WO2013083028A1

WO2013083028A1 - Elastic damper, material distribution arm rest and concrete distribution equipment

Info

Publication number: WO2013083028A1
Application number: PCT/CN2012/085845
Authority: WO
Inventors: 黄柯; 许平增
Original assignee: 中联重科股份有限公司
Priority date: 2011-12-07
Filing date: 2012-12-04
Publication date: 2013-06-13
Also published as: CN102494221A; CN102494221B

Abstract

Disclosed in the present invention is an elastic damper, a material distribution arm rest and concrete distribution equipment. The elastic damper comprises an elastic baffle sheet (12) and a periphery connecting part (11), wherein the periphery connecting part (11) is arranged along the periphery of the elastic baffle sheet (12); and the elastic baffle sheet (12) comprises an expandable and a contractive elastic opening (13). According to the elastic damper of the invention, the phenomenon of segregation caused by overhigh speed of movement of concrete can be prevented, high-speed impact and abrasion on delivering bent pipes caused by overhigh speed of the concrete are prevented, and the service life of the delivering bent pipes is prolonged.

Description

Elastic damper, cloth boom and concrete cloth equipment

The present invention relates to coagulation: :1::.The field of cloth machinery", specifically, an inert damper, a cloth boom and a concrete cloth device. The key component of a concrete pump truck and a cloth machine is to transport concrete to Cloth boom at the cloth position. The cloth arm frame is composed of two sections that are hinged to each other, and the arm sections are driven by the link cylinder mechanism between the two sections. When fabricating, the boom is arranged in various postures to adapt to the fabric of the construction site. The common cloth posture is that the boom rises, crosses the building, the end truss sinks, and the end hose is placed at the fabric point to carry the fabric. The concrete is conveyed to the conveying pipe which is placed on the boom device, and is continuously conveyed to the end hose outlet under the continuous pushing of the slurry feeding device, as shown in Fig. i, the boom device includes a conveying pipe 10', and is disposed at the conveying The conveying elbow 20' at the end of the tube 10' and the sealing connection 30' connecting the conveying pipe 1 CT and the conveying elbow 20'_; In a common cloth attitude, the concrete is conveyed in the conveying pipe i0' on the boom device When passing the highest point of the boom, the delivery tube on the S straight or inclined end boom! 0' in the 'b' slip or ί from the falling body movement in the rapid fall process, the concrete will produce two kinds of window effects of 'F: ι, concrete segregation, affecting the performance of the concrete i;

2. After the aggregate of the coagulation ± is separated, the commercial speed of the Φ friction end concrete conveying elbow 2CT inner wall, causing the bending tube to wear and wear rapidly, greatly reducing the service life and losing the function of use, this problem causes the loading And the concrete conveying elbow with the nominal service life of the distributor is about several thousand squares in this position. Weng: Even when the poor concrete material is sent, the life is less than one thousand.

The invention aims to provide an elastic damper, a cloth arm frame and a concrete cloth distributing device, which can prevent the segregation phenomenon caused by the excessive movement speed of the S concrete, avoiding the coagulation of the rabbit, and the speed of the soil is too fast to cause the conveying elbow Bird speed shock and wear, to improve the life of the transport elbow. In order to achieve the above, according to an aspect of the invention, there is provided an elastic damper comprising an elastic baffle and a peripheral connecting portion disposed along a periphery of the elastic baffle, the elastic baffle comprising an expandable and contractible elastic幵口" Into:

3⁄4 ·■一歩i 歩地

One or more long slots of Yanzhong enter the ground, and the elastic 幵P is set at the center of the elastic cover^

3⁄4 ·■一歩歩i, round] ^: | ^{: The} port is elastic, and the axial direction of the piece extends to the side of the elastic damper.

The inner side of the positioning flange is provided with 'inward ·····-歩, the positioning flange of the peripheral connecting portion includes

The peripheral wall of the outer periphery of the sac, and the connection to the ridge

The mouth portion of the elastic sealing groove is formed between the sheets, and the vertical wall of the flange is positioned. The inclined tapered surface structure, and the inner circumference of the positioning flange is farther from the elastic baffle than the distance of the outer peripheral edge from the elastic baffle Made of a wear-resistant and corrosion-resistant material. According to the present invention, a cloth riding frame is provided, which comprises a conveying straight pipe, a conveying elbow provided at the end of the conveying straight pipe, and a connecting conveying straight pipe and The pipe clamp for conveying the elbow further includes the above-mentioned elastic damper, the peripheral connecting portion of the elastic damper is disposed at a connection gap position between the conveying straight pipe and the conveying elbow, and the elastic baffle of the elastic damper is disposed at the conveying straight pipe and conveying On the transfer line between the elbows. According to still another aspect of the present invention, a concrete distributing apparatus is provided, including a cloth boom or a spring, the elastic damper being the elastic damper described above, the cloth boom being the above-described cloth boom, according to the present invention In an embodiment, the elastic damper includes a positioning stop and an elastic blocking piece disposed in the 3⁄4 position of the opening, the elastic blocking piece including an elastic mouthpiece that is expandable and contractible. The elastic boring makes the elastic damper form an expandable and contracting diameter structure; : By the elastic resistance, the object dynamics of the yoke cannot overcome the elastic force of the elastic slat, and the elastic slab reduces the conveying speed of the object. The object is decelerated at the elastic flap, thereby reducing the impact of the object. After the dynamic force of the object exceeds the elastic resistance of the elastic flap, the opening of the elastic flap expands to the outside, the diameter is opened, and the object is smooth from the elastic opening P. by. The elastic damper can be used to reduce the speed of the concrete sandstone after being applied to the concrete conveying pipe, so as to ensure that the rebel feeds together after the sand reaches 3⁄4, and prevents the segregation of the concrete. At the same time, it can effectively prevent the sand speed from being too fast, causing high Φ and wear on the conveying elbow, and prolonging the service life of the conveying elbow. The accompanying drawings are intended to provide a further understanding of the present invention, and are intended to be illustrative of the invention, and are not intended to be construed as阙中: III! The partial structure of the prior art cloth boom is shown; !112 shows the half-floor structure of the elastic damper according to the first embodiment of the present invention. FIG. 3 shows the invention. The front view of the elastic damper of the first embodiment W is schematically shown; the circle 4 shows the schematic structure of the cross-sectional structure according to AA of FIG. 3; FIG. 5 shows the elasticity according to the second embodiment of the present invention Schematic diagram of the front view of the damper; the garden 6 shows a schematic circle of the fabric arm according to an embodiment of the invention in a thousand obstructed state at the elastic damper; and the cabinet 7 shows the implementation according to the invention The structure of the fabric boom in the case where the elastic damper is in a clear state, the detailed description of the invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application can be combined with each other in the direction of the arrow to indicate the direction of concrete conveyance. As shown in FIG. 2, FIG. 3 and FIG. 4, according to the first embodiment of the present invention, the elastic damper 10 includes a peripheral connecting portion II and an elastic dam 12, and the peripheral connecting portion 1 is disposed along the circumference of the elastic dam]. _{(1) The} elastic flap 12 includes an elastic opening 13 that expands and contracts, and the peripheral connecting portion 1 includes a positioning flange that extends toward one side or both sides of the elastic flap 2 in the axial direction of the elastic flap 1-2. 14. In the present embodiment, the positioning flange 14 extends along both sides of the circumferential 'edge' of the elastic flap 12 to form a good positioning structure. The inner side of the positioning flange 14 is provided with an elastic sealing groove 15, and an elastic sealing groove. 15 extending along the circumference of the elastic flap 12, the edge sealing structure of the positioning flange 14 can be scaled, thereby externally engaging Forming a good sealing function, the positioning flange 14 of the peripheral connecting portion U includes a vertical wall 14 opposite to the elastic flap 12 and is connected to the outer edge of the vertical sill 41 and the elastic ridge 2, and An inner peripheral wall 143 which is connected to the inner periphery of the vertical 141 and extends toward the elastic flap 1.2, and an opening portion of the elastic seal groove 15 are formed between the inner peripheral wall 143 and the elastic stopper 12. The vertical wall 141 of the positioning flange M has a tapered structure, and the inner circumference of the flange 14 is spaced from the elastic blade 12 by a distance greater than the distance of the outer periphery from the elastic blade 12. The sealing edge of the positioning flange i4 has a frequency oblique angle, so that the sealing structure of the peripheral rim portion 1 is more convenient to form a good seal. The simple edge connecting portion n may also be provided with no sealing structure, only has a positioning function, and the sealing is formed by other matching structures. The elastic baffle i2 is made of a wear-resistant and corrosion-resistant elastic material and is fixedly disposed on the inner wall of the peripheral connecting portion u.

.]:;; The elastic wear-resistant corrosion-resistant material is, for example, rubber. The elastic opening 13 is an elastic opening provided at an intermediate position of the elastic flap 12, and the elastic opening may be a lip-shaped opening. The sturdy baffle 12 of such a structure includes a first lip portion and a second lip portion, and a lip-shaped mouthpiece disposed between the first lip portion and the second lip portion, wherein the edge of the lip-shaped mouth is elastic along the armor The axial direction of the device 10 is convex toward the side of the elastic damper 10 when the elastic resistor 10 is mounted, and the lip shape

The convex direction of F□ is the flow direction of the object (such as concrete), and the reverse direction of the lip opening is reduced, ensuring that the lip-shaped mouth is fully stressed after being subjected to sufficient pressure. 3⁄4 on the one hand, it is also possible to reduce the amount of elastic deformation of the elastic flap 2, and to extend the life of the elastic damper 10 in other embodiments, the lip shape can also be set in the first lip and the first A long slot opening or other shape between the two lips, in an embodiment not shown, the elastic mouth 13 may also be a 3⁄4 slotted mouth extending in the radial direction of the elastic stop j† 12 The length of the long-shaped jaws 3⁄4 is three, extending from the center of the elastic cymbal 12, so that the long-slot-shaped jaws communicate with each other and form an expandable and contractible jaw structure. Referring to FIG. 5 in combination, according to the second embodiment of the present invention, the elastic damper 10 has the peripheral connection portion with the first embodiment! 1 peripheral joint portion 1 1 of the same structure, the difference is that the elastic damper 10 Iti is provided with a resilient opening 13 at a central position of the elastic flap 12 which is circularly open, preferably circular The opening is concentrically arranged with the elastic damper 12, and the circular opening extends along one side of the elastic damper 12 toward one side of the elastic damper i0, so that the elastic visor 2 forms a small mouth shape with a large entrance and an exit. At the time of installation, the concrete flows in from the large opening of the mouth of the mouth, and the small mouth flows out. Referring to FIG. 6 and FIG. 7, according to an embodiment of the present invention, the cloth boom comprises a conveying straight pipe 20 and a conveying provided at the end of the conveying straight pipe 20. The elbow 30, and the pipe card 40 connecting the conveying straight pipe 20 and the conveying elbow 30, further includes the above-mentioned elastic damper 10, and the peripheral connecting portion 1 of the elastic damper H) is disposed at the conveying straight pipe 20 and the conveying elbow The connection gap position of 30 is such that the elastic flaps 2 of the elastic damper 10 are located on the conveying line between the conveying straight pipe 20 and the conveying elbow 30. Please refer to Figure 6, as shown in Figure 6, elastic damper! The elastic mouth of 0 is in a contracted state. When the concrete reaches the position of the elastic resistance jig 10, the concrete pressure cannot overcome the resistance of the elastic baffle 12 of the elastic animer 10, and the elastic baffle 12 blocks the concrete, causing the concrete to slow down at the position of the elastic 幵C] 13 . Please refer to the cabinet 7 as shown in Figure 7. When the concrete f force reaches a certain level, overcome the elastic resistance. The resistance of the elastic flap of 12, the elastic flap 13 of the elastic flap 12 is opened, and expands in the flow direction of the concrete, so that the capsule soil smoothly passes through the elastic damper 10 continuously, and the elastic damper iO does not form a strong obstacle to the concrete ^ According to an embodiment of the invention, the concrete cloth is not provided with the elastic damper 0 and/or the cloth boom described above. When the end boom is in a horizontal cloth position, the concrete is powered by the pumping equipment and continuously flows in the concrete duct under the push of the feed. When the concrete reaches the elastic damper 10, the concrete conveying speed is lowered due to the blocking by the elastic baffle i2 of the elastic damper 10, and an obstruction is formed at the elastic opening 13 of the elastic damper 10. When the pressure sent by im exceeds the obstructive force of the elastic flap 12 of the elastic damper, the elastic jaw B of the elastic damper 10 is deformed, the mouth is expanded outward, and the concrete passes. When the end boom is in a vertical or inclined cloth attitude, the concrete slides down to the elastic damper io by gravity, and the elastic baffle 12 of the elastic damper 0 causes the concrete to slowly decelerate and accumulate concrete, and the concrete accumulates to a certain extent. The amount of the spirit is sufficient to deform and expand the elastic flap 12 of the elastic damper 10, the elastic mouth B is hit, and the concrete continuously passes. Thus, by the hindrance deceleration effect of the inertial damper 10, the degree of coagulation_earth erosion wear end bend 30 is reduced, and the problem of ig concrete segregation is solved. As can be seen from the above description, the elastic damper includes a peripheral connecting portion and an elastic blocking piece disposed in the peripheral connecting portion, and the elastic blocking piece includes an elastic opening which is expandable and contractible. The elastic sipe makes the elastic resistance jg form a diameter-reducing structure that can be expanded and contracted. 1 When the elastic force of the object cannot overcome the elastic turbulence of the elastic slab, the elastic slab reduces the conveying speed of the object. The object decelerates at the elastic 3⁄4†, thereby reducing the smashing of the object. When the dynamic force of the object exceeds the elastic resistance of the elastic flap, the opening of the elastic flap expands to the outside, and the object passes smoothly through the elastic opening. . The elastic damper can reduce the speed of the concrete sandstone after the sub-concrete conveying pipe is used, so as to ensure that the E loading reaches the sand and then the same, to prevent the segregation of the concrete, and also effectively avoid the sand speed. Too high impact and wear on the conveying elbow, and prolong the service life of the conveying elbow. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and modifications, equivalents, modifications, etc., to those skilled in the art are included in the scope of the present invention.

Claims

An elastic damper, characterized in that the elastic damper (10) comprises an elastic baffle U2) and a peripheral connecting portion (1U, the elastic baffle disposed along the periphery of the elastic baffle - (12) (12) including

The elastic damper according to claim ¹ , wherein ^: the elastic opening (13) is a lip-shaped opening provided at an intermediate position of the elastic stop (12) according to the elasticity described in claim 2 The sunburst is characterized in that the edge of the lip-shaped mouth is convex toward the side of the elastic damping « (10) in the axial direction of the elastic flap (12).

4. The elastic damper according to claim 1 , wherein the elastic opening (13) is one or along from the center of the elastic S piece (12) along the elastic blocking piece (12) Multiple long trough mouths.

5, its characteristics are ^{: the} elastic mouth (13) is set

i 12) Circular opening in the center position. The elastic damper according to claim 5, characterized in that the circular mortise is directed to the elastic element (10) in the axial direction of the elastic stop (12). · Side extension.

The inside of the Chu flange (14) is provided with an elastic sealing groove extending along the circumference of the / (12) (15)

The elastic damper according to claim 7, wherein the positioning flange (14) of the peripheral connecting portion (11) comprises an opposite vertical wall (M1) of the elastic blocking piece (i2), Connected to the vertical wall

(141) and an outer peripheral wall (142) of the periphery of the elastic flap (12), and an inner peripheral wall extending to the inner periphery of the upright wall (i4I) and extending toward the elastic flap (12) 143), the inner peripheral wall (143) ^? An opening portion of the elastic sealing groove (15) is formed between the elastic S sheets (12).

9. The elastic damper according to claim 8, characterized in that the rim of the locating edge (14) is inclined and the inner circumference of the locating flange (14) is The distance of the elastic flap (12) is greater than the distance of the outer peripheral green from the elastic flap (12) !0. According to the claims! The elastic damper according to any one of the preceding claims, wherein the elastic baffle is made of an elastic wear-resistant and corrosion-resistant material.

1 1. A cloth boom comprising a conveying straight pipe (20), a conveying elbow (30) disposed at an end of the conveying straight pipe (20), and connecting the conveying straight pipe (20) and the conveying bend The pipe clamp (40) of the pipe (30), characterized by the elastic damper (10) according to any one of claims 1 to 10, the peripheral connection portion Ui of the elastic damper (10) Provided at a connection gap position of the conveying straight pipe (20.) and the conveying elbow (30), the elastic baffle U2 of the elastic damper (10) is disposed at the conveying straight pipe (20) And on the conveying line between the conveying elbow GO).

12. A concrete spreading device comprising a cloth boom or an elastic damper, characterized in that the elastic damper (10) is an elastic damping according to any one of claims 1 to 10. The cloth boom is the cloth body frame according to claim 11.