downstream end of the cylinder body is an open end, and a plurality of flange arms are formed on the outer wall. The end cap is arranged at the open end of the cylinder body and is provided with an annular groove that can be inserted and matched with the cylinder body, and a shaft hole corresponding to and matched with the screw shaft, so that the end cap can move axially relative to the cylinder body. The inner bottom surface of the end cap is formed as an arc surface, and a plurality of strip-shaped protrusions are distributed on the inner side wall. The end plate and the spring are both sleeved on the screw shaft, and both ends of the spring are in contact with the end plate and the end cap respectively. Through holes matching the two ends of the studs are formed on the radial flange of the end plate and each flange arm, and the studs can limit the distance between the cylinder body and the end plate. The present invention can improve the extrusion condition of the material at the end of the cylinder body, enable the material to bear elastic extrusion force, and be continuously divided and dispersed, can inhibit the occurrence of excessive material caking phenomenon, and prolong the cleaning cycle.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete batching and conveying, and particularly relates to a concrete batching and conveying device. Background Art

[0002] In the process of concrete batching, multiple auger conveyors are often used to transport materials such as aggregate bins, sand and gravel bins, and cement bins to the mixer in proportion for uniform mixing. Auger conveyors, also known as screw conveyors, are widely used in concrete batching because of their advantages such as stable conveying, convenient metering, good sealing throughout the conveying process, no leakage, and no dust pollution. Figure 1 As shown, the existing concrete batching conveyor / conveyor device mainly includes an auger unit 10 and a motor assembly that drives the auger shaft 12 in the auger unit 10 to rotate. The two ends of the barrel 11 of the auger unit 10 are supported on the frame, and a feed port and a discharge port 111 are respectively provided at both ends of the barrel 11. The end of the auger shaft 12 close to the discharge port 111 extends relatively out of the barrel 11 and matches the end support 121 fixed on the frame, so that the axial direction of the auger shaft 12 can remain stable and can deliver the material from the feed port side to the discharge port 111 side during the rotation. During operation, as the auger shaft 12 rotates rapidly in the barrel 11, it pushes the material to move in one direction in the barrel cavity and continuously approaches the discharge port 111. It can be seen that during the feeding process, the auger blades promote the movement of the material by pushing the material. Because the end of the cylinder 11 near the discharge port 111 is a closed end and the material cannot be quickly discharged to the outside of the cylinder 11 through the discharge port 111 after being pushed to the end, it is easy to be squeezed toward the inner end face of the cylinder 11 at the end, and material accumulation occurs near the inner end face, that is, the material agglomeration phenomenon. During long-term operation, the amount of material accumulated near the inner end face will gradually increase and the degree of compaction will also increase, and it will gradually turn into an excessive agglomeration state, and the agglomeration at this position is located in a dead corner area that is difficult to clean, and it is difficult to be cleaned out under non-shutdown conditions. As the degree of agglomeration continues to increase, if it is not cleaned in time, it is easy to cause a series of problems such as increased equipment wear, poor operational stability, high energy consumption due to increased load, and high noise. Frequent shutdowns for cleaning are bound to lead to reduced production efficiency and increased maintenance and upkeep costs. Summary of the Invention

[0003] In order to overcome the problem of excessive material agglomeration at the end of the cylinder, the present invention provides a concrete batching and conveying device, which can improve the extrusion condition of the material at the end of the cylinder, so that the material can be continuously and divided and dispersed while bearing the elastic extrusion force, thereby suppressing the occurrence of excessive material agglomeration and significantly extending the cleaning cycle.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows: A concrete batching and conveying device includes a driving motor assembly and a auger unit. The auger unit includes a cylinder body and an auger shaft disposed in the cavity of the cylinder body. The cylinder body is provided with a feed inlet and a discharge outlet. The driving motor assembly is matched with one end of the auger shaft and can drive the auger shaft to rotate in the cylinder body, so as to convey materials from one side of the feed inlet to one side of the discharge outlet, achieving the purpose of material conveyance.

[0005] In the technical solution of the present application, the downstream end of the cylinder body, that is, the end close to the discharge outlet, is an open end. At a position on the outer wall of the cylinder body and close to the open end, a plurality of flange arms are distributed and spaced apart in the circumferential direction, and each flange arm extends radially. The main purpose of dispersedly arranging a plurality of flange arms is to avoid the discharge outlet. In addition, the technical solution of the present application further includes an end cap, an end plate, a spring, and a plurality of studs corresponding to and matching with each flange arm.

[0006] The end cap is disposed at the open end of the cylinder body. Specifically, an annular groove capable of being inserted and matched with the open end of the cylinder body is formed on the end face of the port side of the end cap, and a shaft hole is formed on the bottom wall of the end cap. The auger shaft passes through the shaft hole and extends out of the cylinder body. The insertion and matching structure established between the end cap and the cylinder body, and the matching structure established between the end cap and the auger shaft enable the end cap to move reciprocally along the axial direction relative to the cylinder body. In addition, the inner bottom surface of the end cap forms a concave arc surface, and the arc of the arc surface extends along the radial direction of the end cap. On the inner wall of the end cap, at a position close to the inner bottom surface, a plurality of strip-shaped teeth are distributed and spaced apart in the circumferential direction and all extend in the axial direction. It should be emphasized that the so-called strip-shaped teeth extending in the axial direction means that the strip-shaped teeth generally extend in the axial direction, which includes the case where the strip-shaped teeth extend in the axial extension direction of the axis of the end cap, and the case where the extension direction of the strip-shaped teeth in the axial direction is deflected toward the same side relative to the axial extension direction of the axis of the end cap (that is, the strip-shaped teeth can be inclined toward the clockwise side at the same time, or can be inclined toward the counterclockwise side at the same time).

[0007] Both the end plate and the spring are sleeved on the shaft section of the auger shaft extending out of the end cap, and both ends of the spring are in contact with the opposite end faces between the end plate and the end cap. A radial flange is formed on the end plate, and through holes capable of corresponding to and matching with both ends of each stud are respectively formed on the radial flange and each flange arm, and the axial extension direction of the axis of each through hole is parallel to the axial extension direction of the cylinder body.

[0008] External thread sections are formed at both ends of the stud. After nuts are respectively arranged on the external thread sections at both ends, the axial distance between the cylinder body and the end plate can be limited, and at the same time, the initial compression state of the spring can also be limited.

[0009] Optionally, the extending directions of the strip-shaped protrusions in the axial direction are all deflected to the same side relative to the extending direction of the axis. Specifically, they can be deflected to the clockwise side or the counterclockwise side.

[0010] Optionally, the multiple strip-shaped protrusions are at least distributed on two coaxial inner peripheral surface segments, and each inner peripheral surface segment contains at least three strip-shaped protrusions. The length of the strip-shaped protrusions distributed relatively closer to the inner bottom surface of the end cap is greater than the length of the strip-shaped protrusions distributed relatively closer to the port side of the end cap. Preferably, the multiple strip-shaped protrusions respectively arranged in two adjacent inner peripheral surface segments are arranged in a relatively staggered state on the circumferential surface.

[0011] Optionally, a sleeve is sleeved on the auger shaft and the sleeve can be fixed relative to the auger shaft, that is, the sleeve cannot move axially relative to the auger shaft, but the auger shaft can still rotate relative to the sleeve. One end of the sleeve is correspondingly matched with the shaft hole, and the end cap can move axially relative to the sleeve. After the sleeve is provided, the spring is correspondingly sleeved outside the sleeve.

[0012] Optionally, an elastic sleeve assembly is arranged between the inner port of the shaft hole on the end cap and the end face of the sleeve extending into the end cap. The elastic sleeve assembly includes a cylindrical elastic member and annular members respectively fixed at both ends of the elastic member. One of the annular members is fixedly matched with the end cap, and the other annular member is fixedly matched with the end face of the sleeve, so that the elastic member can enclose the outer peripheral surface of the sleeve located between the inner port of the shaft hole and the end face of the sleeve inside it. When the end cap moves axially relative to the cylinder body, the elastic member can generate elastic deformation in the axial direction. The elastic member can be a cylindrical member in the shape of a spring made of an elastic material. Specifically, on the inner bottom surface of the end cap, an axial flange two is formed at the inner port of the shaft hole. The annular member connecting the end cap is matched with the axial flange two through a threaded structure; an axial convex ring is formed on the end face of the annular member connecting the sleeve, so that the axial convex ring contacts the end face of the sleeve and is fixed together by bolts or screws.

[0013] Optionally, an elastic sleeve assembly is arranged between the inner peripheral surface of the cylinder body and the end face of the end cap extending into the cylinder body. The elastic sleeve assembly includes a cylindrical elastic member and end rings respectively fixed at both ends of the elastic member. The outer peripheral surface of one of the end rings contacts the inner peripheral surface of the cylinder body and is fixed inside the cylinder body, and the other end ring is inserted at the port of the end cap and fixedly connected to the end cap, so that the elastic member can cover a section of the inner peripheral surface relatively near the inner side of the open end of the cylinder body. When the end cap moves axially relative to the cylinder body, the elastic member can generate elastic deformation in the axial direction.

[0014] Optionally, an annular slider and a sleeve are also included. An annular groove is formed on the end surface of the end plate facing the end cap, and a plurality of axial through holes are distributed alternately around the circumference on the inner bottom surface of the annular groove. A radial convex ring is formed on the inner wall of the annular slider near one end. The end of the spring facing the end plate contacts the end surface of the radial convex ring. The other end of the annular slider is formed with a plurality of push rods that correspond one-to-one with the axial through holes, and this end of the annular slider is inserted into the annular groove, with the free ends of the push rods extending outside the end plate, so that the annular slider can move axially relative to the end plate.

[0015] The sleeve is fixed to the auger shaft and is located relative to the end of the end plate facing away from the end cap. A cam structure is formed on the end surface of the sleeve facing the end plate. The free end of the push rod mates with the cam structure. During the synchronous rotation of the sleeve and the auger shaft, the cam structure can drive the annular slider relative to the end plate toward the end cap via the push rod. At the same time, it can also allow the annular slider to move away from the end cap and reset under the elastic thrust of the spring, thereby achieving the purpose of the annular slider's reciprocating movement relative to the end plate and relative to the sleeve along the axial direction of the auger shaft.

[0016] Optionally, the cam structure includes a plurality of recesses and a plurality of protrusions distributed on the same circumference. The number of push rods, recesses, and protrusions is the same. The recesses and protrusions are distributed alternately so that each push rod can simultaneously match with each recess and each protrusion. As the sleeve rotates, the protrusions on the cam structure simultaneously move to a position matching with the end of each push rod, and the cam structure can drive the annular slider relative to the end plate toward the end cap via the push rod; conversely, when the recesses on the cam structure simultaneously move to a position matching with the end of each push rod, the elastic thrust of the spring causes the annular slider to move away from the end cap, and this cycle repeats, so that the annular slider can move back and forth in the axial direction.

[0017] The beneficial effects of the present invention are as follows: in the technical solution of the present invention, the inner end face at the end of the cylinder near the discharge port has an elastic floating range in the axial direction and is formed into an arc surface, which can disperse the axial force of the material acting on the inner end face, and promote the inner end face to be able to move in the axial direction, so that the axial force on the material changes irregularly and continuously and is continuously divided by the strip-shaped protruding teeth, and has a certain dispersion flow ability, which can inhibit the situation where the material is easily compacted due to being almost stagnant. Therefore, the present invention improves the extrusion condition of the material at the end of the cylinder, so that the material is gradually divided and dispersed to the periphery under the influence of the elastic force, and is not easily compacted into a whole. It can inhibit the premature occurrence of excessive material agglomeration, and can significantly extend the cleaning cycle, which helps to reduce operating and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1Schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is Figure 1 Schematic diagram of the first state of the locally enlarged structure at position A in

[0020] Figure 3 It is Figure 1 Schematic diagram of the local structure at position A in the second state.

[0021] Figure 4 Schematic diagram of the right view structure of the cylinder body.

[0022] Figure 5 Schematic diagram of the sectional structure of the end cap.

[0023] Figure 6 Schematic diagram of the left view structure of the end cap.

[0024] Figure 7 In the improved scheme, it is a schematic diagram of the matching structure among the end cap, the cylinder body and the auger shaft.

[0025] Figure 8 It is Figure 7 Schematic diagram of the locally enlarged structure at position B in

[0026] Figure 9 Schematic diagram of the structure when related components such as an annular slider are arranged on the end plate.

[0027] Figure 10 Schematic diagram of the left view structure of the sleeve.

[0028] In the figure: 10 auger units, 11 cylinder body, 111 discharge port, 112 flange arm, 113 shoulder, 12 auger shaft, 121 end support; 20 end cap, 21 first axial flange, 22 annular groove, 23 strip-shaped tooth, 24 arc surface, 25 shaft hole, 251 second axial flange, 26 end face counterbore; 30 end plate, 31 annular flange, 32 annular counterbore; 40 spring; 50 stud, 51 first external thread section, 52 second external thread section; 60 shaft sleeve; 70 first elastic sleeve assembly, 71 first elastic member, 72 first end ring, 73 second end ring; 80 second elastic sleeve assembly, 81 second elastic member, 82 first annular member, 83 second annular member, 831 axial convex ring; 90 annular slider, 91 push rod, 911 roller; 100 sleeve, 101 flange plate, 102 concave portion, 103 convex portion. Detailed implementation mode

[0029] The structures, proportions, sizes, etc. shown in the accompanying drawings of the specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, terms such as "upper", "lower", "front", "back", "middle", etc. cited in this specification are only for the convenience of clear narration and are not used to limit the scope for the implementation of the present invention. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope for the implementation of the present invention.

[0030] Such as Figures 1 to 6 shown, a concrete batching and conveying device includes a driving motor assembly, a auger unit 10, an end cap 20, an end plate 30, a spring 40, and three studs 50.

[0031] The auger unit 10 includes a cylinder body 11 and an auger shaft 12 disposed in the cavity of the cylinder body 11. An inlet and an outlet 111 are provided on the cylinder body 11. The driving motor assembly is matched with the left end of the auger shaft 12 and can drive the auger shaft 12 to rotate in the cylinder body 11, so as to convey materials from one side of the inlet to one side of the outlet 111, thereby achieving the purpose of material conveyance.

[0032] The downstream end / right end of the cylinder body 11 is an open end, and three flange arms 112 are formed on the outer wall of this end side and are distributed at intervals in the circumferential direction. Because the outlet 111 is provided at the downstream end of the cylinder body 11, it is necessary to dispersedly arrange a plurality of flange arms 112 at this end of the cylinder body 11 and at an axial position close to the outlet 111, rather than arranging a ring-shaped radial flange body, so as to avoid the outlet 111. The stud 50 is correspondingly matched with the flange arm 112, which can be a one-to-one corresponding matching situation, or a situation where multiple studs 50 are arranged on one flange arm 112.

[0033] The end cap 20 is disposed at the open end of the cylinder body 11. Specifically, an annular groove 22 capable of being plugged and matched with the right end of the cylinder body 11 is formed on the end face / left end face of the port side of the end cap 20. A shaft hole 25 is formed on the bottom wall of the end cap 20, and after the right end of the auger shaft 12 passes through the shaft hole 25, it can extend out of the cylinder body 11. A profile matching relationship is formed between the auger shaft 12 and the shaft hole 25. Such as Figures 1 to 3In the shown solution, a bushing 60 is sleeved on the auger shaft 12. The left end of the outer peripheral surface of the bushing 60 is correspondingly matched with the shaft hole 25 to establish a form-fit contact matching relationship, enabling the end cap 20 to move axially / left and right relative to the bushing 60. After adding the bushing 60, the sealing performance at the corresponding matching position between the auger shaft 12 and the end cap 20 can be improved, ensuring that the seal at this location remains good and stable after long-term operation. In the above technical solution, the opening end of the cylinder 11 is covered by the end cap 20. At this time, the inner bottom surface of the end cap 20 forms the inner end surface of the right end of the cylinder 11, thus enabling the cylinder 11 to have an inner end surface that can move axially upward and downward.

[0034] After sleeving the bushing 60 on the auger shaft 12, the bushing 60 can be fixed relative to the auger shaft 12. As Figures 1 to 3 shown, the right end of the bushing 60 can be fixed on the left end surface of the end plate 30. After the end plate 30 is fixed relative to the cylinder 11, the bushing 60 cannot move axially / left and right relative to the auger shaft 12, but the auger shaft 12 can still rotate relative to the bushing 60 and the end cap 20 around its axis. After the left end of the bushing 60 is correspondingly matched with the shaft hole 25, the spring 40 can be sleeved outside the bushing 60.

[0035] The matching structure between the end cap 20, the cylinder 11, and the auger shaft 12 enables the end cap 20 to reciprocate axially (along the axis of the cylinder 11) relative to the cylinder 11. Preferably, an axial flange 21 can be formed on the end face of the port side of the end cap 20, and the inner peripheral surface of the axial flange 21 is in contact and matching with the outer peripheral surface of the cylinder 11. The setting of the axial flange 21 can improve the stability of the end cap 20 covering the opening end side of the cylinder 11 and effectively prevent the phenomenon of the end cap 20 slipping off the cylinder 11.

[0036] The inner bottom surface of the end cap 20 forms a concave arc surface 24, and the arc extension direction of the arc surface extends in the radial direction of the end cap 20, that is, in the cross-section of the inner bottom surface, the arc extension direction of the arc surface 24 is along the radial direction of the end cap 20. See Figure 1 、 Figure 2 . On the inner side wall of the end cap 20, a plurality of strip-shaped protrusions 23 are formed, which are distributed at intervals in the circumferential direction and all extend axially. As Figure 5 、 Figure 6As shown, the distributed strip-shaped protrusions 23 are formed in two sections in the axial direction of the end cap 20, that is, the strip-shaped protrusions 23 are distributed on two inner circumferential surfaces. The multiple strip-shaped protrusions 23 on one inner circumferential surface are close to the port of the end cap 20, and the multiple strip-shaped protrusions 23 on the other inner circumferential surface are close to the inner bottom surface of the end cap 20 (i.e., close to the arc surface 24). The number of the strip-shaped protrusions 23 distributed on each inner circumferential surface is preferably controlled within the range of 3 to 8, and more preferably within the range of 4 to 6. At the same time, preferably, the strip-shaped protrusions 23 distributed on the two inner circumferential surfaces are arranged in a staggered state as shown in Figure 6 shown. That is, in the present application, multiple strip-shaped protrusions 23 can be distributed on at least two coaxial inner circumferential surface sections, and each inner circumferential surface section contains at least three strip-shaped protrusions 23. The multiple strip-shaped protrusions 23 respectively arranged in two adjacent inner circumferential surface sections are in a relatively staggered distribution state on the circumferential surface. It is also possible to make the length of the strip-shaped protrusions 23 relatively close to the inner bottom surface side of the end cap 20 greater than the length of the strip-shaped protrusions 23 relatively close to the port side of the end cap 20.

[0037] In Figure 5 , Figure 6 shown, the extension directions of the strip-shaped protrusions 23 in the axial direction are all deflected toward the same side (i.e., all toward the counterclockwise direction side) relative to the axis extension direction of the end cap 20. As reflected in the side view (such as Figure 6 ), it is the state that the strip-shaped protrusions 23 all form an (acute angle) included angle relative to the radial direction of the end cap 20.

[0038] Both the end plate 30 and the spring 40 are sleeved on the shaft section of the auger shaft 12 extending outside the end cap 20. The left end of the spring 40 is in contact and matching with the right end face of the end cap 20, and the right end of the spring 40 is in contact and matching with the left end face of the end plate 30. Specifically, an end face counterbore 26 is formed on the right end face of the end cap 20, so that the left end of the spring 40 extends into the end face counterbore 26 and contacts the inner bottom surface of the end face counterbore 26. The outer diameter of the spring 40 is close to the inner diameter of the end face counterbore 26, which can effectively prevent the left end of the spring 40 from slipping significantly relative to the end of the end cap 20, so that the spring 40 can stably and reliably transmit the elastic force in the axial direction. Correspondingly, an axially extending annular flange body is formed on the left end face of the end plate 30, so that the right end of the spring 40 extends into the annular flange body and contacts the left end face of the end plate 30. The inner diameter of the annular flange body is close to the outer diameter of the spring 40, which can effectively prevent the right end of the spring 40 from slipping significantly relative to the end of the end plate 30.

[0039] A radial flange (i.e., the illustrated annular flange 31) is formed on the end plate 30, and through holes capable of corresponding to and matching the two ends of each stud 50 are respectively formed on the annular flange 31 and the flange arm 112. The extending directions of the axial lines of the through holes are parallel to the extending direction of the axis of the cylinder body 11. External thread segments are formed at both ends of the stud 50. After nuts are arranged on the external thread segments at both ends, the axial distance between the open end of the cylinder body 11 and the end plate 30 can be limited, and the initial compression state of the spring 40 can be set. Refer to Figure 2 the illustrated state.

[0040] When an axial force F (a force with a non-constant magnitude) is applied to the end cap 20 by the material, as the force F increases, it can push the end cap 20 to move rightward relative to the cylinder body 11 or rather relative to the bushing 60, so that the spring 40 is further gradually compressed. Refer to Figure 3 the illustrated state. As the compression degree of the spring 40 continuously increases, when its elastic thrust is sufficient to resist the force F of the material on the end cap 20, it can drive the end cap 20 to move leftward. With the cyclic change of the force F and the elastic thrust of the spring 40, it can cause the end cap 20 to continuously move axially / left and right, and cause the material accumulated near the end cap 20 to move. Under the action of the strip-shaped teeth 23, it is continuously cut and is not easily extruded to form a hard large block. Moreover, if the configured strip-shaped teeth 23 are inclined relative to the axis extending direction, under the action of the strip-shaped teeth 23, the material will not only be divided, but also will not be guided to generate an offset in the circumferential direction, and can have a certain fluidity in the circumferential direction when being pushed and pressed by an external force, and can flow to the discharge port 111 and be slowly discharged.

[0041] A shoulder 113 is formed on the outer peripheral surface of the cylinder body 11. After the end cap 20 is sleeved on the right end of the cylinder body 11, the end surface of the shoulder 113 can contact the left end surface of the end cap 20, and the position where the end cap 20 moves leftward relative to the cylinder body 11 can be limited.

[0042] The right end of the auger shaft 12 extends out of the end cap 20. After being matched with the end plate 30 and the spring 40, it continues to extend rightward for a certain length and finally matches with an end support 121 (which can be designed with reference to the prior art) fixed on the frame, is supported, and can ensure that the auger shaft 12 stably rotates around its axis.

[0043] As Figures 1 to 3 and Figure 9As shown, external thread section one 51 and external thread section two 52 are respectively formed at both ends of the stud 50, and the external thread section one 51 is relatively located on the right end side of the stud 50. A shoulder is formed between the external thread section one 51 and the body of the stud 50. When the external thread section one 51 passes through the through hole provided on the annular flange 31, the end face of the shoulder can contact the end face of the annular flange 31, thereby preventing the annular flange 31 from moving leftward relative to the stud 50. Furthermore, after a nut is arranged on the external thread section one 51, the annular flange 31 can be fixedly clamped, so that the annular flange 31 (i.e., the end plate 30) and the stud 50 are kept in a relatively fixed matching state. The external thread section two 52 passes through the through hole provided on the flange arm 112, and at least a pair of nuts are arranged on the external thread section two 52, and the plurality of nuts are relatively distributed on the left and right sides of the flange arm 112. When the nuts on both sides are screwed, the flange arm 112 can be clamped in the middle, so that the cylinder body 11 and the stud 50 are kept in a relatively fixed matching state.

[0044] As Figures 7 to 8 As shown, a first elastic sleeve assembly 70 is arranged between the inner peripheral surface of the right end of the cylinder body 11 and the end face of the end cap 20 extending into the cylinder body 11. The first elastic sleeve assembly 70 includes a cylindrical elastic member one 71 and a first end ring 72 and a second end ring 73 respectively fixed at the left and right ends of the elastic member one 71. The outer peripheral surface of the first end ring 72 contacts the inner peripheral surface of the cylinder body 11 and is fixed in the cylinder body 11 with bolts. The second end ring 73 is inserted into the port of the end cap 20 and is fixedly connected with the end cap 20 (through a threaded structure), so that the elastic member one 71 can cover a section of the inner peripheral surface (on the cylinder body 11) relatively near the inner side of the opening end of the cylinder body 11, thereby isolating the material and preventing the material from contacting the inner peripheral surface of this part of the cylinder body 11 during the process of the end cap 20 moving axially relative to the cylinder body 11 and invading into the relative peripheral surface between the end cap 20 and the cylinder body 11, which will adversely affect the sealing performance and relative movement performance of the contact peripheral surface between the end cap 20 and the cylinder body 11, helping to improve the stability and reliability when the end cap 20 moves left and right relative to the cylinder body 11, and effectively avoiding the occurrence of jamming and jamming situations. When the end cap 20 moves axially relative to the cylinder body 11, the elastic member one 71 can generate elastic deformation in the axial direction, and the extension amount of the elastic member one 71 in the axial direction can meet the requirement of the moving stroke amount of the end cap 20 relative to the cylinder body 11.

[0045] As Figures 7 to 8As shown, a second elastic sleeve assembly 80 is disposed between the inner port of the shaft hole 25 on the end cap 20 and the end face of the shaft sleeve 60 extending into the end cap 20. The second elastic sleeve assembly 80 includes a second elastic member 81 in a tubular shape and an annular member 82 and an annular member 83 respectively fixed to the left and right ends of the second elastic member 81. The annular member 82 is fixedly matched with the end cap 20, and the annular member 83 is fixedly matched with the (left) end face of the shaft sleeve 60, so that the second elastic member 81 can enclose the outer peripheral surface portion of the shaft sleeve 60 located between the inner port of the shaft hole 25 and the left end face of the shaft sleeve 60 inside it, and isolate and protect the portion of the shaft sleeve 60 extending into the end cap 20, preventing a large amount of material from invading between the opposite peripheral surfaces of the shaft hole 25 and the shaft sleeve 60 during the axial movement of the end cap 20 relative to the shaft sleeve 60, which will adversely affect the sealing performance and relative movement performance between the end cap 20 and the shaft sleeve 60, and contribute to improving the stability and reliability of the end cap 20 when moving relative to the cylinder body 11 in the left and right directions, effectively avoiding jamming and sticking situations. Specifically, on the inner bottom surface of the end cap 20, an axial flange two 251 is formed at the inner port of the shaft hole 25. The arc surface 24 extends to the root of the axial flange two 251. The annular member 82 and the axial flange two 251 are matched through a threaded structure, so that the right end of the second elastic sleeve assembly 80 is fixed on the end cap 20. An axial convex ring 831 is formed on the outer edge of the inner circle of the annular member 83, so that the axial convex ring 831 contacts the (left) end face of the shaft sleeve 60 and is fixed together by bolts / screws, so that the annular member 83 is fixedly matched with the end face of the shaft sleeve 60. During the axial movement of the end cap 20 relative to the cylinder body 11, the second elastic member 81 can produce elastic deformation (in the axial direction), and the extension amount of the second elastic member 81 in the axial direction can meet the requirement of the movement stroke amount of the end cap 20 relative to the cylinder body 11.

[0046] As Figures 9 to 10 shown, the technical solution of the present invention further includes an annular slider 90 and a sleeve 100. Correspondingly, an annular sunk groove 32 is formed on the side end face of the end plate 30 facing the end cap 20 (i.e., on the left end face of the end plate 30). Four axial through holes are formed on the inner bottom surface of the annular sunk groove 32 and are distributed at intervals in the circumferential direction.

[0047] A radially convex ring is formed on the inner wall of the annular slider 90, near its left end. The end of the spring 40 facing the end plate 30 contacts and mates with the left end face of the radially convex ring. Four push rods 91 are formed on the right end of the annular slider 90, corresponding one-to-one with the axial through holes. The right end of the annular slider 90 is inserted into the annular recess 32, with the free end of each push rod 91 extending rightward and outside the end plate 30. This allows the annular slider 90 to reciprocate in the axial / lateral direction relative to the end plate 30.

[0048] The sleeve 100 is fixed on the auger shaft 12 and is located relatively to the end side of the end plate 30 away from the end cap 20, that is, the sleeve 100 is located relatively to the right side of the end plate 30. A cam structure is formed on the end surface of the sleeve 100 facing the end plate 30. The roller 911 provided at the free end of the push rod 91 is in contact and matched with the cam structure, and in the process of the sleeve 100 and the auger shaft 12 rotating synchronously, the cam structure can drive the annular slider 90 to move relative to the end plate 30 toward the direction close to the end cap 20 (towards the left side) through the push rod 91, and can move the annular slider 90 to the right relative to the end plate 30 under the elastic thrust of the spring 40, and then under the combined action of the cam structure and the spring 40, the annular slider 90 can be driven axially (that is, Figure 10 The cam structure reciprocates in the X direction (in the X direction). Specifically, the cam structure includes four recesses 102 and four protrusions 103 distributed on the same circumference. That is, the push rod 91, the recesses 102, and the protrusions 103 must be the same in number. The recesses 102 and the protrusions 103 are both arc-shaped, so that the (circumferential) extension length of the recess 102 is not less than the (circumferential) extension length of the protrusion 103. A curved boss is formed between adjacent recesses 102 and protrusions 103 to connect them, so that the end of the push rod 91 can move between the recesses 102 and protrusions 103 (around the circumference).

[0049] A flange 101 is formed on the sleeve 100, and the recesses 102 and the protrusions 103 are distributed on the left end surface of the flange 101. The recesses 102 and the protrusions 103 are alternately distributed, and each push rod 91 can simultaneously match with each recess 102 and each protrusion 103, so that the push rods 91 can act on the protrusions 103 at the same time, and the push rods 91 can move synchronously in the same direction to push the annular slider 90 to the left. In addition, under the elastic thrust of the spring 40, the rollers 911 on each push rod 91 can be synchronously pressed against the inner bottom surface of the recess 102, so that the push rods 91 can be synchronously moved in the same and opposite directions to reset.

[0050] After setting the annular slider 90 and the sleeve 100, it can increase the initiative of the end cap 20 to move leftward relative to the cylinder body 11, can improve the amplitude of the end cap 20 axially moving relative to the cylinder body 11, and can more stably prompt the end cap 20 to achieve a large-scale reset, so that the material accumulated near the end cap 20 can suddenly obtain a large-scale filling space cyclically, which helps to improve the fluidity of the material near the end cap 20, can inhibit the occurrence of caking easily caused by the material being relatively stationary at a basically fixed position for a long time and being extruded for a long time, and makes the material less likely to be compacted into a large block.

[0051] In summary, in the technical solution of the present invention, making the inner end face (i.e., the inner bottom surface of the end cap 20) disposed at the end of the cylinder body 11 and close to the discharge port 111 have an elastic floating stroke interval in the axial direction and form the arc surface 24 can disperse the axial force of the material acting on the inner end face, prompt the inner end face to axially move, and make the axial force (magnitude and direction) received by the material change irregularly and continuously, having a vibration characteristic, and making the material continuously divided by the strip-shaped protrusions 23, having a certain ability of dispersed flow, and can prevent the occurrence of the situation that the material is easily continuously compacted due to being almost in a stagnant state. Therefore, the present invention improves the extrusion condition of the material at the end of the cylinder body 11. Under the influence of the elastic force, the material is gradually divided and gradually flows outward, is not easily compacted into a whole, can inhibit the premature occurrence of excessive caking phenomenon, significantly extends the cleaning cycle, and helps to reduce the operation and maintenance costs. Therefore, the present invention effectively overcomes some practical problems in the prior art and thus has high utilization value and practical significance.

[0052] The above embodiments are only illustrative of the principles and effects of the present invention, rather than limiting the present invention. There are many aspects of the present invention that can be improved without departing from the overall idea. For those who are familiar with this technology, they can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A concrete batching and conveying device, comprising a auger unit (10) including a cylinder (11) and an auger shaft (12); characterized in that: It also includes an end cap (20), an end plate (30), a spring (40) and a plurality of studs (50); the downstream end of the cylinder body (11) is an open end, and a plurality of flange arms (112) are formed on the outer wall of this end and are distributed at intervals in the circumferential direction; The end cap (20) corresponds to and matches the open end of the cylinder body (11), and an annular groove (22) capable of being inserted and matched with the cylinder body (11) is formed on the end face; a shaft hole (25) corresponding to and matching the auger shaft (12) is formed on the bottom wall of the end cap (20); the end cap (20) can move axially relative to the cylinder body (11); the inner bottom surface of the end cap (20) is formed as a concave arc surface (24), and a plurality of strip-shaped protrusions (23) extending in the axial direction are distributed on the side wall near the inner bottom surface; Both the end plate (30) and the spring (40) are sleeved on the shaft section of the auger shaft (12) extending out of the end cap (20), and the two ends of the spring (40) are respectively in contact and match with the end face of the end plate (30) and the end face of the end cap (20); a radial flange is formed on the end plate (30), and through holes capable of respectively corresponding to and matching the two ends of each stud (50) are formed on the radial flange and each flange arm (112); External thread sections are formed at both ends of the stud (50). After nuts are arranged on the external thread sections at both ends, the axial distance between the cylinder body (11) and the end plate (30) can be limited; The extending directions of the strip-shaped protrusions (23) in the axial direction are all deflected towards the same side relative to the axis extending direction; A shaft sleeve (60) is sleeved on the auger shaft (12) and the shaft sleeve (60) can be relatively fixed axially relative to the auger shaft (12); one end of the shaft sleeve (60) corresponds to and matches the shaft hole (25), and the end cap (20) can move axially relative to the shaft sleeve (60).

2. A concrete batching and conveying device according to claim 1, characterized in that: The plurality of strip-shaped protrusions (23) are at least distributed on two coaxial inner circumferential surface sections, and each inner circumferential surface section contains at least three strip-shaped protrusions (23); the length of the strip-shaped protrusions (23) distributed on the side relatively close to the inner bottom surface of the end cap (20) is greater than the length of the strip-shaped protrusions (23) distributed on the side relatively close to the port of the end cap (20).

3. A concrete batching and conveying device according to claim 2, characterized in that: The plurality of strip-shaped protrusions (23) respectively arranged in two adjacent inner circumferential surface sections are staggered in the circumferential surface distribution positions.

4. A concrete batching and conveying device according to claim 1, characterized in that: A second elastic sleeve assembly (80) is arranged between the inner port of the shaft hole (25) on the end cap (20) and the end face of the shaft sleeve (60) extending into the end cap (20); the second elastic sleeve assembly (80) includes a cylindrical elastic member and annular members respectively fixed at both ends of the elastic member. One of the annular members is fixedly matched with the end cap (20), and the other annular member is fixedly matched with the end face of the shaft sleeve (60), so that the elastic member can enclose the outer circumferential surface of the shaft sleeve (60) located between the inner port of the shaft hole (25) and the end face of the shaft sleeve (60) inside it; when the end cap (20) moves axially relative to the cylinder body (11), the elastic member can generate elastic deformation.

5. The concrete batching and conveying device according to claim 4, characterized in that: On the inner bottom surface of the end cap (20), an axial flange two (251) is formed at the inner port of the shaft hole (25); the annular part connecting the end cap (20) and the axial flange two (251) is matched through a threaded structure; an axial convex ring (831) is formed on the end face of the annular part of the connecting bushing (60), so that the axial convex ring (831) contacts the end face of the bushing (60) and is fixed together by bolts or screws.

6. A concrete batching and conveying device according to claim 1, characterized in that: A first elastic sleeve assembly (70) is arranged between the inner peripheral surface of the cylinder body (11) and the end face of the end cap (20) extending into the cylinder body (11); the first elastic sleeve assembly (70) includes a cylindrical elastic member and end rings respectively fixed at both ends of the elastic member, the outer peripheral surface of one end ring contacts the inner peripheral surface of the cylinder body (11) and is fixed in the cylinder body (11), and the other end ring is inserted into the port of the end cap (20) and fixedly connected with the end cap (20), so that the elastic member can cover a section of the inner peripheral surface relatively located inside the opening end of the cylinder body (11); when the end cap (20) moves axially relative to the cylinder body (11), the elastic member can generate elastic deformation.

7. A concrete batching and conveying device according to claim 1, characterized in that: It further includes an annular slider (90) and a sleeve (100); an annular sunk groove (32) is formed on the end face of the end plate (30) facing the end cap (20), and a plurality of axial through holes are distributed on the inner bottom surface of the annular sunk groove (32); A radial convex ring is formed on the inner wall of the annular slider (90); the spring (40) contacts and matches with the end face of the radial convex ring; One end of the annular slider (90) is formed with a plurality of push rods (91) corresponding and matching with the axial through holes one by one, and this end is inserted into the annular sunk groove (32), and the free ends of the push rods (91) all extend out of the end plate (30); The sleeve (100) is fixed on the auger shaft (12), and a cam structure is formed on the end face of the sleeve (100) facing the end plate (30); the free ends of the push rods (91) match with the cam structure, so that the cam structure can drive the annular slider (90) to move relative to the end plate (30) in the direction close to the end cap (20) through the push rods (91).

8. A concrete batching and conveying device according to claim 7, characterized in that: The cam structure includes a plurality of concave parts (102) and a plurality of convex parts (103) distributed on the same circumference; the number of the push rods (91), the concave parts (102) and the convex parts (103) is the same; the concave parts (102) and the convex parts (103) are alternately distributed, so that each push rod (91) can simultaneously correspond and match with each concave part (102) and simultaneously correspond and match with each convex part (103).

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