Locking mechanism and engineering machine
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY CO LTD
- Filing Date
- 2025-09-04
- Publication Date
- 2026-08-07
AI Technical Summary
[0003]本实用新型的目的是提供一种锁定机构和工程机械，解决现有技术中支腿锁定自动化程度低的技术问题
本申请的锁定机构用于锁定伸缩组件，伸缩组件包括依次滑动嵌套设置的至少三个伸缩件，锁定机构包括挡板组件和限位组件，挡板组件可旋转地设置于位于中间的伸缩件上，限位组件包括对应挡板组件设置的第一限位件和第二限位件从，位于两侧的伸缩件的相对面分别设置有第一限位件和第二限位件，多个伸缩件在伸缩滑动的过程中能够带动挡板组件旋转，以使得第一限位件和第二限位件与挡板组件锁紧或解锁。本实施例中通过在伸缩件上设置挡板组件和限位组件，在伸缩件缩回到位后，第一限位件和第二限位件配合实现对挡板组件的限位，进而实现多个伸缩件之间的自动锁紧，而伴随伸缩件的伸出，多个伸缩件之间也能够自动解除锁定，由此可见，本实施例的锁定机构自动化程度高，解决了现有技术中支腿锁定自动化程度低的技术问题。
Smart Images
Figure CN224602875U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of engineering machinery technology, specifically relating to a locking mechanism and engineering machinery. Background Technology
[0002] For concrete pump trucks, the front outriggers are one of the most critical components, and their safe operation is crucial to the overall safe operation of the pump truck. When the pump truck is in motion, because the front outriggers are movable parts, if they are not effectively locked when the pump truck encounters curves or bumpy roads, they may slide out along the outrigger housing, endangering safety and causing unnecessary losses. Therefore, it is essential to ensure that the front outriggers are stably locked during pump truck operation. Currently, the existing outrigger locks are manual mechanisms. When the concrete pump truck is preparing to deliver material and needs to extend the front outriggers, the lock must be manually opened to allow them to extend. After use, they must be manually locked again. This manual operation is time-consuming and complex, with low automation. Utility Model Content
[0003] The purpose of this invention is to provide a locking mechanism and engineering machinery to solve the technical problem of low automation in outrigger locking in the prior art.
[0004] To achieve the above objectives, this utility model provides a locking mechanism for locking a telescopic assembly, the telescopic assembly comprising at least three telescopic members that are sequentially slidably nested, and the locking mechanism comprising: A baffle assembly is rotatably mounted on the telescopic member located in the middle; The limiting component includes a first limiting member and a second limiting member corresponding to the baffle assembly. The opposite surfaces of the telescopic members on both sides are respectively provided with the first limiting member and the second limiting member. During the telescopic sliding process, the multiple telescopic members can drive the baffle assembly to rotate so that the first limiting member and the second limiting member can lock or unlock with the baffle assembly.
[0005] In an embodiment of this utility model, there are three telescopic components, which are nested as a first telescopic component, a second telescopic component, and a third telescopic component. The second telescopic component has a first mounting opening, and the inner wall of the first mounting opening has a insertion hole. A baffle assembly is placed inside the first mounting opening, and the baffle assembly includes: The stop block extends through the first installation opening. A rotating shaft passes through the stop block and is inserted into the insertion hole. The stop block can rotate around the rotating shaft so that the two sides of the stop block are locked or unlocked with the first and second limiting members.
[0006] In an embodiment of this utility model, the stop block has an L-shaped structure and includes an integrally connected body and a protrusion. The body is adapted to the shape of the first mounting opening, and the protrusion extends toward one side of the first telescopic member.
[0007] In an embodiment of this utility model, a second mounting opening is provided on the stop block, and the locking mechanism further includes a reset member disposed in the second mounting opening. The reset member is sleeved on the rotating shaft. A first limiting stop block is provided on the inner wall of the first mounting opening, and a second limiting stop block is provided on the inner wall of the second mounting opening. The two ends of the reset member along the length direction respectively abut against the first limiting stop block and the second limiting stop block and can drive the stop block to automatically reset under the restoring force.
[0008] In an embodiment of this utility model, the stop block is also provided with an avoidance notch, which communicates with the second mounting opening and can avoid the first limiting stop block.
[0009] In an embodiment of this utility model, an arc-shaped abutment surface extending along the length direction of the first telescopic member is formed on the first limiting member. During the process of the first telescopic member sliding relative to the second telescopic member, the arc-shaped abutment surface applies a pushing force to the protrusion, so that the main body swings from the first mounting opening toward the second limiting member, and the protrusion swings to the position where it abuts and is limited by the arc-shaped abutment surface.
[0010] In an embodiment of this utility model, the second limiting member includes a latch body and a locking shaft disposed on the latch body. The locking shaft passes through the third telescopic member and extends toward the second telescopic member. A clearance is left between the locking shaft and the second telescopic member. When the main body swings from the first mounting opening toward the second limiting member, the locking shaft limits one side of the main body.
[0011] In an embodiment of this utility model, the second limiting member further includes fasteners. The locking tongue body has multiple first mounting holes, and the fasteners are multiple and are set one-to-one with the first mounting holes. The fasteners can lock the locking tongue body onto the third telescopic member.
[0012] In an embodiment of this utility model, a mounting platform is provided on the side of the third telescopic member opposite to the second telescopic member. The mounting platform is provided with a plurality of second mounting holes that correspond one-to-one with the first mounting holes. Fasteners can lock the locking tongue body onto the mounting platform.
[0013] In an embodiment of this utility model, an engineering machine is also proposed, including the locking mechanism described above.
[0014] Through the above technical solutions, the locking mechanism and engineering machinery provided by the embodiments of this utility model have the following beneficial effects: The locking mechanism of this application is used to lock a telescopic assembly, which includes at least three telescopic members arranged in a sequentially slidable and nested manner. The locking mechanism includes a baffle assembly and a limiting assembly. The baffle assembly is rotatably mounted on the telescopic member located in the middle. The limiting assembly includes a first limiting member and a second limiting member corresponding to the baffle assembly. The opposite surfaces of the telescopic members located on both sides are respectively provided with the first limiting member and the second limiting member. During the telescopic sliding process, the multiple telescopic members can drive the baffle assembly to rotate, so that the first limiting member and the second limiting member lock or unlock with the baffle assembly. In this embodiment, by setting the baffle assembly and the limiting assembly on the telescopic members, after the telescopic members are retracted into place, the first limiting member and the second limiting member cooperate to limit the baffle assembly, thereby realizing automatic locking between the multiple telescopic members. As the telescopic members extend, the multiple telescopic members can also automatically unlock. It can be seen that the locking mechanism of this embodiment has a high degree of automation, solving the technical problem of low automation of outrigger locking in the prior art.
[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description
[0016] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a structural diagram showing the multiple telescopic components in a locked state according to this utility model; Figure 2 This is a schematic diagram of the structure of multiple telescopic components in the present invention in an unlocked state; Figure 3 This is a structural schematic diagram of the stop block from one perspective according to this utility model; Figure 4 This is a schematic diagram of the resetting component according to the present invention; Figure 5 This is a structural schematic diagram of the first telescopic component according to this utility model; Figure 6 This is a structural schematic diagram of the second telescopic component according to this utility model; Figure 7 This is a structural schematic diagram of the third telescopic component according to this utility model; Figure 8 This is a structural schematic diagram of the second telescopic component baffle assembly according to this utility model; Figure 9This is a structural schematic diagram of the second limiting member according to this utility model; Figure 10 This is a structural schematic diagram of the stop block from another perspective according to this utility model.
[0017] Explanation of reference numerals in the attached figures Detailed Implementation
[0018] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0019] The locking mechanism and engineering machinery according to the present invention are described below with reference to the accompanying drawings.
[0020] like Figure 1 As shown, in this embodiment, the locking mechanism of this application is used to lock the telescopic component. The telescopic component includes at least three telescopic members that are slidably nested together. The locking mechanism includes a baffle assembly 1 and a limiting assembly. The baffle assembly 1 is rotatably disposed on the telescopic member located in the middle. The limiting assembly includes a first limiting member 21 and a second limiting member 22 disposed corresponding to the baffle assembly 1. The opposite surfaces of the telescopic members located on both sides are respectively provided with the first limiting member 21 and the second limiting member 22. During the telescopic sliding process, the multiple telescopic members can drive the baffle assembly 1 to rotate, so that the first limiting member 21 and the second limiting member 22 are locked or unlocked with the baffle assembly 1.
[0021] In this embodiment, by setting a baffle assembly 1 and a limiting assembly on the telescopic member, after the telescopic member retracts into place, the first limiting member 21 and the second limiting member 22 cooperate to limit the baffle assembly 1, thereby realizing automatic locking between multiple telescopic members. As the telescopic member extends, the multiple telescopic members can also be automatically unlocked. It can be seen that the locking mechanism of this embodiment has a high degree of automation, which solves the technical problem of low automation of outrigger locking in the prior art.
[0022] like Figure 1As shown, in this embodiment, there are three telescopic components, which are nested: a first telescopic component 10, a second telescopic component 20, and a third telescopic component 30. The second telescopic component 20 has a first mounting opening 201, and an insertion hole 203 is provided on the inner wall of the first mounting opening 201. A baffle assembly 1 is placed inside the first mounting opening 201. The baffle assembly 1 includes a stop block 11 and a rotating shaft 12. The stop block 11 passes through the first mounting opening 201, and the rotating shaft passes through the stop block 11 and is inserted into the insertion hole 203. The stop block 11 can rotate around the rotating shaft 12 so that the two sides of the stop block 11 are locked or unlocked with the first limiting member 21 and the second limiting member 22. To address the technical problems in this application, the first telescopic component 10, the second telescopic component 20, and the third telescopic component 30 can be in the form of outriggers. The locking mechanism of this application can also be applied to other similar structures.
[0023] Specifically, the third telescopic component 30 is mounted on the chassis, and the first telescopic component 10 and the second telescopic component 20 are respectively connected to driving components. The driving components are used to drive the first telescopic component 10 and the second telescopic component 20 to slide along the length direction. The driving components can be structures such as telescopic hydraulic cylinders.
[0024] When multiple telescopic components need to be locked together, firstly, the second telescopic component 20 is retracted by the drive component. After the second telescopic component 20 is retracted into place, the first telescopic component 10 is retracted. When the first limiting component 21 is not in contact with the stop block 11, the stop block 11 is in the position as follows: Figure 2 The state shown; as the first telescopic member 10 continues to retract and the first limiting member 21 contacts the stop block 11, under the action of the rotational driving force applied by the first limiting member 21, the stop block 11 will rotate around the rotation axis 12. When the first telescopic member 10 retracts to its position, the first limiting member 21 abuts against the stop block 11, and the stop block 11 will abut against the second limiting member 22, as shown. Figure 1 As shown, this achieves automatic locking between multiple telescopic components, with a high degree of automation, requiring no manual operation and saving labor costs.
[0025] When unlocking is required between multiple telescopic components, the first telescopic component 10 is driven to extend first. As the first telescopic component 10 extends, the first limiting component 21 will no longer contact the stop block 11. The limiting between the first telescopic component 10 and the second telescopic component 20 is released, and the second telescopic component 20 can slide out under the drive of the driving component until the second telescopic component 20 extends into place.
[0026] like Figure 3 and Figure 8As shown, in this embodiment, the stop block 11 has an L-shaped structure and includes an integrally connected body part 111 and a protrusion 112, resulting in high structural strength. The body part 111 is shaped to match the first mounting opening 201, and the protrusion 112 extends towards the side of the first telescopic member 10. When the second telescopic member 20 retracts to its position, the first telescopic member 10 retracts, causing the first limiting member 21 to contact the protrusion 112. The protrusion 112, driven by the rotational force applied by the first limiting member 21, causes the body part 111 to rotate around the rotation axis 12. When the first telescopic member 10 retracts to its position, the first limiting member 21 abuts against the protrusion 112, and the body part 111 abuts against the second limiting member 22, achieving automatic locking between multiple telescopic members. This high degree of automation eliminates the need for manual operation, saving labor costs.
[0027] like Figure 3 , Figure 4 and Figure 10 As shown, in this embodiment, the stop 11 is provided with a second mounting opening 113, and the locking mechanism also includes a reset member 3 provided in the second mounting opening 113. The reset member 3 is sleeved on the rotating shaft 12. The inner wall of the first mounting opening 201 is provided with a first limiting stop 202, and the inner wall of the second mounting opening 113 is provided with a second limiting stop 114. The two ends of the reset member 3 along the length direction respectively abut against the first limiting stop 202 and the second limiting stop 114 and can drive the stop 11 to automatically reset under the restoring force.
[0028] The reset element 3 can be a spring as used in the prior art. Since both ends of the reset element 3 are limited by the first limiting block 202 and the second limiting block 114 respectively, when unlocking is required between multiple telescopic elements, the first telescopic element 10 needs to be extended first. As the first telescopic element 10 extends, the first limiting element 21 will no longer contact the block 11, and the limitation between the first telescopic element 10 and the second telescopic element 20 will be released. Under the restoring force of the reset element 3, the block 11 will return to its original position. Figure 2 As shown in the diagram, the second telescopic member 20 can slide out under the drive of the driving member.
[0029] like Figure 3 As shown, in this embodiment, the stop block 11 is also provided with a clearance notch 115, which communicates with the second mounting opening 113 and can avoid the first limiting stop block 202. Since the stop block 11 rotates around the rotation axis 12, the clearance notch 115 can effectively avoid the first limiting stop block 202, preventing the first limiting stop block 202 from interfering with the normal rotation of the stop block 11 around the rotation axis 12.
[0030] like Figure 1 and Figure 5As shown, in this embodiment, the first limiting member 21 has an arc-shaped abutment surface extending along the length of the first telescopic member 10, which avoids collision damage caused by hard contact between the first limiting member 21 and the baffle. During the telescopic sliding of the first telescopic member 10 relative to the second telescopic member 20, the arc-shaped abutment surface applies a pushing force to the protrusion 112, causing the main body 111 to swing from the first mounting opening 201 toward the second limiting member 22, and the protrusion 112 to swing to a position where it abuts and is limited by the arc-shaped abutment surface, thereby achieving the limiting and locking between multiple telescopic members. The locking mechanism in this application has a simple structure and low manufacturing precision, thus effectively reducing production costs.
[0031] like Figure 3 and Figure 6 As shown, in this embodiment, the second limiting member 22 includes a latch body 222 and a locking shaft 221 disposed on the latch body 222. The locking shaft 221 passes through the third telescopic member 30 and extends toward the second telescopic member 20. A clearance is left between the locking shaft 221 and the second telescopic member 20 to avoid interfering with the normal sliding of the second telescopic member 20. When the body part 111 swings from the first mounting opening 201 toward the second limiting member 22, the locking shaft 221 limits one side of the body part 111 to prevent the second telescopic member 20 from sliding relative to the third telescopic member 30.
[0032] like Figure 9 As shown, in this embodiment, the second limiting member 22 further includes fasteners 223. The latch body 222 has multiple first mounting holes, and the fasteners 223 are multiple and correspond one-to-one with the first mounting holes. The fasteners 223 can lock the latch body 222 onto the third telescopic member 30. The fasteners 223 can be bolts as used in the prior art, which, together with nuts, can securely lock the latch body 222 onto the third telescopic member 30.
[0033] like Figure 7 and Figure 9 As shown, in this embodiment, a mounting platform 301 is provided on the side of the third telescopic member 30 facing away from the second telescopic member 20. The mounting platform 301 has multiple second mounting holes 302, each corresponding to a first mounting hole. Fasteners 223 can lock the latch body 222 onto the mounting platform 301. The mounting platform 301 also has an insertion hole for the locking shaft 221 to pass through. The mounting platform 301 assists in assembly, ensuring that the second limiting member 22 can be stably installed on the third telescopic member 30. Specifically, in this application, there are four first mounting holes and four second mounting holes 302, ensuring that the latch body 222 can be stably installed on the mounting platform 301. The number of first mounting holes and four second mounting holes 302 can be adjusted according to actual needs.
[0034] In this embodiment, an engineering machine is also proposed, including the locking mechanism described above. Since the engineering machine adopts all embodiments of the locking mechanism in this application, it also has all the beneficial effects of the locking mechanism, which will not be described in detail here.
[0035] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A locking mechanism for locking a telescopic assembly, the telescopic assembly comprising at least three telescopic members that are sequentially slidably nested, characterized in that, The locking mechanism includes: A baffle assembly (1) is rotatably disposed on the telescopic member located in the middle; The limiting component includes a first limiting member (21) and a second limiting member (22) corresponding to the baffle assembly (1). The first limiting member (21) and the second limiting member (22) are respectively provided on the opposite surfaces of the telescopic members located on both sides. During the telescopic sliding process, the multiple telescopic members can drive the baffle assembly (1) to rotate so that the first limiting member (21) and the second limiting member (22) are locked or unlocked with the baffle assembly (1).
2. The locking mechanism according to claim 1, characterized in that, The telescopic components are three in number and are nested as a first telescopic component (10), a second telescopic component (20), and a third telescopic component (30). The second telescopic component (20) has a first mounting opening (201), and the inner wall of the first mounting opening (201) has a insertion hole (203). The baffle assembly (1) is placed inside the first mounting opening (201), and the baffle assembly (1) includes: A stop block (11) is provided through the first mounting opening (201); A rotating shaft (12) passes through the stop (11) and is inserted into the insertion hole (203). The stop (11) can rotate around the rotating shaft (12) so that the two sides of the stop (11) are locked or unlocked with the first limiting member (21) and the second limiting member (22).
3. The locking mechanism according to claim 2, characterized in that, The stop block (11) has an L-shaped structure and includes an integrally connected body part (111) and a protrusion part (112). The body part (111) is adapted to the shape of the first mounting opening (201), and the protrusion part (112) extends toward one side of the first telescopic member (10).
4. The locking mechanism according to claim 2, characterized in that, The stop (11) is provided with a second mounting opening (113). The locking mechanism also includes a reset member (3) provided in the second mounting opening (113). The reset member (3) is sleeved on the rotating shaft (12). The inner wall of the first mounting opening (201) is provided with a first limiting block (202). The inner wall of the second mounting opening (113) is provided with a second limiting block (114). The reset member (3) abuts against the first limiting block (202) and the second limiting block (114) at both ends along the length direction and can drive the stop (11) to automatically reset under the restoring force.
5. The locking mechanism according to claim 4, characterized in that, The stop block (11) is also provided with an avoidance notch (115), which is connected to the second installation opening (113) and can avoid the first limiting stop block (202).
6. The locking mechanism according to claim 3, characterized in that, The first limiting member (21) has an arc-shaped abutment surface extending along the length direction of the first telescopic member (10). During the process of the first telescopic member (10) sliding relative to the second telescopic member (20), the arc-shaped abutment surface applies a pushing force to the protrusion (112) so that the body part (111) swings from the first mounting opening (201) toward the second limiting member (22), and the protrusion (112) swings to a position that abuts and limits with the arc-shaped abutment surface.
7. The locking mechanism according to claim 3, characterized in that, The second limiting member (22) includes a latch body (222) and a locking shaft (221) disposed on the latch body (222). The locking shaft (221) passes through the third telescopic member (30) and extends toward the second telescopic member (20). There is a clearance between the locking shaft (221) and the second telescopic member (20). When the body part (111) swings from the first mounting opening (201) toward the second limiting member (22), the locking shaft (221) limits one side of the body part (111).
8. The locking mechanism according to claim 7, characterized in that, The second limiting member (22) also includes a fastener (223). The locking tongue body (222) has multiple first mounting holes. The fastener (223) is multiple and is set one by one to the first mounting holes. The fastener (223) can lock the locking tongue body (222) onto the third telescopic member (30).
9. The locking mechanism according to claim 8, characterized in that, The third telescopic member (30) has a mounting platform (301) on the side opposite to the second telescopic member (20). The mounting platform (301) has a plurality of second mounting holes (302) that correspond one-to-one with the first mounting holes. The fastener (223) can lock the locking tongue body (222) onto the mounting platform (301).
10. An engineering machinery, characterized in that, Includes the locking mechanism according to any one of claims 1 to 9.