A frame assembly and an engineering machine
Patent Information
- Application Number
- CN202522606829.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-09
AI Technical Summary
而锁定销普遍通过人工手动穿入，穿入过程中锁定销易产生晃动，影响锁定销插入精准度，使锁定销会相对锁孔发生轴向偏移，这将导致锁定销插入位置偏移，致使偏移侧将与对应侧的锁孔内壁产生较大摩擦，严重时会使锁定销与锁孔之间出现卡滞情况，不易于锁定销的可靠插入，影响锁定销插入的精确性以及锁定效率
[0021]本实用新型提供的车架总成，当彼此铰接的第一车架与第二车架相对摆动至锁定位置时，第一锁孔、第二锁孔和第三锁孔处于轴线重合的位置，此时插入锁定销。锁定销沿竖直方向依次穿设第二锁孔和第一锁孔后与第三锁孔固定连接，从而对第一车架与第二车架进行锁定。通过设置定位施力件，定位施力件能够对穿设于第一锁孔的锁定销施加定位力，锁定销受驱于定位施力件移动，最终使得锁定销移动至自身轴线重合于第一锁孔的轴线，从而对锁定销插入后提供有效定位，避免锁定销插入过程中随意晃动以发生轴线偏移的情况，确保锁定销插入位置精确可靠，使锁定销最终能够更加准确地与第二锁孔实现对接，提升锁定操作效率。
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Figure CN224898930U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering machinery technology, and in particular to a chassis assembly and engineering machinery. Background Technology
[0002] For construction machinery such as loaders, where the front and rear frames are articulated, the front and rear frames need to be locked when they swing to a certain position. Taking a current frame assembly structure as an example, it includes a hinged front and rear frame, each with locking holes. A locking pin is used to vertically pass through the locking holes of the loader's front and rear frames from top to bottom. Specifically, the locking pin is fixed after passing through the locking holes of the front and rear frames vertically, thus locking the front and rear frames. However, the locking pin is usually inserted manually. During insertion, the locking pin is prone to shaking, affecting the accuracy of insertion and causing axial displacement of the locking pin relative to the locking hole. This leads to a misalignment of the locking pin's insertion position, resulting in significant friction between the offset side and the inner wall of the corresponding locking hole. In severe cases, this can cause jamming between the locking pin and the locking hole, making reliable insertion difficult and affecting the accuracy and locking efficiency. Utility Model Content
[0003] The purpose of this utility model is to provide a frame assembly that can effectively position the locking pin after it is inserted, thus preventing the locking pin from shaking randomly during the insertion process.
[0004] To achieve this objective, the present invention adopts the following technical solution:
[0005] A frame assembly, comprising:
[0006] The first frame has a first lock hole;
[0007] The second frame is hinged to the first frame. The second frame is provided with an upper locking part and a lower locking part at intervals along the vertical direction. The upper locking part has a second locking hole and the lower locking part has a third locking hole. The first frame is located between the upper locking part and the lower locking part.
[0008] The locking pin can pass through the second locking hole and the first locking hole in a vertical direction and then be fixedly connected to the third locking hole to lock the first frame and the second frame.
[0009] A positioning force-applying component is used to apply a positioning force to the locking pin that passes through the first lock hole, so that the axis of the locking pin coincides with the axis of the first lock hole.
[0010] Preferably, the positioning force-applying component includes a mounting base, a top pin, and an elastic element. The mounting base is fixedly sleeved in the first locking hole. The side wall of the mounting base is provided with a plurality of receiving grooves spaced apart circumferentially. Each receiving groove is provided with the top pin. The elastic element is disposed between the top pin and the bottom of the receiving groove. The elastic element is used to provide a force that forces the top pin to extend out of the receiving groove, so that the plurality of top pins together press against the outer periphery of the locking pin.
[0011] Preferably, the positioning force-applying component further includes a positioning sleeve sleeved on the locking pin, the positioning sleeve having a positioning ring groove, and multiple top pins being able to extend into and abut against the positioning ring groove together.
[0012] Preferably, the upper end of the mounting base is bent to provide a connecting eave, which is supported on the outer edge of the first lock hole.
[0013] Preferably, the connecting eaves has a through hole, and the first frame has a corresponding threaded hole, with the fastening screw passing through the through hole and threadedly connected to the threaded hole.
[0014] Preferably, the locking pin includes a first pin portion and a second pin portion arranged in a stepped manner. The diameter of the first pin portion is larger than the diameter of the second pin portion. The second pin portion passes through the second locking hole and the first locking hole in sequence and is then fixedly connected to the third locking hole. The first pin portion passes through the second locking hole and is supported on the first frame.
[0015] Preferably, the second pin has an external thread on the outer periphery of the end facing away from the first pin, and the inner peripheral wall of the third locking hole has an internal thread, and the second pin is threadedly connected to the third locking hole.
[0016] Preferably, the end of the second pin facing away from the first pin is provided with a guide chamfer.
[0017] Preferably, the elastic element is a spring, with one end of the spring abutting the bottom of the receiving groove and the other end abutting the top pin.
[0018] This utility model also provides an engineering machine, including the above-mentioned frame assembly, which can provide effective positioning after the locking pin is inserted, prevent the locking pin from shaking randomly during the insertion process, and ensure reliable locking between the first frame and the second frame.
[0019] An engineering machine includes a frame assembly as described in any of the above claims, and a vehicle body disposed on the frame assembly.
[0020] Beneficial effects:
[0021] The frame assembly provided by this utility model allows for the insertion of a locking pin when the first and second frames, which are hinged together, swing relative to each other to the locked position. At this point, the first, second, and third locking holes are aligned on their axes. The locking pin then passes vertically through the second and first locking holes and is fixedly connected to the third locking hole, thereby locking the first and second frames. A positioning force-applying component applies a positioning force to the locking pin passing through the first locking hole. Driven by the positioning force-applying component, the locking pin moves until its axis aligns with the axis of the first locking hole. This provides effective positioning after insertion, preventing the locking pin from wobbling during insertion and causing axial misalignment. This ensures accurate and reliable insertion, allowing the locking pin to more accurately engage with the second locking hole, thus improving the efficiency of the locking operation.
[0022] The engineering machinery provided by this utility model includes the aforementioned frame assembly. By setting a positioning force-applying component, it can effectively position the locking pin after insertion, preventing the locking pin from shaking randomly during insertion and ensuring reliable locking between the first frame and the second frame. Attached Figure Description
[0023] Figure 1 A partial structural schematic diagram of the frame assembly provided by this utility model;
[0024] Figure 2 An exploded view of the positioning and force-applying component provided by this utility model;
[0025] Figure 3 A schematic diagram of the locking pin provided by this utility model;
[0026] Figure 4 A side sectional view of the frame assembly provided by this utility model.
[0027] In the picture:
[0028] 1. First frame; 111. First locking hole; 112. Threaded hole; 11. Fastening screw; 12. Limiting plate; 121. Bolt;
[0029] 2. Second frame; 21. Upper locking part; 211. Second locking hole; 22. Lower locking part; 221. Third locking hole;
[0030] 3. Locking pin; 31. First pin section; 32. Second pin section; 321. Guide chamfer;
[0031] 4. Positioning force-applying component; 41. Mounting base; 411. Receiving groove; 4111. Sealing head; 412. Connecting eaves; 4121. Through hole; 42. Top pin; 43. Elastic component; 44. Positioning sleeve; 441. Positioning ring groove; 442. Limiting groove. Detailed Implementation
[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0034] 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0036] This embodiment provides a vehicle frame assembly. (Refer to...) Figures 1 to 4As shown, the frame assembly includes a first frame 1, a second frame 2, a locking pin 3, and a positioning force-applying component 4. The first frame 1 has a first locking hole 111. The second frame 2 is hinged to the first frame 1. The second frame 2 has an upper locking part 21 and a lower locking part 22 spaced apart vertically. The upper locking part 21 has a second locking hole 211, and the lower locking part 22 has a third locking hole 221. The first frame 1 is located between the upper locking part 21 and the lower locking part 22. The locking pin 3 can pass through the second locking hole 211 and the first locking hole 111 vertically and then be fixedly connected to the third locking hole 221 to lock the first frame 1 and the second frame 2. The positioning force-applying component 4 applies a positioning force to the locking pin 3 passing through the first locking hole 111, causing the axis of the locking pin 3 to coincide with the axis of the first locking hole 111.
[0037] In this embodiment, when the first frame 1 and the second frame 2, which are hinged to each other, swing relative to each other to the locked position, the first lock hole 111, the second lock hole 211, and the third lock hole 221 are in a position where their axes coincide. At this time, the locking pin 3 is inserted. The locking pin 3 passes through the second lock hole 211 and the first lock hole 111 in sequence along the vertical direction and is then fixedly connected to the third lock hole 221, thereby locking the first frame 1 and the second frame 2. By setting a positioning force-applying component 4, the positioning force-applying component 4 can apply a positioning force to the locking pin 3 passing through the first lock hole 111. The locking pin 3 is driven to move by the positioning force-applying component 4, and finally moves the locking pin 3 until its own axis coincides with the axis of the first lock hole 111. This provides effective positioning for the locking pin 3 after insertion, avoids the locking pin 3 from shaking randomly during the insertion process and causing axis deviation, ensures that the insertion position of the locking pin 3 is accurate and reliable, and enables the locking pin 3 to be more accurately docked with the second lock hole 211, thereby improving the efficiency of the locking operation.
[0038] In this embodiment, the positioning force-applying component 4 includes a mounting base 41, a top pin 42, and an elastic element 43. The mounting base 41 is fixedly sleeved within the first locking hole 111. The sidewall of the mounting base 41 is provided with multiple accommodating grooves 411 spaced circumferentially. Each accommodating groove 411 contains a top pin 42. The elastic element 43 is located between the top pin 42 and the bottom of the accommodating groove 411. The elastic element 43 provides a force that forces the top pin 42 to extend outward from the accommodating groove 411, causing the multiple top pins 42 to collectively press against the outer periphery of the locking pin 3. Specifically, the top pin 42 is telescopically disposed within the accommodating groove 411, extending outward from the accommodating groove 411 under the elastic force of the elastic element 43. Specifically, the multiple accommodating grooves 411 are evenly spaced circumferentially along the sidewall of the mounting base 41. For example, four accommodating grooves 411 are provided, with each groove spaced at a 90° angle. Specifically, when the locking pin 3 is inserted into the first locking hole 111, the locking pin 3 passes through the mounting base 41. During this process, the outer periphery of the locking pin 3 will contact multiple top pins 42. Under the elastic force of their respective corresponding elastic elements 43, the multiple top pins 42 jointly abut against the outer periphery of the locking pin 3. That is, the multiple top pins 42 jointly apply a positioning force to the locking pin 3, thereby continuously correcting the axial position of the locking pin 3 during the insertion process, so that the axis of the locking pin 3 coincides with the axis of the first locking hole 111, avoiding the locking pin 3 from shaking randomly during the insertion process. In this way, the locking pin 3 can be aligned with the second locking hole 211 after moving further downward, achieving a reliable and accurate insertion in one go, avoiding repeated insertions due to inaccurate positioning, and improving locking efficiency.
[0039] In this embodiment, the elastic element 43 is a spring, with one end of the spring abutting the bottom of the receiving groove 411 and the other end abutting the top pin 42. Specifically, a sealing head 4111 is provided on one side of the bottom of the receiving groove 411, with one end of the spring abutting the sealing head 4111 of the receiving groove 411 and the other end abutting the top pin 42.
[0040] In this embodiment, the upper end of the mounting base 41 is bent to provide a connecting eave 412, which is supported on the outer edge of the first locking hole 111. The connecting eave 412 is supported on the outer edge of the first locking hole 111, that is, the connecting eave 412 is supported and engaged with the end face of the first frame. This arrangement can realize the installation and positioning of the mounting base 41 and prevent the mounting base 41 from moving up and down along the axial direction of the first locking hole 111.
[0041] Specifically, the connecting eaves 412 has a through hole 4121, and the first frame 1 has a corresponding threaded hole 112. The fastening screw 11 passes through the through hole 4121 and is threaded into the threaded hole 112. By passing through the through hole 4121 and then screwing into the threaded hole 112, the connecting eaves 412 can be fixed to the first frame, thereby achieving reliable fixation between the mounting base 41 and the first locking hole 111.
[0042] Furthermore, the positioning force-applying component 4 also includes a positioning sleeve 44 sleeved on the locking pin 3. The positioning sleeve 44 has a positioning ring groove 441, and multiple top pins 42 can extend into and abut against the positioning ring groove 441. Specifically, the abutting cooperation between the top pins 42 and the positioning ring groove 441 can further achieve axial positioning of the positioning sleeve 44. The top pins 42 are locked in the positioning ring groove 441, effectively preventing the positioning sleeve 44 from moving up and down arbitrarily. Specifically, when the locking pin 3 is removed from the positioning sleeve 44, the positioning sleeve 44 is still located in the mounting seat 41 of the first locking hole 111. At this time, the abutting cooperation between the top pins 42 and the positioning ring groove 441 can reliably position the positioning sleeve 44, preventing the positioning sleeve 44 from accidentally coming out of the first locking hole 111 when the first frame 1 experiences a large bump.
[0043] Furthermore, a limiting plate 12 is provided on the lower end face of the first frame 1, and the limiting plate 12 is fixedly connected to the first frame 1 by fasteners such as bolts 121. A limiting groove 442 is correspondingly formed on the outer periphery of the positioning sleeve 44, and the end of the limiting plate 12 extends into the limiting groove 442. Along the axial direction of the first locking hole 111, the limiting groove 442 and the limiting plate 12 are clearance-fitted. Specifically, the width of the limiting groove 442 is slightly larger than the thickness of the limiting plate 12. This arrangement allows the limiting plate 12 to allow the positioning sleeve 44 to move up and down appropriately, while also reliably limiting the positioning sleeve 44 and preventing the positioning sleeve 44 from accidentally coming off.
[0044] In this embodiment, the locking pin 3 includes a first pin portion 31 and a second pin portion 32 arranged in a stepped manner. The diameter of the first pin portion 31 is larger than the diameter of the second pin portion 32. The second pin portion 32 passes through the second locking hole 211 and the first locking hole 111 in sequence and is then fixedly connected to the third locking hole 221. The first pin portion 31 passes through the second locking hole 211 and is supported on the first frame 1. Specifically, during the insertion of the locking pin 3, the second pin portion 32 gradually extends into the first locking hole 111. During this process, the outer periphery of the second pin portion 32 will come into contact with multiple top pins 42. Under the elastic force of their respective corresponding elastic elements 43, the multiple top pins 42 jointly abut against the outer peripheral wall of the second pin portion 32, thereby continuously correcting the axial position of the locking pin 3 during the insertion of the second pin portion 32, so that the axis of the second pin portion 32 coincides with the axis of the first locking hole 111, and preventing the locking pin 3 from shaking randomly during the insertion process. Understandably, as the second pin 32 gradually extends into the first lock hole 111, the first pin 31 obviously does not engage with the second lock hole 211. Therefore, the lack of contact between the first pin 31 and the second lock hole 211 makes the second pin 32 more likely to wobble relative to the first lock hole 111. Thus, the setting of the positioning force-applying component 4 is also very necessary.
[0045] Specifically, the positioning sleeve 44 is set on the second pin 32.
[0046] Specifically, the second pin 32 has an external thread on its outer periphery at the end opposite to the first pin 31, and the inner peripheral wall of the third locking hole 221 has a corresponding internal thread. The second pin 32 is threadedly connected to the third locking hole 221. Specifically, the second pin 32 passes through the second locking hole 211 and the first locking hole 111 in a vertical direction and then is threadedly connected to the third locking hole 221, ensuring that the locking pin 3 can be reliably and stably fixed to the frame assembly.
[0047] Specifically, the end of the second pin 32 facing away from the first pin 31 is provided with a guide chamfer 321. The guide chamfer 321 provides a certain guiding effect during the insertion of the second pin 32 into the second lock hole 211, the first lock hole 111, and the third lock hole 221. Even if the second pin 32 is not perfectly aligned, the guide chamfer 321 can guide the second pin 32 smoothly into the second lock hole 211, the first lock hole 111, and the third lock hole 221.
[0048] This embodiment also provides a piece of construction machinery. The construction machinery includes the aforementioned frame assembly and a vehicle body, which is mounted on the frame assembly. In this embodiment, the construction machinery includes the aforementioned frame assembly. By providing a positioning force-applying component 4, it can effectively position the locking pin 3 after insertion, preventing the locking pin 3 from shaking randomly during insertion and ensuring reliable locking between the first frame 1 and the second frame 2.
[0049] For example, the types of construction machinery include, but are not limited to, loaders.
[0050] For example, the first frame 1 corresponds to the front frame of the loader, and the second frame 2 corresponds to the rear frame of the loader.
[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A vehicle frame assembly, characterized in that, include: The first frame (1) has a first lock hole (111); The second frame (2) is hinged to the first frame (1). The second frame (2) is provided with an upper locking part (21) and a lower locking part (22) at intervals along the vertical direction. The upper locking part (21) has a second locking hole (211), and the lower locking part (22) has a third locking hole (221). The first frame (1) is located between the upper locking part (21) and the lower locking part (22). The locking pin (3) can pass through the second locking hole (211) and the first locking hole (111) in the vertical direction and then be fixedly connected to the third locking hole (221) to lock the first frame (1) and the second frame (2). The positioning force-applying component (4) is used to apply a positioning force to the locking pin (3) passing through the first lock hole (111), so that the axis of the locking pin (3) coincides with the axis of the first lock hole (111).
2. The frame assembly according to claim 1, characterized in that, The positioning force-applying component (4) includes a mounting base (41), a top pin (42), and an elastic element (43). The mounting base (41) is fixedly sleeved in the first locking hole (111). The side wall of the mounting base (41) is provided with a plurality of receiving grooves (411) spaced apart along the circumference. Each receiving groove (411) is provided with the top pin (42). The elastic element (43) is provided between the top pin (42) and the bottom of the receiving groove (411). The elastic element (43) is used to provide a force that forces the top pin (42) to extend out of the receiving groove (411), so that the plurality of top pins (42) together press against the outer periphery of the locking pin (3).
3. The frame assembly according to claim 2, characterized in that, The positioning force application component (4) also includes a positioning sleeve (44) sleeved on the locking pin (3). The positioning sleeve (44) has a positioning ring groove (441), and multiple top pins (42) can extend into and abut against the positioning ring groove (441).
4. The frame assembly according to claim 2, characterized in that, The upper end of the mounting base (41) is bent to provide a connecting eave (412), which is supported on the outer edge of the first lock hole (111).
5. The frame assembly according to claim 4, characterized in that, The connecting eaves (412) has a through hole (4121), and the first frame (1) has a corresponding threaded hole (112). The fastening screw (11) passes through the through hole (4121) and is threadedly connected to the threaded hole (112).
6. The frame assembly according to claim 1, characterized in that, The locking pin (3) includes a first pin (31) and a second pin (32) arranged in a stepped manner. The diameter of the first pin (31) is larger than the diameter of the second pin (32). The second pin (32) passes through the second locking hole (211) and the first locking hole (111) in sequence and is fixedly connected to the third locking hole (221). The first pin (31) passes through the second locking hole (211) and is supported on the first frame (1).
7. The frame assembly according to claim 6, characterized in that, The second pin (32) has an external thread on the outer periphery of one end facing away from the first pin (31), and the inner wall of the third locking hole (221) has an internal thread. The second pin (32) is threadedly connected to the third locking hole (221).
8. The frame assembly according to claim 6, characterized in that, The second pin (32) has a guide chamfer (321) at one end facing away from the first pin (31).
9. The frame assembly according to claim 2, characterized in that, The elastic element (43) is a spring, with one end of the spring abutting the bottom of the receiving groove (411) and the other end abutting the top pin (42).
10. An engineering machinery, characterized in that, The vehicle assembly includes the frame assembly as described in any one of claims 1-9, and further includes a vehicle body disposed on the frame assembly.