Electrically driven cylinder arm pin telescoping mechanism and oil cylinder comprising same

Abstract

The utility model discloses an electric drive cylinder arm pin telescoping mechanism and an oil cylinder comprising the same, the electric drive cylinder arm pin telescoping mechanism comprises a cylinder head block, the cylinder head block is located at the end of a cylinder body, two cylinder pins are arranged in the cylinder head block, and the upper end face of the cylinder head block is provided with a dovetail groove; the sliding seat is arranged on the upper end face of the cylinder head block, the sliding seat is movably connected with the dovetail groove, and the sliding seat is movably connected with the cylinder pin; the electric cylinder is arranged on the cylinder body, and the electric cylinder is connected with the sliding seat and used for driving the sliding seat to reciprocate in the x direction; the controller is arranged on the cylinder body, and the controller is connected with the electric cylinder. The electric cylinder is adopted to drive the sliding seat to move, so that the telescopic action of the cylinder pin and the dovetail groove is achieved, and accurate control over the moving stroke of the electric cylinder is achieved through the controller. Compared with the prior art, the utility model has the advantages that the structure is simpler, the control mode is more accurate, and the response speed is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinders, in particular to an electrically driven cylinder arm pin telescopic mechanism and an oil cylinder comprising the same. Background Art

[0002] A single-cylinder pin-type crane realizes the telescopic function of the telescopic boom through the combined actions of a telescopic oil cylinder, arm pins and cylinder pins. A single-cylinder pin system is a device built into the boom of a crane to assist the telescopic oil cylinder in realizing the telescopic function of the crane boom. A cylinder head block is a device used to control the fixation and separation between the telescopic oil cylinder and the telescopic boom, mainly including arm pins and cylinder pins. The function of the cylinder pin is to lock the telescopic oil cylinder and the telescopic boom together, and the function of the arm pin is to lock each section of the telescopic boom together.

[0003] Currently, the driving structure of the cylinder arm pins mainly uses a hydraulic oil cylinder for driving. After the detection switch detects a signal, it feeds back to the electronic compartment. After receiving the signal, the electronic compartment feeds back to the control valve block, and the control valve block controls the telescopic action of the oil cylinder, thereby pushing the slide plate to realize the telescopic actions of the cylinder pin and the arm pin. For the existing driving method, a large number of components are used, and an additional hydraulic oil circuit needs to be introduced for the operation of the hydraulic oil cylinder, resulting in a relatively complex internal structure of the telescopic oil cylinder and a slow response speed. Summary of the Utility Model

[0004] In order to solve the technical problems existing in the prior art, the utility model provides an electrically driven cylinder arm pin telescopic mechanism and an oil cylinder comprising the same, which adopt an electrically driven method to realize the telescopic actions of the cylinder pin and the arm pin, which is beneficial to simplifying the internal structure of the oil cylinder and improving the response speed and response accuracy.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an electrically driven cylinder arm pin telescopic mechanism, comprising: a cylinder head block located at the end of the cylinder body, with two cylinder pins arranged inside the cylinder head block, and a dovetail groove provided on the upper end surface of the cylinder head block; a sliding seat arranged on the upper end surface of the cylinder head block, movably connected between the sliding seat and the dovetail groove, and movably connected between the sliding seat and the cylinder pins; an electric cylinder arranged on the cylinder body, connected to the sliding seat to drive the sliding seat to reciprocate along the x direction; a controller arranged on the cylinder body, connected to the electric cylinder.

[0006] Further, the sliding seat includes: a bottom plate, a first connecting plate, two second connecting plates and two third connecting plates. The first connecting plate, the second connecting plates and the third connecting plates are all connected to the bottom plate. The first connecting plate is connected to the electric cylinder, the two second connecting plates are connected to both sides of the dovetail groove, and the third connecting plates are connected to the cylinder pins.

[0007] Further, a first guiding hole is formed in the second connecting plate, a support is provided on the cylinder head block, a second guiding hole is formed in the support, the second guiding hole is arranged along the z direction, and a first sliding shaft penetrates through the side wall of the dovetail groove, the second guiding hole, and the first guiding hole to connect the dovetail groove, the support, and the second connecting plate.

[0008] Further, the first guiding hole is composed of a first horizontal section and a first inclined section.

[0009] Further, a third guiding hole is formed in the third connecting plate, a first connecting hole is formed in the cylinder pin, one end of a second sliding shaft is connected to the first connecting hole, and the other end penetrates through the third guiding hole.

[0010] Further, the third guiding hole is composed of a second horizontal section, a second inclined section, and a third horizontal section.

[0011] Further, a fitting groove is formed in the upper end surface of the cylinder head block, and the third connecting plate is installed in the fitting groove.

[0012] Further, the length of the fitting groove is greater than the length of the third connecting plate.

[0013] The present utility model further provides an oil cylinder, including: a cylinder body and an electrically driven cylinder arm pin telescopic mechanism.

[0014] Further, a detection guiding assembly is further provided on the cylinder head block.

[0015] The beneficial effects of the present utility model are that the electrically driven cylinder arm pin telescopic mechanism of the present utility model and the oil cylinder including the same use an electric cylinder to drive the movement of the sliding seat, so as to realize the telescopic actions of the cylinder pin and the dovetail groove, and the precise control of the moving stroke of the electric cylinder is realized through the controller. Compared with the prior art, the structure of the present utility model is simpler, the control method is more precise, and the response speed is faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present utility model will be further described below with reference to the drawings and embodiments.

[0017] Figure 1 is a three-dimensional schematic diagram of the electrically driven cylinder arm pin telescopic mechanism of the present utility model.

[0018] Figure 2 is a structural schematic diagram of the cylinder head block and the sliding seat of the present utility model.

[0019] Figure 3 is a structural schematic diagram of the sliding seat of the present utility model.

[0020] Figure 4 is a structural schematic diagram of the sliding shaft of the present utility model.

[0021] Figure 5 It is a schematic structural diagram of the cylinder head block of the present utility model.

[0022] Figure 6 It is a schematic structural diagram of the dovetail groove of the present utility model.

[0023] Figure 7 It is a schematic structural diagram of the cylinder pin of the present utility model.

[0024] Figure 8 It is a schematic diagram of the present utility model in the middle position function.

[0025] Figure 9 It is a schematic diagram of the present utility model in the fully extended function.

[0026] Figure 10 It is a schematic diagram of the present utility model in the fully retracted function.

[0027] In the figure: 1. Cylinder head block; 2. Sliding seat; 3. Electric cylinder; 4. Controller; 5. Support; 6. First sliding shaft; 7. Second sliding shaft; 231. First horizontal section; 232. First inclined section; 101. Cylinder pin; 102. Dovetail groove; 21. Bottom plate; 22. First connecting plate; 23. Second connecting plate; 24. Third connecting plate; 1011. First connecting hole; 241. Second horizontal section; 242. Second inclined section; 243. Third horizontal section; 103. Embedded groove; 1031. Fourth guiding hole; 200. Cylinder block; 300. Detection and guiding assembly; 301. Mounting plate; 302. Connecting column; 303. Guide plate. Detailed implementation manners

[0028] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] As Figures 1 to 7 shown, the electric-driven cylinder arm pin telescopic mechanism of the present utility model includes: a cylinder head block 1, a sliding seat 2, an electric cylinder 3, and a controller 4. The cylinder head block 1 is located at the end of the cylinder block 200. Two cylinder pins 101 are provided inside the cylinder head block 1. A dovetail groove 102 (serving as an arm pin) is provided on the upper end surface of the cylinder head block 1. The sliding seat 2 is arranged on the upper end surface of the cylinder head block 1. The sliding seat 2 is movably connected to the dovetail groove 102 and is movably connected to the cylinder pin 101. The electric cylinder 3 is arranged on the cylinder block 200 and is connected to the sliding seat 2 to drive the sliding seat 2 to reciprocate along the x direction; the controller 4 is arranged on the cylinder block 200 and is connected to the electric cylinder 3.

[0032] In other words, the present utility model omits the original detection switch and control valve block, uses the electric cylinder 3 to drive the movement of the sliding seat 2, thereby realizing the telescopic movement of the cylinder pin 101 and the dovetail groove 102, and realizes the precise control of the moving stroke of the electric cylinder 3 through the controller 4. Compared with the prior art, the structure of the present utility model is simpler, the control method is more precise, and the response speed is faster.

[0033] It should be noted that the cylinder pin 101 is arranged inside the cylinder head block 1 along the y direction. The telescopic movement of the cylinder pin 101 refers to the cylinder pin 101 retracting into the cylinder head block 1 or extending out of the cylinder head block 101, and the telescopic movement of the dovetail groove 102 refers to the up and down movement of the dovetail groove 102.

[0034] Specifically, the sliding seat 2 includes: a bottom plate 21, a first connecting plate 22, two second connecting plates 23, and two third connecting plates 24. The first connecting plate 22, the second connecting plates 23, and the third connecting plates 24 are all connected to the bottom plate 21. The first connecting plate 22 is connected to the electric cylinder 3. The two second connecting plates 23 are connected to both sides of the dovetail groove 102. The third connecting plate 24 is connected to the cylinder pin 101. The second connecting plate 23 is arranged perpendicular to the bottom plate 21. The two third connecting plates 24 are respectively connected to the left and right sides of the bottom plate 21. The height of the third connecting plate 24 is lower than that of the bottom plate 21. The dovetail groove 102 is located between the two second connecting plates 23.

[0035] For example, a first guiding hole is formed in the second connecting plate 23. A support 5 is provided on the cylinder head block 1. A second guiding hole is formed in the support 5. The second guiding hole is arranged along the z direction. The first sliding shaft 6 penetrates through the side wall of the dovetail groove 102, the second guiding hole, and the first guiding hole to connect the dovetail groove 102, the support 5, and the second connecting plate 23. The first guiding hole is composed of a first horizontal section 231 and a first inclined section 232. It should be noted that the electric cylinder 3 can only drive the sliding seat 2 to move along the x direction, while the dovetail groove 102 needs to move up and down, and can only move up and down and cannot move in the x direction. Therefore, the present utility model adopts the combination of the support 5 and the second connecting plate 23. The second guiding hole on the support 5 is arranged along the up and down direction. The first guiding hole on the second connecting plate 23 is composed of a first horizontal section 231 and a first inclined section 232, and the first horizontal section 231 is located in front of the first inclined section 232.

[0036] Assume that in the initial state, the first sliding shaft 6 is at the junction of the first horizontal section 231 and the first inclined section 232. When the electric cylinder 3 extends and drives the sliding seat 2 to move forward, since the support 5 is stationary, at this time, the first sliding shaft 6 slides down along the first inclined section 232 and the second guiding hole, and the dovetail groove 102 moves down. When the electric cylinder 3 retracts and drives the sliding seat 2 to move backward, the first sliding shaft 6 moves up along the first inclined section 232 and the second guiding hole, and the dovetail groove 102 moves up. When the first sliding shaft 6 enters the first horizontal section 231, the position of the dovetail groove 102 remains stationary.

[0037] For example, a third guiding hole is formed in the third connecting plate 24, and a first connecting hole 1011 is formed in the cylinder pin 101. One end of the second sliding shaft 7 is connected to the first connecting hole 1011, and the other end penetrates through the third guiding hole. The third guiding hole is composed of a second horizontal section 241, a second inclined section 242, and a third horizontal section 243. The second horizontal section 241 is located at the front end of the second inclined section 242, and the third horizontal section 243 is located at the rear end of the second inclined section 242. An embedding groove 103 is formed in the upper end surface of the cylinder head block 1, and the third connecting plate 24 is installed in the embedding groove 103. A fourth guiding hole 1031 is formed in the embedding groove 103, and the fourth guiding hole 1031 is arranged in the y direction. The second sliding shaft 7 penetrates through the fourth guiding hole 1031. The length of the embedding groove 103 is greater than the length of the third connecting plate 24, facilitating the front-back movement of the third connecting plate 24.

[0038] Assume that in the initial state, the second sliding shaft 7 is located at the junction of the second inclined section 242 and the third horizontal section 243. When the electric cylinder 3 drives the sliding seat 2 to move forward, the second sliding shaft 7 enters the third horizontal section 243. At this time, the cylinder pin 101 remains in the extended state. When the electric cylinder 3 drives the sliding seat 2 to move backward, the second sliding shaft 7 gradually enters the second inclined section 242 from the third horizontal section 243. When the second sliding shaft 7 moves in the second inclined section 242, the second sliding shaft 7 also moves along the fourth guiding hole 1031 at the same time, and the cylinder pin 101 retracts. When the second sliding shaft 7 enters the second horizontal section 241, the cylinder pin 101 remains in the retracted state without moving. That is, when the second sliding shaft 7 slides from the third horizontal section 243 to the second horizontal section 241, the cylinder pin 101 retracts. When the second sliding shaft 7 slides from the second horizontal section 241 to the third horizontal section 243, the cylinder pin 101 extends.

[0039] It should be noted that the position of the first inclined section 232 corresponds to the position of the third horizontal section 243, and the position of the first horizontal section 231 corresponds to the position of the second inclined section 242. As Figure 8 shown, when the sliding seat 2 is in the middle position function (at this time, the electric cylinder 3 is in the middle position, the first sliding shaft 6 is located at the junction of the first horizontal section 231 and the first inclined section 232, and the second sliding shaft 7 is located at the junction of the second inclined section 242 and the third horizontal section 243), both the cylinder pin 101 and the dovetail groove 102 are in the extended state. As Figure 9 shown, when the sliding seat 2 is in the fully extended function (at this time, the electric cylinder 3 is in the extended state, the first sliding shaft 6 is located at the lower end of the first inclined section 232, and the second sliding shaft 7 is located at the rear end of the third horizontal section 243), the dovetail groove 102 is in the retracted state, and the cylinder pin 101 is in the extended state. As Figure 10As shown, when the sliding seat 2 is in the fully retracted function state (at this time, the electric cylinder 3 is in the retracted state, the first sliding shaft 6 is located at the front end of the first horizontal section 231, and the second sliding shaft 7 is located at the second horizontal section 241), the dovetail groove 102 is in the extended state and the cylinder pin 101 is in the retracted state.

[0040] The present utility model also provides an oil cylinder, comprising: a cylinder body 200 and an electrically driven cylinder arm pin telescopic mechanism. Among them, a detection and guiding assembly 300 is further provided on the cylinder head block 1. As Figure 2 shown, the detection and guiding assembly 300 includes: a mounting plate 301, a connecting column 302, a guiding plate 303 and a sensor. The mounting plate 301 is fixed on the upper end surface of the cylinder head block 1. The guiding plate 303 is fixed to the mounting plate 301 through the connecting column 302, and the sensor is arranged on the guiding plate 303. Due to working conditions, when the whole oil cylinder moves inside the crane, the guiding plate 303 can play a role of guiding and supporting, and the sensor can be used to detect the position of the oil cylinder inside the crane.

[0041] It should be noted that when driven by the electric cylinder 3, the response time from the fully retracted function to the fully extended function is 1 s to 2 s, and the electric cylinder 3 is internally equipped with an emergency braking structure. When the electric cylinder 3 suddenly fails, the emergency braking structure can lock the electric cylinder 3 to prevent accidents.

[0042] In summary, for the electrically driven cylinder arm pin telescopic mechanism of the present utility model and the oil cylinder including the same, the electric cylinder 3 is used to drive the movement of the sliding seat 2, so as to realize the telescopic movements of the cylinder pin 101 and the dovetail groove 102, and the precise control of the moving stroke of the electric cylinder 3 is realized through the controller 4. Compared with the prior art, the structure of the present utility model is simpler, the control method is more precise, and the response speed is faster.

[0043] Taking the above-mentioned ideal embodiments of the present utility model as inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present utility model. The technical scope of the present utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An electric-driven cylinder arm pin telescopic mechanism, characterized in that, Comprising: A cylinder head block (1), the cylinder head block (1) is located at the end of a cylinder block (200), two cylinder pins (101) are arranged inside the cylinder head block (1), and a dovetail groove (102) is arranged on the upper end face of the cylinder head block (1); A sliding seat (2), the sliding seat (2) is arranged on the upper end face of the cylinder head block (1), the sliding seat (2) is movably connected with the dovetail groove (102), and the sliding seat (2) is movably connected with the cylinder pins (101); An electric cylinder (3), the electric cylinder (3) is arranged on the cylinder block (200), the electric cylinder (3) is connected with the sliding seat (2) for driving the sliding seat (2) to reciprocate along the x direction; A controller (4), the controller (4) is arranged on the cylinder block (200), and the controller (4) is connected with the electric cylinder (3).

2. The electrically driven cylinder arm pin telescopic mechanism according to claim 1, characterized in that, The sliding seat (2) includes: a bottom plate (21), a first connecting plate (22), two second connecting plates (23) and two third connecting plates (24), the first connecting plate (22), the second connecting plates (23) and the third connecting plates (24) are all connected with the bottom plate (21), the first connecting plate (22) is connected with the electric cylinder (3), the two second connecting plates (23) are connected with two sides of the dovetail groove (102), and the third connecting plates (24) are connected with the cylinder pins (101).

3. The electric drive cylinder arm pin telescopic mechanism according to claim 2, characterized in that, A first guiding hole is formed in the second connecting plate (23), a support (5) is arranged on the cylinder head block (1), a second guiding hole is formed in the support (5), the second guiding hole is arranged along the z direction, and a first sliding shaft (6) penetrates through the side wall of the dovetail groove (102), the second guiding hole and the first guiding hole to connect the dovetail groove (102), the support (5) and the second connecting plate (23).

4. The electrically driven cylinder arm pin telescopic mechanism according to claim 3, characterized in that, The first guiding hole is composed of a first horizontal section (231) and a first inclined section (232).

5. The electrically driven cylinder arm pin telescopic mechanism according to claim 2, characterized in that, A third guiding hole is formed in the third connecting plate (24), a first connecting hole (1011) is formed in the cylinder pin (101), one end of a second sliding shaft (7) is connected with the first connecting hole (1011), and the other end penetrates through the third guiding hole.

6. The electrically driven cylinder arm pin telescopic mechanism according to claim 5, characterized in that, The third guiding hole is composed of a second horizontal section (241), a second inclined section (242) and a third horizontal section (243).

7. The electrically driven cylinder arm pin telescopic mechanism according to claim 2, wherein, An embedding groove (103) is formed in the upper end face of the cylinder head block (1), and the third connecting plate (24) is installed in the embedding groove (103).

8. The electric drive cylinder arm pin telescopic mechanism according to claim 7, characterized in that, The length of the embedding groove (103) is greater than the length of the third connecting plate (24).

9. An oil cylinder, characterized in that, Comprising: A cylinder block (200) and an electrically driven cylinder arm pin telescopic mechanism as described in any one of claims 1-8.

10. The oil cylinder according to claim 9, characterized in that, A detection guiding assembly (300) is further arranged on the cylinder head block (1).

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