Sword type crank arm structure, arm support and trolley
By adopting a sharp sword-type curved arm structure in tunnel mechanical equipment and using symmetrical side plates and bending plate designs, the problem of excessive height of the equipment is solved, and the effect of reducing the gap and increasing strength is achieved.
Patent Information
- Application Number
- CN202420256098.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-01
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-02-01
AI Technical Summary
In existing tunnel machinery equipment, the hinge plate of the folding arm frame and the side plate of the curved arm lead to a large gap between the main arm and the curved arm, which increases the height of the equipment, which in turn causes difficulties at the transportation and construction site. .
Adopting a sword-type curved arm structure, through the symmetrical design of the rib plate and the symmetric side plate, the first and second hinge structures are set, and the protrusions and hinge holes on the side plate are used to hinge the main arm and the bent arm to reduce the hinge The spacing of holes, combined with the bending plate structure and support seat design, optimizes the overall structure of the curved arm.
It effectively reduces the vehicle-retraction gap between the curved arm and the main arm, reduces the height of the entire machine of the arm frame and the trolley, improves the overall strength of the curved arm structure, and avoids interference in the oil cylinder during the working process.
Smart Images
Figure CN222333828U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnel machinery, in particular to a sword-like curved arm structure, an arm frame and a trolley. Background Art
[0002] In the existing tunnel machinery industry equipment, the foldable boom part is mostly connected to the boom pitch cylinder and the crank arm pitch cylinder by riveting an articulated plate on the side plate of the crank arm. However, when the articulated plate is riveted to the side plate of the crank arm, the lower half of the articulated plate needs to be used as the riveting area, so that the distance between the articulated hole on the articulated plate and the crank arm is far, and then when the boom is in the retracted state, there will be a large gap between the boom and the crank arm, resulting in an increase in the height of the entire equipment. During the transportation of the equipment or when entering the tunnel construction site, the height of the entire machine is often too high, which often leads to transportation difficulties or construction difficulties. Utility Model Content
[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a sword-like crank arm structure, an arm frame and a trolley, which can effectively reduce the retracted gap between the crank arm and the boom, thereby achieving the purpose of lowering the height of the entire arm frame and the trolley.
[0004] To achieve the above-mentioned purpose, the utility model provides a sword-like curved arm structure, comprising a rib plate and two symmetrical side plates, wherein the rib plate is fixedly connected between the two side plates;
[0005] The first end of the side plate is provided with a first hinge structure for hingedly connecting the upper arm;
[0006] The second end of the side plate is provided with a second hinge structure for hingedly connecting the turntable;
[0007] A first protrusion extending upward is provided on the side plate near the first end, and a first hinge hole is provided on the first protrusion for hingedly connecting the boom pitch cylinder.
[0008] In one embodiment, the side plate has a second protrusion extending downwardly at a position close to the first end, and the second protrusion is provided with a second hinge hole for hingedly connecting the crank arm pitch cylinder.
[0009] In one embodiment, the first protrusion and the second protrusion are integrally formed with the side plate.
[0010] In one embodiment, the side plate includes a first plate body, a second plate body and a third plate body connected in sequence;
[0011] The first hinge structure and the first protrusion are both located on the first plate body, and the second hinge structure is located on the third plate body;
[0012] The first plate body and the third plate body are both thicker than the second plate body.
[0013] In one embodiment, the rib plate is a bent plate structure, so as to cooperate with the two side plates to form a curved arm of the box structure.
[0014] In one embodiment, the top of the rib plate includes a first bent plate body, a second bent plate body and the third bent plate body which are connected in sequence;
[0015] Part or all of the second bent plate is connected to the first plate, and the second bent plate is thicker than the first bent plate and the third bent plate.
[0016] In one embodiment, the sword-type curved arm structure also includes a first support seat, which is located near the second end of the side plate, and the first support seat is fixedly connected to the side plate and the rib plate to support the upper arm pitch cylinder.
[0017] In one embodiment, the sword-like curved arm structure also includes a second support seat, which is located near the first end of the side plate, and the second support seat is fixedly connected to the side plate and the rib plate to support the curved arm.
[0018] To achieve the above object, the utility model also provides a boom, including a slewing platform, a boom, a boom pitch cylinder, a crank arm pitch cylinder and the above sword-like crank arm structure;
[0019] The turntable, the sword-like crank arm structure and the boom are hinged in sequence, the boom pitch cylinder is hinged between the boom and the sword-like crank arm structure, and the crank arm pitch cylinder is hinged between the turntable and the sword-like crank arm structure.
[0020] In order to achieve the above object, the utility model also provides a trolley, on which the above arm is provided.
[0021] Compared with the prior art, the utility model has the following beneficial technical effects:
[0022] 1. The sword-shaped crank arm structure of the utility model can effectively reduce the gap between the crank arm and the boom by integrating the hinge point of the boom pitch cylinder with the side plate of the crank arm, thereby achieving the purpose of reducing the height of the boom and the trolley;
[0023] 2. The sword-shaped crank arm structure in the utility model adopts a thick plate-thin plate-thick plate structural design for the side plate in the preferred solution, which can effectively improve the overall strength of the crank arm structure;
[0024] 3. The sword-shaped crank arm structure in the utility model adopts a rib plate of a bent plate structure in the preferred solution, and cooperates with two side plates to form a crank arm of a box structure. At the same time, the rib plate adopts a thin plate-thick plate-thin plate structure design, thereby further improving the overall strength of the crank arm structure and optimizing the product weight;
[0025] 4. The sword-like crank arm structure of the utility model adopts a rib plate of a bent plate structure in the preferred embodiment, and also avoids the interference problem between the boom pitch cylinder and the crank arm pitch cylinder during operation when the crank arm lowers the hinge hole position. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0027] Figure 1 It is an axonometric view of the sword-like curved arm structure in Example 1 of the utility model;
[0028] Figure 2 It is a top view of the sword-like curved arm structure in Example 1 of the utility model;
[0029] Figure 3 It is a cross-sectional view of the sword-like curved arm structure in Embodiment 1 of the present utility model;
[0030] Figure 4 It is a partial cross-sectional view of the first plate body and the second plate body on the side plate in Example 1 of the utility model;
[0031] Figure 5 It is a front view of the arm support in Embodiment 2 of the present utility model;
[0032] Figure 6 This is an axonometric view of the arm in Example 2 of the utility model.
[0033] Figure numbers: side panel 1, first protrusion 101, first hinge hole 102, second protrusion 103, second hinge hole 104, first plate body 105, second plate body 106, third plate body 107, rib plate 2, first bent plate body 201, second bent plate body 202, third bent plate body 203, first hinge structure 3, second hinge structure 4, first support seat 5, second support seat 6, boom 7, turntable 8, boom pitch cylinder 9, crank arm pitch cylinder 10.
[0034] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0037] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0038] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0039] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0040] Example 1
[0041] like Figures 1 to 3The figure shows a sword-like crank arm structure disclosed in the present embodiment, which mainly includes a rib plate 2 and two symmetrical side plates 1. The rib plate 2 is fixedly connected between the two side plates 1 by welding. Among them, the first end of the side plate 1 is provided with a first hinge structure 3 for hingedly connecting the boom 7; the second end of the side plate 1 is provided with a second hinge structure 4 for hingedly connecting the turntable 8. The side plate 1 has a first protrusion 101 extending upward near the first end, and the first protrusion 101 is provided with a first hinge hole 102 for hingedly connecting the boom pitch cylinder 9.
[0042] In the specific implementation process, the first hinge structure 3 is a hinge hole opened at the first ends of the two side panels 1, or a shaft sleeve can be set at the first ends of the two side panels 1 as the first hinge structure 3. Similarly, the second hinge structure 4 can be a hinge hole opened at the second ends of the two side panels 1, or a shaft sleeve welded to the second ends of the two side panels 1.
[0043] In this embodiment, the first protrusion 101 is an arc-shaped plate structure as a whole, the first protrusion 101 is integrally formed with the side plate 1, and the first hinge holes 102 on the two side plates 1 are coaxial. When the boom pitch cylinder 9 is assembled, the end of the boom pitch cylinder 9 is located between the two side plates 1 and is connected to the first hinge holes 102 on the two side plates 1 through a pin shaft.
[0044] As a preferred embodiment, the side plate 1 has a second protrusion 103 extending downward near the first end, and the second protrusion 103 is provided with a second hinge hole 104 for hingedly connecting the crank arm pitch cylinder 10. Like the first protrusion 101, the second protrusion 103 also adopts an arc plate structure, and the second protrusion 103 is integrally formed with the side plate 1, and the second hinge holes 104 on the two side plates 1 are coaxial. When the crank arm pitch cylinder 10 is assembled, the end of the crank arm pitch cylinder 10 is located between the two side plates 1, and is connected to the second hinge holes 104 on the two side plates 1 through a pin shaft.
[0045] The sword-like crank arm structure in this embodiment can effectively reduce the distance between the first hinge hole 102, the second hinge hole 104 and the main structure of the crank arm by integrating the hinge points of the boom pitch cylinder 9 and the crank arm pitch cylinder 10 with the side plate 1, and thus can effectively reduce the gap between the crank arm and the boom 7 and between the crank arm and the arm support surface, thereby achieving the purpose of lowering the height of the boom and the trolley.
[0046] In this embodiment, the side plate 1 includes a first plate 105, a second plate 106 and a third plate 107 connected in sequence. The first hinge structure 3 and the first protrusion 101 are both located on the first plate 105, the second hinge structure 4 is located on the third plate 107, and the first plate 105 and the third plate 107 are both thicker than the second plate 106. Figure 4The side plate 1 adopts a thick plate-thin plate-thick plate structural design, that is, a thick plate is used at the hinge point position where the force is greater on the side plate 1, and a thin plate is used at the middle position where the force is less, thereby effectively improving the overall strength of the crank arm structure and reducing the weight of the product.
[0047] In the specific implementation process, the first plate body 105, the second plate body 106 and the third plate body 107 can be fixed by welding or die-casting at one time. It is worth noting that the side plate 1 can also be a flat plate with a fixed thickness.
[0048] In this embodiment, the rib plate 2 is a bent plate structure, and the whole is a special-shaped ring plate structure, which is used to cooperate with the two side plates 1 to form a curved arm of the box structure. Figure 3 The top of the rib plate 2 includes a first bent plate body 201, a second bent plate body 202 and a third bent plate body 203 which are connected in sequence. Part or all of the second bent plate body 202 is connected to the first plate body 105, and the second bent plate body 202 is thicker than the first bent plate body 201 and the third bent plate body 203. That is, the rib plate 2 adopts a thin plate-thick plate-thin plate structural design, and the rib plate 2 is thickened at a position corresponding to the first plate body 105 close to the second plate body 106, thereby further improving the overall strength of the crank structure and optimizing the product weight.
[0049] During the specific implementation process, the positions corresponding to the first protrusion 101 and the second protrusion 103 on the rib plate 2 are both thin plates and are both designed with concave structures to make way for the boom pitch cylinder 9 and the curved arm pitch cylinder 10, thereby avoiding interference problems when the boom pitch cylinder 9 and the curved arm pitch cylinder 10 are working.
[0050] It is worth noting that in the specific application process, it is not limited to using the rib plate 2 with a bent plate structure, and a plurality of discrete beams can also be directly arranged between the two side plates 1 as the rib plate 2.
[0051] The sword-like crank arm structure in this embodiment further includes a first support seat 5, which is located near the second end of the side plate 1, and the first support seat 5 is fixedly connected to the side plate 1 and the rib plate 2 by welding, so as to support the boom pitch cylinder 9 when the boom is retracted. Figure 5 shown.
[0052] The sword-like curved arm structure in this embodiment also includes a second support seat 6, which is located near the first end of the side plate 1, and the second support seat 6 is fixedly connected to the side plate 1 and the rib plate 2 by welding, so as to support the curved arm when the boom is retracted.
[0053] Example 2
[0054] like Figure 5 , Figure 6The figure shows a boom disclosed in this embodiment, which mainly includes a slewing platform 8, a boom 7, a boom pitching cylinder 9, a crank arm pitching cylinder 10 and the sharp sword crank arm structure in Embodiment 1. The slewing platform 8, the sharp sword crank arm structure and the boom 7 are hinged in sequence, the boom pitching cylinder 9 is hinged between the boom 7 and the first hinge hole 102 on the sharp sword crank arm structure, and the crank arm pitching cylinder 10 is hinged between the slewing platform 8 and the second hinge hole 104 on the sharp sword crank arm structure.
[0055] Since the sword-like crank arm structure integrates the hinge points of the boom pitch cylinder 9 and the crank arm pitch cylinder 10 with the side plate 1 of the crank arm, the overall height of the boom can be reduced when the boom is folded.
[0056] Example 3
[0057] This embodiment discloses a trolley, which mainly includes a trolley body and the boom in Embodiment 2. The trolley in this embodiment adopts the sharp sword-like curved arm structure in Embodiment 1, so that the trolley can have a handover height when the trolley is retracted, so that the trolley can directly enter the road surface or tunnel construction site with height restrictions, etc., which can effectively solve the problem of difficulty in trolley transportation or construction due to the high height of the whole machine.
[0058] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.
Claims
1. A sword-like curved arm structure, characterized in that: It includes a rib plate and two symmetrical side plates, wherein the rib plate is fixedly connected between the two side plates; The first end of the side plate is provided with a first hinge structure for hingedly connecting the upper arm; The second end of the side plate is provided with a second hinge structure for hingedly connecting the turntable; A first protrusion extending upward is provided on the side plate near the first end, and a first hinge hole is provided on the first protrusion for hingedly connecting the boom pitch cylinder.
2. The sword-like curved arm structure according to claim 1, characterized in that: A second protrusion extending downward is provided on the side plate near the first end, and a second hinge hole is provided on the second protrusion for hingedly connecting the crank arm pitch cylinder.
3. The sword-like curved arm structure according to claim 2, characterized in that: The first protrusion and the second protrusion are both integrally formed with the side plate.
4. The sword-like curved arm structure according to claim 1, 2 or 3, characterized in that: The side plate comprises a first plate body, a second plate body and a third plate body which are connected in sequence; The first hinge structure and the first protrusion are both located on the first plate body, and the second hinge structure is located on the third plate body.
5. The sword-like curved arm structure according to claim 4, characterized in that: The first plate body and the third plate body are both thicker than the second plate body.
6. The sword-like curved arm structure according to claim 5, characterized in that: The rib plate is a bent plate structure, which is used to cooperate with the two side plates to form a curved arm of the box structure.
7. The sword-like curved arm structure according to claim 6, characterized in that: The top of the rib plate includes a first bent plate body, a second bent plate body and a third bent plate body which are connected in sequence.
8. The sword-like curved arm structure according to claim 7, characterized in that: Part or all of the second bent plate is connected to the first plate, and the second bent plate is thicker than the first bent plate and the third bent plate.
9. The sword-like curved arm structure according to claim 1, 2 or 3, characterized in that: It also includes a first support seat, which is located near the second end of the side plate, and the first support seat is fixedly connected to the side plate and the rib plate to support the boom pitch cylinder.
10. The sword-like curved arm structure according to claim 1, 2 or 3, characterized in that: It also includes a second support seat, which is located near the first end of the side plate, and the second support seat is fixedly connected to the side plate and the rib plate to support the curved arm.
11. A boom, characterized in that: It comprises a slewing platform, a boom, a boom pitch cylinder, a crank arm pitch cylinder and the sword-like crank arm structure according to any one of claims 1 to 10; The turntable, the sword-like crank arm structure and the boom are hinged in sequence, the boom pitch cylinder is hinged between the boom and the sword-like crank arm structure, and the crank arm pitch cylinder is hinged between the turntable and the sword-like crank arm structure.
12. A trolley, characterized in that: The trolley is provided with the arm support as claimed in claim 11.