An assembled oil cylinder support, telescopic variable rail chassis and engineering machinery
By designing a U-shaped cylinder support, the mating surface between the pin and the support is enhanced, solving the problem of excessively large support volume in existing technologies, and achieving a compact structure and low cost on a small to medium tonnage telescopic variable rail chassis.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XCMG EXCAVATOR MACHINERY CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-09
AI Technical Summary
Existing assembled hydraulic cylinder supports, with fewer mating surfaces between the pin and the support, cannot meet the strength requirements of small and medium tonnage telescopic variable rail chassis, resulting in excessively large support volumes that cannot adapt to smaller cavity chassis.
A U-shaped cylinder support was designed, which uses a combination of pin, transition sleeve and clamping component to increase the mating surface between the pin and the support. Through the limiting structure of the transition sleeve and clamping component, it can achieve multi-angle force adaptability, which is highly adaptable and the support volume is smaller.
It achieves the goal of meeting the operational and transportation needs of engineering machinery on a relatively small cavity chassis, with a compact structure and low cost.
Smart Images
Figure CN224339270U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an assembled hydraulic cylinder support, belonging to the field of engineering machinery chassis design technology. Background Technology
[0002] To improve the overall stability of construction machinery during operation, a wider chassis is needed for operation; however, for convenient relocation and transportation, the required transport width must be met. Therefore, a telescopic variable-track chassis was designed. The structure of the telescopic variable-track chassis is as follows: the left and right longitudinal beams are telescopic, one end of a hydraulic cylinder is mounted on the frame, and the other end is mounted inside the longitudinal beam cavity. The chassis changes tracks by extending and retracting the hydraulic cylinder. However, a hydraulic cylinder support is provided at the connection between the hydraulic cylinder and the longitudinal beam.
[0003] In conventional hydraulic cylinder supports, because the pin needs to be inserted from the side, sufficient space needs to be left in the crossbeam at the outer end of the longitudinal beam to accommodate the pin. To meet the chassis's transport width requirements, the chassis design width is limited.
[0004] Existing modular cylinder mounts are assembleable, but the mating surfaces between the pins and the supports are limited. To meet the support strength requirements, the support volume needs to be increased to enlarge the mating surfaces, making them unsuitable for chassis with smaller cavities. Therefore, to address this issue, a new structure is needed that can adapt to medium-to-small tonnage telescopic changeover chassis. Summary of the Invention
[0005] To address the problems existing in the prior art, this utility model provides a newly designed assembled hydraulic cylinder support. When the hydraulic cylinder is working, the mating surface between the support and the pin has a half-circle arc, resulting in a larger mating surface that can adapt to multi-angle forces on the hydraulic cylinder, thus exhibiting strong adaptability. Compared to existing assembled hydraulic cylinder supports, for the same load, the support volume can be smaller, the structure more compact, and it can be adapted to smaller chassis.
[0006] This utility model is achieved according to the following technical solution:
[0007] In a first aspect, this utility model provides an assembled hydraulic cylinder support, comprising:
[0008] The base has a U-shaped structure and consists of a base plate and two oppositely arranged side plates. Each of the two side plates has a slot that is oppositely arranged and has its opening facing the same direction.
[0009] A pin passes through two slots in the support and is used to hinge with a lug on the oil cylinder.
[0010] The transition sleeves are respectively installed in the slots of the two side plates, and the two axial ends of the pin are inserted into the corresponding transition sleeves. The two transition sleeves axially limit the pin.
[0011] Clamping components are respectively arranged on the top surface of the two side uprights, and the clamping components are used to fix the transition sleeve in the slot.
[0012] In some embodiments, the slot is a square slot, and the outer contour of the transition sleeve is a cuboid structure. The transition sleeve is engaged in the square slot to restrict the circumferential rotation of the transition sleeve. The transition sleeve is provided with a mounting port coaxial with the pin, and the axial end of the pin is inserted into the mounting port.
[0013] In some embodiments, the mounting port is configured as a stepped through hole for limiting axial movement of the pin and for reducing the weight of the transition sleeve.
[0014] In some embodiments, the transition sleeve extends radially outward from the end face located on the inner side of the side plate to form a shoulder, which fits against the inner side of the side plate to limit the axial movement of the transition sleeve in the slot.
[0015] In some embodiments, the clamping component includes a pressure plate and a fastener; the transition sleeve is engaged in a slot, the top surface of the transition sleeve is flush with the top surface of the side plate, and the pressure plate presses against the top surfaces of the transition sleeve and the side plate; the fastener is configured to fix and release the pressure plate from the side plate.
[0016] In some embodiments, the fastener includes two bolts, and each of the side plates on both sides of the slot has a vertically downward threaded hole. The pressure plate has two through holes that correspond one-to-one with the threaded holes. The bolts pass through the through holes and are tightened in the bolt holes to fix the pressure plate and the side plates together.
[0017] In some embodiments, the lower outer surface region of the side plate is provided with a notch for avoiding the frame; and / or, the lower inner surface region of the side plate is provided with a protruding structure for enhancing the root strength, wherein the top surface of the protruding structure is a concave arc surface.
[0018] In some embodiments, the assembled hydraulic cylinder support has a front-to-back symmetrical structure and a left-to-right symmetrical structure.
[0019] Secondly, this utility model provides a telescopic track-changing chassis, including a hydraulic cylinder, a frame, longitudinal beams located on both sides of the frame, and the aforementioned assembled hydraulic cylinder support; the base of the assembled hydraulic cylinder support is welded inside the cavity of the longitudinal beam, one end of the hydraulic cylinder is hinged to the frame, and the other end is hinged to the pin in the assembled hydraulic cylinder support.
[0020] Thirdly, this utility model provides an engineering machinery, including the above-mentioned assembled hydraulic cylinder support; or, including the above-mentioned telescopic track-changing chassis.
[0021] The beneficial effects of this utility model are:
[0022] The assembled hydraulic cylinder support provided by this utility model can be used with hydraulic cylinders to achieve large-scale extension and retraction of the chassis. It has a simple structure, low cost, and is suitable for chassis with smaller cavity, thus meeting the operation and transportation needs of engineering machinery. Attached Figure Description
[0023] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.
[0024] In the attached diagram:
[0025] Figure 1 An exploded view of a prefabricated hydraulic cylinder support in the prior art;
[0026] Attached diagram labels: 10-outer support, 20-inner support, 30-pressure plate, 40-bolt, 50-pin.
[0027] Figure 2 This is a perspective view of the assembled hydraulic cylinder support of this utility model;
[0028] Figure 3 This is a sectional view of the assembled hydraulic cylinder support of this utility model.
[0029] Attached diagram labels: 4-1-base, 4-2-transition sleeve, 4-3-pin, 4-4-pressure plate, 4-5-bolt.
[0030] Figure 4 This is a schematic diagram of the chassis of this utility model in its retracted state during transportation.
[0031] Figure 5 This is a schematic diagram of the chassis of this utility model in its extended working state.
[0032] Attached diagram labels: 1-frame, 2-longitudinal beam, 3-cylinder, 4-assembled cylinder support.
[0033] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0035] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0037] Figure 1 The existing assembled hydraulic cylinder support requires first placing the inner support 20 into the outer support 10, then assembling one end pressure plate 30 and securing it with bolts 40. Next, the hydraulic cylinder and pin 50 are assembled and placed into the groove of the inner support 20, followed by assembling the other end pressure plate 30, and finally securing with bolts 40 to complete the assembly. When the hydraulic cylinder is working, the mating surface between the support and the pin is only a quarter-circle. To meet the support strength requirements, the inner support needs to be enlarged to increase the mating surface between the support and the pin, ultimately resulting in a larger support volume. This makes it unsuitable for chassis with smaller cavities, and the complex structure leads to higher costs.
[0038] To address the problems existing in the prior art, this utility model provides a newly designed assembled hydraulic cylinder support. When the hydraulic cylinder is working, the mating surface between the support and the pin has a half-circle arc, resulting in a larger mating surface that can adapt to multi-angle forces on the hydraulic cylinder, thus exhibiting strong adaptability. Compared to existing assembled hydraulic cylinder supports, for the same load, the support volume can be smaller, the structure more compact, and it can be adapted to smaller chassis.
[0039] like Figure 2 , Figure 3As shown, an assembled hydraulic cylinder support includes a U-shaped base 4-1, a pin 4-3, a transition sleeve 4-2, and a clamping component. The base 4-1 consists of a base plate and two oppositely arranged side plates, each of which has a slot facing opposite directions. The pin 4-3 passes through the two slots of the support and is used to hinge with a lug on the hydraulic cylinder. The transition sleeves 4-2 are respectively installed in the slots of the two side plates, and the two axial ends of the pin 4-3 are inserted into the corresponding transition sleeves 4-2, thereby axially limiting the pin 4-3. The clamping component is arranged on the top surface of the two side plates and is used to fix the transition sleeves 4-2 in the slots.
[0040] The following provides a further explanation of the specific structure of the aforementioned transition sleeve.
[0041] Continue to refer to Figure 2 , Figure 3 As shown, the slot is a square slot, and the outer contour of the transition sleeve 4-2 is a cuboid structure. The transition sleeve 4-2 is engaged in the square slot to restrict the circumferential rotation of the transition sleeve 4-2. The transition sleeve 4-2 is provided with an installation port with the same central axis as the pin 4-3, and the axial end of the pin 4-3 is inserted into the installation port.
[0042] Further plans will continue to be considered. Figure 2 , Figure 3 As shown, the mounting port is set as a stepped through hole, which serves two purposes: firstly, to restrict the axial movement of the pin 4-3, and secondly, to reduce the weight of the transition sleeve 4-2.
[0043] Further plans will continue to be considered. Figure 2 , Figure 3 As shown, the transition sleeve 4-2 extends radially outward from the end face located on the inner side of the side plate to form a shoulder. The shoulder fits against the inner side of the side plate, limiting the axial movement of the transition sleeve 4-2 in the slot.
[0044] It should be noted that the axial positioning of the transition sleeve is not limited to the fit between the shoulder and the inner side of the side plate; it can also be achieved by fixing the transition sleeve with bolts.
[0045] The following provides a further explanation of the specific structure of the aforementioned clamping component.
[0046] Continue to refer to Figure 2 , Figure 3 As shown, the clamping component includes a pressure plate 4-4 and a fastener; the transition sleeve 4-2 is engaged in a slot, the top surface of the transition sleeve 4-2 is flush with the top surface of the side plate, and the pressure plate 4-4 presses on the top surfaces of the transition sleeve 4-2 and the side plate; the fastener is configured to fix and release the pressure plate 4-4 from the side plate.
[0047] Further plans will continue to be considered. Figure 2 , Figure 3 As shown, the fastener includes two bolts 4-5. Each of the side plates on both sides of the slot has a vertically downward threaded hole. The pressure plate 4-4 has two through holes that correspond one-to-one with the threaded holes. The bolts 4-5 pass through the through holes and are screwed into the bolt holes to fix the pressure plate 4-4 and the side plate together.
[0048] The following is a further explanation of the specific structure of the aforementioned base.
[0049] Continue to refer to Figure 2 , Figure 3 As shown, the lower part of the outer side of the side plate has a notch for avoiding the frame; the lower part of the inner side of the side plate has a protruding structure for strengthening the root, and the top surface of the protruding structure is a concave arc surface.
[0050] A further proposed design is a prefabricated hydraulic cylinder support with a front-to-back symmetrical structure and a left-to-right symmetrical structure.
[0051] When in use, after the pin and the cylinder are assembled, transition sleeves are then installed at both ends of the pin, and then it is placed from directly above the base. Next, a pressure plate is installed directly above the base, and finally, it is fixed with bolts (the pin is axially limited by the shoulders on the inner side of the transition sleeves at both ends).
[0052] In summary, this utility model provides a newly designed assembled hydraulic cylinder support. When the hydraulic cylinder is working, the mating surface between the support and the pin has a half-circle arc, resulting in a larger mating surface that can adapt to multi-angle forces on the hydraulic cylinder, thus exhibiting strong adaptability. Compared with existing assembled hydraulic cylinder supports, for the same load, the support volume can be made smaller, the structure more compact, and it can be adapted to smaller chassis, meeting the operational and transportation requirements of engineering machinery.
[0053] The telescopic track-changing chassis provided by this utility model is described below. The telescopic track-changing chassis described below and the assembled hydraulic cylinder support described above can be referred to in correspondence.
[0054] like Figure 4 , Figure 5 As shown, this utility model provides a telescopic track-changing chassis, including a hydraulic cylinder 3, a frame 1, longitudinal beams 2 located on both sides of the frame 1, and the aforementioned assembled hydraulic cylinder support 4. The base of the assembled hydraulic cylinder support 4 is welded inside the cavity of the longitudinal beam. One end of the hydraulic cylinder 3 is hinged to the frame 1, and the other end is hinged to a pin in the assembled hydraulic cylinder support 4. By using the telescopic track-changing chassis in conjunction with the assembled hydraulic cylinder support, the assembly of the hydraulic cylinder pin in a limited space is achieved.
[0055] The beneficial effects achieved by the telescopic variable track chassis provided by this utility model are consistent with the beneficial effects achieved by the assembled hydraulic cylinder support provided by this utility model, so they will not be repeated here.
[0056] The following describes the engineering machinery provided by this utility model. The engineering machinery described below can be referred to in correspondence with the telescopic and variable track chassis described above.
[0057] The engineering machinery provided by this utility model may include a telescopic and variable track chassis as described in any of the above embodiments.
[0058] The beneficial effects achieved by the engineering machinery provided by this utility model are consistent with the beneficial effects achieved by the telescopic and variable track chassis provided by this utility model, so they will not be repeated here.
[0059] It should be noted that the aforementioned construction machinery can be tracked cranes, tracked excavators, tracked pump trucks, or other tracked construction machinery.
[0060] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.
[0061] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.
[0062] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A prefabricated hydraulic cylinder support, characterized in that, include: The base has a U-shaped structure and consists of a base plate and two oppositely arranged side plates. Each of the two side plates has a slot that is oppositely arranged and has its opening facing the same direction. A pin passes through two slots in the support and is used to hinge with a lug on the oil cylinder. The transition sleeves are respectively installed in the slots of the two side plates, and the two axial ends of the pin are inserted into the corresponding transition sleeves. The two transition sleeves axially limit the pin. Clamping components are respectively arranged on the top surface of the two side uprights, and the clamping components are used to fix the transition sleeve in the slot.
2. The assembled hydraulic cylinder support according to claim 1, characterized in that: The slot is a square slot, and the outer contour of the transition sleeve is a cuboid structure. The transition sleeve is engaged in the square slot to restrict the circumferential rotation of the transition sleeve. The transition sleeve has a mounting port with the same central axis as the pin, and the axial end of the pin is inserted into the mounting port.
3. The assembled hydraulic cylinder support according to claim 2, characterized in that: The mounting port is configured as a stepped through hole to restrict axial movement of the pin and to reduce the weight of the transition sleeve.
4. The assembled hydraulic cylinder support according to claim 1, characterized in that: The transition sleeve extends radially outward from the end face located on the inner side of the side plate to form a shoulder. The shoulder fits against the inner side of the side plate, limiting the axial movement of the transition sleeve in the slot.
5. The assembled hydraulic cylinder support according to claim 1, characterized in that: The clamping component includes a pressure plate and a fastener; the transition sleeve is engaged in a slot, the top surface of the transition sleeve is flush with the top surface of the side plate, and the pressure plate presses on the top surfaces of the transition sleeve and the side plate; the fastener is configured to fix and release the pressure plate from the side plate.
6. The assembled hydraulic cylinder support according to claim 5, characterized in that: The fastener includes two bolts. Each of the side plates on both sides of the slot has a vertically downward threaded hole. The pressure plate has two through holes that correspond one-to-one with the threaded holes. The bolts pass through the through holes and are tightened in the bolt holes to fix the pressure plate and the side plates together.
7. The assembled hydraulic cylinder support according to claim 1, characterized in that: The lower outer surface of the side panel has a notch for avoiding the vehicle frame; and / or, The lower part of the inner side surface of the side plate is provided with a protruding structure for enhancing the strength of the root, and the top surface of the protruding structure is a concave arc surface.
8. The assembled hydraulic cylinder support according to claim 1, characterized in that: The assembled hydraulic cylinder support has a front-to-back symmetrical structure and a left-to-right symmetrical structure.
9. A telescopic track-changing chassis, comprising a hydraulic cylinder, a frame, and longitudinal beams located on both sides of the frame, characterized in that: It also includes the assembled hydraulic cylinder support as described in any one of claims 1 to 8; The base of the assembled hydraulic cylinder support is welded inside the longitudinal beam cavity. One end of the hydraulic cylinder is hinged to the frame, and the other end is hinged to the pin in the assembled hydraulic cylinder support.
10. An engineering machinery, characterized in that: It includes the assembled hydraulic cylinder support as described in any one of claims 1 to 8; or, it includes the telescopic variable track chassis as described in claim 9.