Plug pin module, telescopic arm assembly and engineering machinery

Abstract

The application provides a plug pin module, a telescopic arm assembly and an engineering machine, and relates to the technical field of engineering machines. The plug pin module comprises a base body, a cylinder pin, a linear telescopic mechanism, an arm pin plug structure, a cylinder pin plug transmission mechanism and an arm pin plug transmission mechanism; the cylinder pin plug transmission mechanism is in transmission connection with the linear telescopic mechanism and the cylinder pin; the arm pin plug transmission mechanism is in transmission connection with the linear telescopic mechanism and the arm pin plug structure; when the linear telescopic mechanism outputs linear motion in the first axial direction of the telescopic arm assembly, the cylinder pin plug transmission mechanism drives the cylinder pin to be ejected, and the arm pin plug transmission mechanism drives the arm pin plug structure to be retracted; when the linear telescopic mechanism outputs linear motion in the second axial direction of the telescopic arm assembly, the arm pin plug transmission mechanism drives the arm pin plug structure to be ejected, and the cylinder pin plug transmission mechanism drives the cylinder pin to be retracted, and the first axial direction and the second axial direction are opposite in direction. The overall structure of the application is simple, has high reliability and low maintenance cost.

Description

Technical Field

[0001] This application relates to the field of engineering machinery technology, specifically to a plug-in pin module, a telescopic boom assembly, and engineering machinery. Background Technology

[0002] Truck cranes with six or more boom sections generally use a single-cylinder pin mechanism to extend and retract the boom. Existing pin mechanisms typically use a hydraulic cylinder in conjunction with a spring to achieve the extension and retraction of the cylinder pin and boom pin. The cylinder pin and boom pin are linked by an interlocking mechanism. The interlocking method is that the boom pin cannot be pulled out to extend the boom when the cylinder pin is not extended, and the cylinder pin cannot be pulled out when the boom pin is not inserted.

[0003] However, in the existing pin-pulling mechanism, the pin-pulling action of the cylinder pin needs to be completed by the hydraulic cylinder, the pin-insertion action needs to be driven by the spring through reset, and the insertion and extraction of the arm pin needs to be performed by a separate hydraulic cylinder. Therefore, the internal linkage relationship of the pin-pulling mechanism is complicated, resulting in poor structural reliability. Sometimes the cylinder pin and arm pin cannot extend normally, the spring is prone to jamming, and the maintenance cost is also high. Utility Model Content

[0004] The purpose of this application is to provide a plug-in pin module, a telescopic arm assembly, and engineering machinery to solve the problems of existing pin-pulling mechanisms that require multiple hydraulic cylinders and spring reset, resulting in complex structure, poor reliability, and high maintenance costs.

[0005] To achieve the above objectives, the first aspect of this application provides a plug-in pin module applied to a telescopic boom assembly, the plug-in pin module comprising:

[0006] Matrix;

[0007] A cylinder pin is slidably disposed in the base body along a first radial direction of the telescopic arm assembly;

[0008] A linear telescopic mechanism is provided on the base;

[0009] An arm pin insertion and removal structure is slidably disposed on the base along the second radial direction of the telescopic arm assembly, and the arm pin insertion and removal structure is used to connect the corresponding arm pin in the telescopic arm assembly;

[0010] The cylinder pin insertion and removal transmission mechanism is a transmission connection between the linear telescopic mechanism and the cylinder pin; and

[0011] An arm pin insertion and removal transmission mechanism is used to drive the linear telescopic mechanism and the arm pin insertion and removal structure.

[0012] Specifically, when the linear telescopic mechanism outputs linear movement along the first axial direction of the telescopic arm assembly, the cylinder pin insertion and removal transmission mechanism drives the cylinder pin to extend, and the arm pin insertion and removal transmission mechanism drives the arm pin insertion and removal structure to retract; when the linear telescopic mechanism outputs linear movement along the second axial direction of the telescopic arm assembly, the arm pin insertion and removal transmission mechanism drives the arm pin insertion and removal structure to extend, and the cylinder pin insertion and removal transmission mechanism drives the cylinder pin to retract, wherein the first axial direction and the second axial direction are opposite in orientation.

[0013] As a further improvement to the above technical solution:

[0014] In one possible implementation, at least one cylinder pin is provided on each side of the base, and two sets of cylinder pin insertion and removal transmission mechanisms are provided. The two sets of cylinder pin insertion and removal transmission mechanisms are respectively connected to the corresponding cylinder pins, and both sets of cylinder pin insertion and removal transmission mechanisms are connected to the linear telescopic mechanism.

[0015] In one possible implementation, the cylinder pin insertion / removal transmission mechanism includes:

[0016] A first input rack is disposed on the linear telescopic mechanism and is connected to the linear telescopic mechanism in a transmission manner; the linear telescopic mechanism drives the first input rack to perform linear motion.

[0017] The first output rack is mounted on the cylinder pin; and

[0018] The first power reversing gear is rotatably mounted on the base and meshes with the first input rack and the first output rack respectively for transmission.

[0019] The axial direction of the first power reversing gear is perpendicular to the linear motion direction of the first input rack and the first radial direction, respectively.

[0020] In one possible implementation, the arm pin insertion / removal transmission mechanism includes:

[0021] The second input rack is disposed on the linear telescopic mechanism and is connected to the linear telescopic mechanism in a transmission manner; the linear telescopic mechanism drives the second input rack to perform linear motion.

[0022] The second output rack is slidably disposed on the base along the second radial direction and connected to the arm pin insertion structure; and

[0023] The second power reversing gear is rotatably mounted on the base and meshes with the second input rack and the second output rack respectively for transmission;

[0024] The axial direction of the second power reversing gear is perpendicular to the linear motion direction of the second input rack and the second radial direction, respectively.

[0025] In one possible implementation, a first coordinate system is established with the center of the first power reversing gear as the origin. In the first coordinate system, the second axial direction is defined as the positive X-axis direction, and the direction in which the cylinder pin is ejected is defined as the positive Y-axis direction. The first input rack meshes with the first power reversing gear on the side of the negative Y-axis direction, and the first output rack meshes with the first power reversing gear on the side of the negative X-axis direction.

[0026] A second coordinate system is established with the center of the second power reversing gear as the origin. In the second coordinate system, the second axial direction is defined as the positive X-axis direction, and the direction in which the arm pin insertion structure is pushed out is defined as the positive Z-axis direction. The second input rack meshes with the second power reversing gear on the side of the positive Z-axis direction, and the second output rack meshes with the second power reversing gear on the side of the negative X-axis direction; or, the second input rack meshes with the second power reversing gear on the side of the negative Z-axis direction, and the second output rack meshes with the second power reversing gear on the side of the positive X-axis direction.

[0027] In one possible implementation, the cylinder pin insertion / removal transmission mechanism includes:

[0028] A first reversing mechanism is disposed on the base, and the first reversing mechanism includes a first reversing bevel gear and a second reversing bevel gear that mesh with each other;

[0029] The first input lead screw assembly includes a first nut seat and a first lead screw body that is threadedly engaged with the first nut seat. A first reversing bevel gear is disposed on the first nut seat and can rotate with the first nut seat. The first lead screw body passes through the first nut seat and is connected to the linear telescopic mechanism, which drives the first lead screw body to perform linear motion.

[0030] The first lead screw assembly includes a second nut seat and a second lead screw body that is threadedly engaged with the second nut seat. The second reversing bevel gear is disposed on the second nut seat and can rotate with the second nut seat. The second lead screw body passes through the second nut seat and is connected to the cylinder pin.

[0031] The first lead screw body and the second lead screw body have different thread directions.

[0032] In one possible implementation, the arm pin insertion / removal transmission mechanism includes:

[0033] The second reversing mechanism is disposed on the base, and the second reversing mechanism includes a third reversing bevel gear and a fourth reversing bevel gear that mesh with each other;

[0034] The second input lead screw assembly includes a third nut seat and a third lead screw body that engages with a threaded pair of the third nut seat. A third reversing bevel gear is mounted on the third nut seat and rotates with it. The third lead screw body passes through the third nut seat and is connected to the linear telescopic mechanism for transmission. The linear telescopic mechanism drives the third lead screw body to perform linear motion.

[0035] The second lead screw assembly includes a fourth nut seat and a fourth lead screw body that is threadedly engaged with the fourth nut seat. The fourth reversing bevel gear is disposed on the fourth nut seat and can rotate with the fourth nut seat. The fourth lead screw body passes through the fourth nut seat and is connected to the arm pin insertion structure.

[0036] The threads of the third lead screw body and the fourth lead screw body are in the same direction.

[0037] In one possible implementation, the arm pin insertion and removal structure includes a dovetail groove seat, wherein the dovetail groove seat is provided with a dovetail slot into which the pin rod on the arm pin can be engaged.

[0038] The depth of the dovetail groove is greater than the thickness of the head of the pull pin.

[0039] In one possible implementation, the first radial direction is perpendicular to the second radial direction.

[0040] To achieve the above objectives, a second aspect of this application also provides a telescopic boom assembly, including multiple telescopic boom sections, a telescopic drive cylinder, and a plug-in pin module according to the first aspect, wherein the telescopic drive cylinder is arranged in the telescopic boom section located in the last section.

[0041] The piston rod of the telescopic drive cylinder is connected to the tail of the outermost telescopic arm section, and the plug-in pin module is mounted on the telescopic drive cylinder.

[0042] To achieve the above objectives, a third aspect of this application also provides an engineering machine, including the telescopic boom assembly provided in the second aspect.

[0043] Compared to existing technologies, the plug-in pin module, telescopic boom assembly, and construction machinery provided in this application have at least the following beneficial effects:

[0044] The plug-in / plug-out module provided in this application provides the necessary power for the cylinder pin plug-in / plug-out transmission mechanism and the arm pin plug-in / plug-out transmission mechanism through a linear telescopic mechanism. When the linear telescopic mechanism outputs linear motion along the first axial direction of the telescopic arm assembly, the cylinder pin plug-in / plug-out transmission mechanism drives the cylinder pin to extend, and the arm pin plug-in / plug-out transmission mechanism drives the arm pin plug-in / plug-out structure to retract. When the linear telescopic mechanism outputs linear motion along the second axial direction of the telescopic arm assembly, the arm pin plug-in / plug-out transmission mechanism drives the arm pin plug-in / plug-out structure to extend, and the cylinder pin plug-in / plug-out transmission mechanism drives the cylinder pin to retract. The first axial direction and the second axial direction are opposite in orientation. Thus, the plug-in / plug-out module provided in this application only requires one linear telescopic mechanism, which controls the plug-in / plug-out of the cylinder pin and arm pin, as well as the interlocking during the plug-in / plug-out process, through the corresponding cylinder pin plug-in / plug-out transmission mechanism and arm pin plug-in / plug-out transmission mechanism. Furthermore, it eliminates the need for a spring for the cylinder pin, thereby simplifying the overall structure, increasing reliability, and reducing maintenance costs.

[0045] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0046] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. 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:

[0047] Figure 1 A cross-sectional schematic diagram in the radial direction of a telescopic boom assembly provided in Embodiment 1 of this application is shown;

[0048] Figure 2 This shows a front view of a plug-in pin module provided in Embodiment 1 of this application;

[0049] Figure 3 It shows Figure 2 A top view of the structure of the plug-in pin module shown;

[0050] Figure 4 It shows Figure 2 A side view of the structure of the plug-in pin module shown;

[0051] Figure 5 The diagram shows the operation of the linear telescopic mechanism outputting linear motion along the second axis direction in a plug-in pin module provided in Embodiment 1 of this application, which is a schematic diagram of the operation of the cylinder pin plug-in transmission mechanism (a) and the arm pin plug-in transmission mechanism (b).

[0052] Figure 6 This paper shows a schematic diagram of the structure of a first input rack in the plug-in pin module provided in Embodiment 1 of this application;

[0053] Figure 7 This paper shows a schematic diagram of the structure of a second input rack in the plug-in pin module provided in Embodiment 1 of this application;

[0054] Figure 8 The diagram shows the operation of the linear telescopic mechanism outputting linear motion along the second axis direction in another plug-in pin module provided in Embodiment 2 of this application, which is a schematic diagram of the operation of the cylinder pin plug-in transmission mechanism (a) and the arm pin plug-in transmission mechanism (b).

[0055] Figure 9 This paper shows a schematic diagram of the structure of a cylinder pin insertion and removal transmission mechanism in the insertion and removal pin module provided in Embodiment 3 of this application;

[0056] Figure 10 A schematic diagram of the structure of an arm pin insertion and removal transmission mechanism in the insertion and removal pin module provided in Embodiment 3 of this application is shown.

[0057] Explanation of reference numerals in the attached figures:

[0058] 100. Insertion and removal pin module; 110. Base; 120. Cylinder pin; 130. Linear telescopic mechanism; 140. Arm pin insertion and removal structure; 141. Dovetail slot seat; 142. Dovetail groove; 150. Cylinder pin insertion and removal transmission mechanism; 151. First input rack; 1510. Rack section; 152. First output rack; 153. First power reversing gear; 154. First reversing mechanism; 1540. First reversing bevel gear; 1541. Second reversing bevel gear; 155. First input lead screw assembly; 1550. First nut seat; 1551. First lead screw body; 156. First output lead screw assembly; 156 0. Second nut seat; 1561. Second lead screw body; 160. Arm pin insertion and removal transmission mechanism; 161. Second input rack; 1610. First horizontal part; 1611. Vertical connecting part; 1612. Second horizontal part; 162. Second output rack; 163. Second power reversing gear; 164. Second reversing mechanism; 1640. Third reversing bevel gear; 1641. Fourth reversing bevel gear; 165. Second input lead screw assembly; 1650. Third nut seat; 1651. Third lead screw body; 166. Second output lead screw assembly; 1660. Fourth nut seat; 1661. Fourth lead screw body;

[0059] 200. Telescopic boom section;

[0060] 300, arm pin; 310, pull pin. Detailed Implementation

[0061] The specific embodiments of this application 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 this application.

[0062] The present application will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0063] It should be noted that the X-axis, Y-axis and Z-axis directions shown in the attached figure can also be indicated as: the second axial direction, the first radial direction and the second radial direction.

[0064] Example 1

[0065] Please see Figure 1 and Figure 2 This embodiment provides a plug-in pin module 100, which is applied to a telescopic arm assembly. Each telescopic arm section 200 in the telescopic arm assembly is provided with at least one arm pin 300. The plug-in pin module 100 is used to realize the plugging and unplugging of the cylinder pin 120 and the arm pin 300.

[0066] The plug-in pin module 100 provided in this embodiment includes a base 110, a cylinder pin 120, a linear telescopic mechanism 130, an arm pin plug-in structure 140, a cylinder pin plug-in transmission mechanism 150, and an arm pin plug-in transmission mechanism 160. The cylinder pin 120, linear telescopic mechanism 130, arm pin plug-in structure 140, cylinder pin plug-in transmission mechanism 150, and arm pin plug-in transmission mechanism 160 are all arranged on the base 110. The base 110 is used to connect with the telescopic drive mechanism in the telescopic arm assembly.

[0067] The cylinder pin 120 is slidably disposed within the base 110 along the first radial direction of the telescopic arm assembly. A linear telescopic mechanism 130 is disposed on the base 110, and the linear telescopic mechanism 130 can output linear motion along the axial direction of the telescopic arm assembly. An arm pin insertion / removal structure 140 is slidably disposed on the base 110 along the second radial direction of the telescopic arm assembly. The arm pin insertion / removal structure 140 is used to connect the corresponding arm pin 300 in the telescopic arm assembly to realize the insertion and removal of the arm pin 300; wherein, each arm segment in the telescopic arm assembly is provided with at least one arm pin 300.

[0068] The cylinder pin insertion and removal transmission mechanism 150 is connected to the linear telescopic mechanism 130 and the cylinder pin 120. The cylinder pin insertion and removal transmission mechanism 150 can convert the linear motion output by the linear telescopic mechanism 130 into the ejection and retraction of the cylinder pin 120 along the first radial direction (corresponding to the insertion and removal of the pin, respectively). The arm pin insertion and removal transmission mechanism 160 is connected to the linear telescopic mechanism 130 and the arm pin insertion and removal structure 140. The arm pin insertion and removal transmission mechanism 160 can convert the linear motion output by the linear telescopic mechanism 130 into the ejection and retraction of the arm pin insertion and removal structure 140 along the first radial direction, thus realizing the insertion and removal of the arm pin 300 when connecting it.

[0069] In this embodiment, the cylinder pin insertion / removal transmission mechanism 150 and the arm pin insertion / removal transmission mechanism 160 are interlocked. Specifically, when the linear telescopic mechanism 130 outputs linear motion along the first axial direction of the telescopic arm assembly, the cylinder pin insertion / removal transmission mechanism 150 drives the cylinder pin 120 to extend, and the arm pin insertion / removal transmission mechanism 160 drives the arm pin insertion / removal structure 140 to retract. When the linear telescopic mechanism 130 outputs linear motion along the second axial direction of the telescopic arm assembly, the arm pin insertion / removal transmission mechanism 160 drives the arm pin insertion / removal structure 140 to extend, and the cylinder pin insertion / removal transmission mechanism 150 drives the cylinder pin 120 to retract. Thus, after the cylinder pin 120 is extended, the arm pin 300 is pulled out; only after the arm pin 300 is extended can the cylinder pin 120 be pulled out, achieving interlocking linkage. The first axial direction and the second axial direction are opposite in orientation.

[0070] Thus, in the plug-in pin module 100 provided in this embodiment, the power source for the driving cylinder pin 120 and the arm pin plug-in structure 140 (which is the actuator for plugging and unplugging the arm pin 300) is the linear telescopic mechanism 130. Therefore, in this embodiment, only one linear telescopic mechanism 130 needs to be configured. The plugging and unplugging of the cylinder pin 120 and the arm pin 300 and the interlocking during the plugging and unplugging process are controlled by the corresponding cylinder pin plug-in transmission mechanism 150 and arm pin plug-in transmission mechanism 160. Furthermore, there is no need to configure a spring for the cylinder pin 120, which simplifies the overall structure, improves reliability, and reduces maintenance costs.

[0071] To more clearly illustrate the technical solution of this application, the plug-in pin module 100 provided in this embodiment is described below as an example:

[0072] The aforementioned linear telescopic mechanism 130 can be selected as a hydraulic cylinder, an electric cylinder, or a motor lead screw structure, etc. It should be understood that the above are merely illustrative examples and are not intended to limit the scope of protection of this application.

[0073] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The aforementioned cylinder pin insertion and removal transmission mechanism 150 includes a first input rack 151, a first output rack 152, and a first power reversing gear 153. The first input rack 151 is mounted on and connected to the linear telescopic mechanism 130, which drives the first input rack 151 in linear motion. The first output rack 152 is connected to the cylinder pin 120. The first power reversing gear 153 is rotatably mounted on the base 110 and meshes with both the first input rack 151 and the first output rack 152. The axial direction of the first power reversing gear 153 is perpendicular to both the linear motion direction and the first radial direction of the first input rack 151.

[0074] Thus, when the linear telescopic mechanism 130 outputs linear motion, the first input rack 151 is synchronously driven to perform linear motion, and its motion direction can be the first axial direction and the second axial direction. Then, the first input rack 151 drives the first power reversing gear 153 to rotate, and the first power reversing gear 153 then drives the first output rack 152 to drive the cylinder pin 120 to push out or retract.

[0075] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The aforementioned arm pin insertion and removal transmission mechanism 160 includes a second input rack 161, a second output rack 162, and a second power reversing gear 163. The second input rack 161 is mounted on and connected to the linear telescopic mechanism 130, which drives the second input rack 161 to perform linear motion. The second output rack 162 is slidably mounted on the base 110 along the second radial direction and connected to the arm pin insertion and removal structure 140. The second power reversing gear 163 is rotatably mounted on the base 110 and meshes with the second input rack 161 and the second output rack 162 respectively. The axial direction of the second power reversing gear 163 is perpendicular to the linear motion direction and the second radial direction of the second input rack 161.

[0076] Thus, when the linear telescopic mechanism 130 outputs linear motion, the second input rack 161 is synchronously driven to perform linear motion, and its motion direction can be either the first axial direction or the second axial direction. Then, the second input rack 161 drives the second power reversing gear 163 to rotate, and the second power reversing gear 163 then drives the second output rack 162 to extend and retract the arm pin insertion and removal structure 140, thereby realizing the extension or retraction of the arm pin 300 through the arm pin insertion and removal structure 140.

[0077] Please see Figure 2 , Figure 3 , Figure 4 and Figure 5 In this embodiment, a first coordinate system is established with the center of the first power reversing gear 153 as the origin, and the first coordinate system is located in the XY plane. In the first coordinate system, the second axial direction is defined as the positive X-axis direction, and the direction in which the cylinder pin 120 is pushed out is defined as the positive Y-axis direction. Specifically, the first input rack 151 meshes with the first power reversing gear 153 on the negative Y-axis side, and the first output rack 152 meshes with the first power reversing gear 153 on the negative X-axis side.

[0078] A second coordinate system is established with the center of the second power reversing gear 163 as the origin. The second coordinate system is located in the XZ plane. In the second coordinate system, the second axial direction is defined as the positive X-axis direction, and the direction in which the arm pin insertion structure 140 is pushed out is defined as the positive Z-axis direction. The second input rack 161 meshes with the second power reversing gear 163 on the side of the positive Z-axis direction, and the second output rack 162 meshes with the second power reversing gear 163 on the side of the negative X-axis direction.

[0079] like Figure 5 As shown, the insertion and removal pin module 100 provided in this embodiment performs the following actions to remove the cylinder pin 120 from the insertion arm pin 300: The linear telescopic mechanism 130 drives the second input rack 161 to move along the second axial direction (positive X-axis direction), and the second power reversing gear 163 rotates clockwise and drives the second output rack 162 to push the insertion and removal pin structure 140 out along the positive Z-axis direction, thus realizing the action of the insertion arm pin 300. Simultaneously, the linear telescopic mechanism 130 also drives the first input rack 151 to move along the second axial direction (positive X-axis direction), and the first power reversing gear 153 rotates clockwise and drives the first output rack 152 to retract the cylinder pin 120 along the negative Y-axis direction, thus realizing the action of removing the cylinder pin 120.

[0080] Furthermore, the insertion and removal pin module 100 provided in this embodiment performs the following actions to insert the cylinder pin 120 and remove the arm pin 300: The linear telescopic mechanism 130 drives the first input rack 151 to move along the first axial direction (negative X-axis direction), and the first power reversing gear 153 rotates counterclockwise and drives the first output rack 152 to extend the cylinder pin 120 along the positive Y-axis direction, thus realizing the insertion of the cylinder pin 120. Simultaneously, the linear telescopic mechanism 130 also drives the second input rack 161 to move along the first axial direction (negative X-axis direction), and the second power reversing gear 163 rotates counterclockwise and drives the second output rack 162 to extend the arm pin insertion and removal structure 140 along the negative Z-axis direction, thereby realizing the removal of the arm pin 300.

[0081] Please refer to the following: Figure 6 In this application, the number of cylinder pins 120 can also be set to multiple. Specifically, this embodiment illustrates two cylinder pins 120, which are symmetrically arranged on both sides of the base 110, and each cylinder pin 120 is correspondingly equipped with a cylinder pin insertion and removal transmission mechanism 150. Both cylinder pin insertion and removal transmission mechanisms 150 are drivenly connected to the linear telescopic mechanism 130, so that the linear telescopic mechanism 130 can drive the two cylinder pin insertion and removal transmission mechanisms 150 to push out and retract synchronously.

[0082] In this embodiment, the first input rack 151 in the two cylinder pin insertion / removal transmission mechanisms 150 is integrated. In some embodiments, a slider is used to connect to the linear telescopic mechanism 130, and a first input rack 151 is installed on each side of the slider. The installation method can be screw installation, riveting installation, or welding installation. In other embodiments, a slider is used to connect to the linear telescopic mechanism 130, and rack structures are machined on both sides of the slider. These rack structures are the corresponding first input racks 151. Thus, in this embodiment, a single linear telescopic mechanism 130 can simultaneously drive the insertion / removal of the arm pin and two cylinder pins, resulting in a simpler structure and lower cost.

[0083] Please refer to the following: Figure 7 Furthermore, considering that the second input rack 161 needs to mesh with the second power reversing gear 163 on the positive Z-axis side and also connect to the linear telescopic mechanism 130, in order to avoid motion interference, the second input rack 161 is configured as a U-shaped structure in this embodiment. Specifically, the second input rack 161 includes a first horizontal portion 1610, a vertical connecting portion 1611, and a second horizontal portion 1612 connected in sequence. The first horizontal portion 1610 has protruding teeth along its length on the side facing the second horizontal portion 1612 for meshing with the second power reversing gear 163. The vertical connecting portion 1611 connects between the first horizontal portion 1610 and the second horizontal portion 1612, and the second horizontal portion 1612 is used to connect to the linear telescopic mechanism 130. In this way, the space surrounded by the first horizontal portion 1610, the vertical connecting portion 1611, and the second horizontal portion 1612 allows the second input rack 161 to avoid the second power reversing gear 163 during movement.

[0084] It should be noted that in some embodiments, the first input rack 151 and the first output rack 152 can be arranged in the same plane (XY plane) as the first power reversing gear 153 when there is no interference in their stroke. In other embodiments, if the first input rack 151 and the first output rack 152 interfere in their stroke, the first input rack 151 and the first output rack 152 can be staggered along the axial direction of the first power reversing gear 153. This can be achieved by thickening the first power reversing gear 153 or by adding a synchronously rotating first power reversing gear 153.

[0085] In some embodiments, when there is no interference in the stroke, the second input rack 161 and the second output rack 162 can be arranged in the same plane (XZ plane) as the second power reversing gear 163. In other embodiments, if there is interference in the stroke of the second input rack 161 and the second output rack 162, the second input rack 161 and the second output rack 162 can be staggered along the axial direction of the second power reversing gear 163. This can be achieved by thickening the second power reversing gear 163 or by adding a synchronously rotating second power reversing gear 163.

[0086] Please see Figure 1 and Figure 2 In this embodiment, the arm pin insertion and removal structure 140 includes a dovetail groove seat 141, and the dovetail groove seat 141 is provided with a dovetail slot 142 for the pull pin rod 310 on the arm pin 300 to be inserted into. The depth of the dovetail slot 142 is greater than the thickness of the head of the pull pin rod 310, so that the pull pin rod 310 has a certain movement gap after being inserted into the dovetail groove seat 141. This is to eliminate machining and assembly errors on the one hand, and to avoid rigid impact between the dovetail groove seat 141 and the pull pin rod 310 when the dovetail groove seat 141 moves with the base 110.

[0087] Example 2

[0088] Please see Figure 1 and Figure 8 This embodiment provides a pluggable pin module 100, applied to a telescopic boom assembly. This embodiment is an improvement on the technology of Embodiment 1 described above. The difference between this embodiment and Embodiment 1 is as follows:

[0089] In this embodiment, a first coordinate system is established with the center of the first power reversing gear 153 as the origin, and the first coordinate system is located in the XY plane. In the first coordinate system, the second axial direction is defined as the positive X-axis direction, and the direction in which the cylinder pin 120 is pushed out is defined as the positive Y-axis direction. Specifically, the first input rack 151 meshes with the first power reversing gear 153 on the negative Y-axis side, and the first output rack 152 meshes with the first power reversing gear 153 on the negative X-axis side.

[0090] A second coordinate system is established with the center of the second power reversing gear 163 as the origin. The second coordinate system is located in the XZ plane. In the second coordinate system, the second axial direction is defined as the positive X-axis direction, and the direction in which the arm pin insertion structure 140 is pushed out is defined as the positive Z-axis direction. The second input rack 161 meshes with the second power reversing gear 163 on the negative Z-axis side, and the second output rack 162 meshes with the second power reversing gear 163 on the positive X-axis side.

[0091] like Figure 8As shown, the insertion and removal pin module 100 provided in this embodiment performs the following actions to remove the cylinder pin 120 from the insertion arm pin 300: The linear telescopic mechanism 130 drives the second input rack 161 to move along the second axial direction (positive X-axis direction), and the second power reversing gear 163 rotates counterclockwise and drives the second output rack 162 to push the insertion and removal pin structure 140 out along the positive Z-axis direction, thus realizing the action of the insertion arm pin 300. Simultaneously, the linear telescopic mechanism 130 also drives the first input rack 151 to move along the second axial direction (positive X-axis direction), and the first power reversing gear 153 rotates clockwise and drives the first output rack 152 to retract the cylinder pin 120 along the negative Y-axis direction, thus realizing the action of removing the cylinder pin 120.

[0092] The insertion and removal pin module 100 provided in this embodiment performs the following actions to insert the cylinder pin 120 and remove the arm pin 300: The linear telescopic mechanism 130 drives the first input rack 151 to move along the first axial direction (negative X-axis direction), and the first power reversing gear 153 rotates counterclockwise and drives the first output rack 152 to extend the cylinder pin 120 along the positive Y-axis direction, thus realizing the action of inserting the cylinder pin 120. Simultaneously, the linear telescopic mechanism 130 also drives the second input rack 161 to move along the first axial direction (negative X-axis direction), and the second power reversing gear 163 rotates clockwise and drives the second output rack 162 to extend the arm pin insertion and removal structure 140 along the negative Z-axis direction, thereby realizing the action of removing the arm pin 300.

[0093] In this application, the number of cylinder pins 120 can also be set to multiple. Specifically, this embodiment illustrates two cylinder pins 120, which are symmetrically arranged within the base 110. Each cylinder pin 120 is correspondingly equipped with a cylinder pin insertion and removal transmission mechanism 150, and the first input rack 151 in the two cylinder pin insertion and removal transmission mechanisms 150 is integrated. In some embodiments, a slider is used to connect with the linear telescopic mechanism 130, and a first input rack 151 is installed on each side of the slider. The installation method can be screw installation, riveting installation, or welding installation. In other embodiments, a slider is used to connect with the linear telescopic mechanism 130, and rack portions 1510 are machined on both sides of the slider. The rack portions 1510 are the corresponding first input racks 151.

[0094] It should be noted that in some embodiments, the first input rack 151 and the first output rack 152 can be arranged in the same plane (XY plane) as the first power reversing gear 153 when there is no interference in their stroke. In other embodiments, if the first input rack 151 and the first output rack 152 interfere in their stroke, the first input rack 151 and the first output rack 152 can be staggered along the axial direction of the first power reversing gear 153. This can be achieved by thickening the first power reversing gear 153 or by adding a synchronously rotating first power reversing gear 153.

[0095] In some embodiments, when there is no interference in the stroke, the second input rack 161 and the second output rack 162 can be arranged in the same plane (XZ plane) as the second power reversing gear 163. In other embodiments, if there is interference in the stroke of the second input rack 161 and the second output rack 162, the second input rack 161 and the second output rack 162 can be staggered along the axial direction of the second power reversing gear 163. This can be achieved by thickening the second power reversing gear 163 or by adding a synchronously rotating second power reversing gear 163.

[0096] When cylinder pins 120 are provided on both sides of the base 110, both first lead screw bodies 1551 are driven and connected to a linear telescopic mechanism 130. In some embodiments, the ends of the two first lead screw bodies 1551 facing the linear telescopic mechanism 130 are connected as a whole by a slider, for example, by welding, threaded connection, or screw connection, and then connected to the linear telescopic mechanism 130 by the slider. Thus, in this embodiment, one linear telescopic mechanism 130 can simultaneously drive the insertion and removal of the arm pin and the two cylinder pins, resulting in a simpler structure and lower cost.

[0097] Example 3

[0098] Please see Figure 1 This embodiment provides a pluggable pin module 100, applied to a telescopic boom assembly. This embodiment is an improvement on the technology of Embodiment 1 described above. The difference between this embodiment and Embodiment 1 is as follows:

[0099] Please refer to the following: Figure 9 In this embodiment, the cylinder pin insertion and removal transmission mechanism 150 includes a first reversing mechanism 154, a first input lead screw assembly 155, and a first output lead screw assembly 156. The first reversing mechanism 154 is disposed on the base 110, and the first reversing mechanism 154 includes a first reversing bevel gear 1540 and a second reversing bevel gear 1541 that mesh with each other.

[0100] The first lead screw assembly 155 includes a first nut seat 1550 and a first lead screw body 1551 that is threadedly engaged with the first nut seat 1550. A first reversing bevel gear 1540 is disposed on the first nut seat 1550 and can rotate with the first nut seat 1550. The first lead screw body 1551 passes through the first nut seat 1550 and is connected to the linear telescopic mechanism 130 for transmission. The linear telescopic mechanism 130 drives the first lead screw body 1551 to perform linear motion. Thus, when the linear telescopic mechanism 130 drives the first lead screw body 1551 to perform linear motion, the first lead screw body 1551 can drive the first nut seat 1550 to rotate. Since the first reversing bevel gear 1540 is disposed on the first nut seat 1550 and can rotate with the first nut seat 1550, the rotation of the first nut seat 1550 will drive the first reversing bevel gear 1540 to rotate.

[0101] The first lead screw assembly 156 includes a second nut seat 1560 and a second lead screw body 1561 that is threadedly engaged with the second nut seat 1560. A second reversing bevel gear 1541 is mounted on the second nut seat 1560 and can rotate with the second nut seat 1560. The second lead screw body 1561 passes through the second nut seat 1560 and is connected to the cylinder pin 120. Thus, when the first reversing bevel gear 1540 rotates, it will drive the meshing second reversing bevel gear 1541 to rotate as well. Since the second reversing bevel gear 1541 is mounted on the second nut seat 1560 and can rotate with the second nut seat 1560, the second reversing bevel gear 1541 will drive the second nut seat 1560 to rotate together. The rotation of the second nut seat 1560 can drive the second lead screw body 1561 to push out and retract the cylinder pin 120 in the first radial direction, realizing the insertion and removal action of the cylinder pin 120.

[0102] In this embodiment, the threads of the first lead screw body 1551 and the second lead screw body 1561 have different directions. Thus, when the first lead screw body 1551 moves along the first axial direction, the second lead screw body 1561 can be driven to push out the cylinder pin 120 through the transmission of the first reversing bevel gear 1540 and the second reversing bevel gear 1541; when the first lead screw body 1551 moves along the second axial direction, the second lead screw body 1561 can be driven to retract the cylinder pin 120 through the transmission of the first reversing bevel gear 1540 and the second reversing bevel gear 1541.

[0103] Please refer to the following: Figure 10 The arm pin insertion and removal transmission mechanism 160 includes a second reversing mechanism 164, a second input lead screw assembly 165, and a second output lead screw assembly 166. The second reversing mechanism 164 is disposed on the base 110 and includes a third reversing bevel gear 1640 and a fourth reversing bevel gear 1641 that mesh with each other.

[0104] The second lead screw assembly 165 includes a third nut seat 1650 and a third lead screw body 1651 that is threadedly engaged with the third nut seat 1650. A third reversing bevel gear 1640 is mounted on the third nut seat 1650 and can rotate with the third nut seat 1650. The third lead screw body 1651 passes through the third nut seat 1650 and is connected to the linear telescopic mechanism 130 for transmission. The linear telescopic mechanism 130 drives the third lead screw body 1651 to perform linear motion. Thus, when the linear telescopic mechanism 130 drives the third lead screw body 1651 to perform linear motion, the third lead screw body 1651 can drive the third nut seat 1650 to rotate. Since the third reversing bevel gear 1640 is mounted on the third nut seat 1650 and can rotate with the third nut seat 1650, the rotation of the third nut seat 1650 will drive the third reversing bevel gear 1640 to rotate.

[0105] The second lead screw assembly 166 includes a fourth nut seat 1660 and a fourth lead screw body 1661 that is threadedly engaged with the fourth nut seat 1660. A fourth reversing bevel gear 1641 is mounted on the fourth nut seat 1660 and can rotate with the fourth nut seat 1660. The fourth lead screw body 1661 passes through the fourth nut seat 1660 and is connected to the arm pin insertion and removal structure 140. Thus, when the third reversing bevel gear 1640 rotates, it will drive the meshing fourth reversing bevel gear 1641 to rotate as well. Since the fourth reversing bevel gear 1641 is mounted on the fourth nut seat 1660 and can rotate with the fourth nut seat 1660, the fourth reversing bevel gear 1641 will drive the fourth nut seat 1660 to rotate together. The rotation of the fourth nut seat 1660 can drive the fourth lead screw body 1661 to push out and retract the arm pin insertion and removal structure 140 in the second radial direction, realizing the insertion and removal action of the arm pin 300.

[0106] In this embodiment, the thread directions of the third lead screw body 1651 and the fourth lead screw body 1661 are set to be the same. Thus, when the third lead screw body 1651 moves along the first axial direction, the fourth lead screw body 1661 can be driven to retract the arm pin insertion and removal structure 140 through the transmission of the third reversing bevel gear 1640 and the fourth reversing bevel gear 1641; when the third lead screw body 1651 moves along the second axial direction, the fourth lead screw body 1661 can be driven to push out the arm pin insertion and removal structure 140 through the transmission of the third reversing bevel gear 1640 and the fourth reversing bevel gear 1641, thereby realizing the action of the insertion arm pin 300.

[0107] Example 4

[0108] Please see Figures 1 to 10 This embodiment provides a telescopic boom assembly, including a basic boom, a multi-section telescopic boom section 200, a telescopic drive cylinder, and a plug-in pin module 100 provided according to any one of the embodiments one to three above.

[0109] A telescopic drive cylinder is located at the tail end of the basic arm and extends into the telescopic arm section 200. The plug-in pin module 100 is mounted on the telescopic drive cylinder. Specifically, the piston rod of the telescopic drive cylinder is located at the tail end of the basic arm, the cylinder body of the telescopic drive cylinder is telescopic, and the plug-in pin module 100 is mounted on the cylinder body of the telescopic drive cylinder. The cylinder body of the telescopic drive cylinder can freely drive the plug-in pin module 100 into the arm cavity of the telescopic arm section 200 located at the end of the telescopic arm.

[0110] Optionally, the telescopic drive cylinder can be a primary telescopic cylinder or a secondary telescopic cylinder.

[0111] This embodiment also provides an engineering machinery, including the telescopic boom assembly described above. The engineering machinery can be a truck crane or a crawler crane.

[0112] It should be noted that, in this application, unless otherwise stated, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" used to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0113] The structural arrangement of the telescopic boom 200, boom pin 300 and telescopic drive cylinder described above is well known to those skilled in the art and is not part of the core improvement of this application, so it will not be described in detail here.

[0114] In the description of this application, 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0115] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," 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 components; 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0116] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. 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.

[0117] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A plug-in pin module, applied to a telescopic boom assembly, characterized in that, The plug-in pin module (100) includes: Matrix (110); A cylinder pin (120) is slidably disposed within the base (110) along a first radial direction of the telescopic arm assembly; A linear telescopic mechanism (130) is disposed on the base (110); An arm pin insertion and removal structure (140) is slidably disposed on the base (110) along the second radial direction of the telescopic arm assembly. The arm pin insertion and removal structure (140) is used to connect the corresponding arm pin (300) in the telescopic arm assembly. A cylinder pin insertion / removal transmission mechanism (150) is used to drive the linear telescopic mechanism (130) and the cylinder pin (120); and A pin insertion / removal transmission mechanism (160) is used to drive the linear telescopic mechanism (130) and the pin insertion / removal structure (140). When the linear telescopic mechanism (130) outputs linear motion along the first axial direction of the telescopic arm assembly, the pin insertion / removal transmission mechanism (150) drives the pin (120) to extend, and the pin insertion / removal transmission mechanism (160) drives the pin insertion / removal structure (140) to retract. When the linear telescopic mechanism (130) outputs linear motion along the second axial direction of the telescopic arm assembly, the pin insertion / removal transmission mechanism (160) drives the pin insertion / removal structure (140) to extend, and the pin insertion / removal transmission mechanism (150) drives the pin (120) to retract. The first axial direction and the second axial direction are opposite in orientation.

2. The plug-in pin module according to claim 1, characterized in that, At least one cylinder pin (120) is provided on each side of the base (110). Two sets of cylinder pin insertion and removal transmission mechanisms (150) are provided. The two sets of cylinder pin insertion and removal transmission mechanisms (150) are respectively connected to the corresponding cylinder pin (120) and are also connected to the linear telescopic mechanism (130).

3. The plug-in pin module according to claim 1 or 2, characterized in that, The cylinder pin insertion and removal transmission mechanism (150) includes: The first input rack (151) is disposed on the linear telescopic mechanism (130) and is connected to the linear telescopic mechanism (130) in a transmission manner. The linear telescopic mechanism (130) drives the first input rack (151) to perform linear motion. The first output rack (152) is disposed on the cylinder pin (120); and The first power reversing gear (153) is rotatably mounted on the base (110) and meshes with the first input rack (151) and the first output rack (152) respectively for transmission. The axial direction of the first power reversing gear (153) is perpendicular to the linear motion direction of the first input rack (151) and the first radial direction, respectively.

4. The plug-in pin module according to claim 3, characterized in that, The arm pin insertion and removal transmission mechanism (160) includes: The second input rack (161) is disposed on the linear telescopic mechanism (130) and is connected to the linear telescopic mechanism (130) in a transmission manner. The linear telescopic mechanism (130) drives the second input rack (161) to perform linear motion. A second output rack (162) is slidably disposed on the base (110) along the second radial direction and connected to the arm pin insertion structure (140); and The second power reversing gear (163) is rotatably mounted on the base (110) and meshes with the second input rack (161) and the second output rack (162) respectively for transmission. The axial direction of the second power reversing gear (163) is perpendicular to the linear motion direction of the second input rack (161) and the second radial direction, respectively.

5. The plug-in pin module according to claim 4, characterized in that, A first coordinate system is established with the center of the first power reversing gear (153) as the origin. In the first coordinate system, the second axial direction is defined as the positive X-axis direction, and the direction in which the cylinder pin (120) pushes out is defined as the positive Y-axis direction. The first input rack (151) meshes with the first power reversing gear (153) on the side of the negative Y-axis direction, and the first output rack (152) meshes with the first power reversing gear (153) on the side of the negative X-axis direction. A second coordinate system is established with the center of the second power reversing gear (163) as the origin. In the second coordinate system, the second axial direction is defined as the positive X-axis direction, and the direction of the push-out of the arm pin insertion structure (140) is defined as the positive Z-axis direction. The second input rack (161) meshes with the second power reversing gear (163) on the side of the positive Z-axis direction, and the second output rack (162) meshes with the second power reversing gear (163) on the side of the negative X-axis direction; or, the second input rack (161) meshes with the second power reversing gear (163) on the side of the negative Z-axis direction, and the second output rack (162) meshes with the second power reversing gear (163) on the side of the positive X-axis direction.

6. The plug-in pin module according to claim 1 or 2, characterized in that, The cylinder pin insertion and removal transmission mechanism (150) includes: A first reversing mechanism (154) is disposed on the base (110). The first reversing mechanism (154) includes a first reversing bevel gear (1540) and a second reversing bevel gear (1541) that mesh with each other. The first input lead screw assembly (155) includes a first nut seat (1550) and a first lead screw body (1551) that engages with the threaded pair of the first nut seat (1550). A first reversing bevel gear (1540) is disposed on the first nut seat (1550) and can rotate with the first nut seat (1550). The first lead screw body (1551) passes through the first nut seat (1550) and is connected to the linear telescopic mechanism (130) for transmission. The linear telescopic mechanism (130) drives the first lead screw body (1551) to perform linear motion. The first lead screw assembly (156) includes a second nut seat (1560) and a second lead screw body (1561) that is threadedly engaged with the second nut seat (1560). The second reversing bevel gear (1541) is disposed on the second nut seat (1560) and can rotate with the second nut seat (1560). The second lead screw body (1561) passes through the second nut seat (1560) and is connected to the cylinder pin (120). The first lead screw body (1551) and the second lead screw body (1561) have different thread directions.

7. The plug-in pin module according to claim 1 or 2, characterized in that, The arm pin insertion and removal transmission mechanism (160) includes: The second reversing mechanism (164) is disposed on the base (110). The second reversing mechanism (164) includes a third reversing bevel gear (1640) and a fourth reversing bevel gear (1641) that mesh with each other. The second input lead screw assembly (165) includes a third nut seat (1650) and a third lead screw body (1651) that engages with the threaded pair of the third nut seat (1650). A third reversing bevel gear (1640) is mounted on the third nut seat (1650) and rotates with it. The third lead screw body (1651) passes through the third nut seat (1650) and is connected to the linear telescopic mechanism (130). The linear telescopic mechanism (130) drives the third lead screw body (1651) to perform linear motion. The second lead screw assembly (166) includes a fourth nut seat (1660) and a fourth lead screw body (1661) that is threadedly engaged with the fourth nut seat (1660). The fourth reversing bevel gear (1641) is disposed on the fourth nut seat (1660) and can rotate with the fourth nut seat (1660). The fourth lead screw body (1661) passes through the fourth nut seat (1660) and is connected to the arm pin insertion structure (140). The threads of the third lead screw body (1651) and the fourth lead screw body (1661) are in the same direction.

8. The plug-in pin module according to claim 1, characterized in that, The arm pin insertion and removal structure (140) includes a dovetail groove seat (141), and the dovetail groove seat (141) is provided with a dovetail slot (142) into which the pin rod (310) on the arm pin (300) can be inserted. The depth of the dovetail groove (142) is greater than the thickness of the head of the pull pin (310).

9. A telescopic boom assembly, characterized in that, It includes a basic boom, a multi-section telescopic boom (200), a telescopic drive cylinder, and a plug-in pin module (100) according to any one of claims 1-8; The telescopic drive cylinder is located on the tail of the basic arm and extends into the telescopic arm section (200), and the plug-in pin module (100) is located on the telescopic drive cylinder.

10. An engineering machinery, characterized in that, Includes the telescopic boom assembly according to claim 9.

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