A crane truss arm plug-in shaft electric cylinder

Abstract

The utility model relates to the field of crane, concretely relates to a crane truss arm plug -in shaft electric cylinder for the pin shaft and truss arm's pin shaft hole assembly connection, it includes: cylinder barrel, the cylinder barrel is equipped with the screw rod in, motor is equipped in the cylinder barrel, the output end of motor is connected the screw rod through speed reducer and reduction gearbox, electric cylinder support is equipped between the cylinder barrel and reduction gearbox, the electric cylinder support is used for fixing on the truss arm, cylinder rod is connected on the screw rod, the cylinder rod end is equipped with the pull -out head for connecting with the pin shaft, the utility model has cancelled the hydraulic line and has reduced the oil leakage risk, has improved the operation convenience, has reduced fuel consumption, after the electric cylinder support is fixed on the truss arm, moves through the screw rod and drives the cylinder rod to pass through the pull -out head and assembles the pin shaft with the pin shaft hole of truss arm and connects, and the operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of cranes, specifically to an electric cylinder for the insertion and removal shaft of a crane truss arm. Background Technology

[0002] Currently, crane gantry booms are assembled from multiple boom sections. During construction, these sections need to be assembled, and after completion, they need to be disassembled. Each boom section is connected by four pins, requiring hundreds of pin installations and disassemblies per construction project. The pin insertion and removal are currently done using hydraulic cylinders, requiring long hydraulic pipes to be installed on each boom section, and hydraulic pipe connectors to be placed at each boom joint to align with the cylinders. Workers must manually install or remove these hydraulic pipes on the gantry boom, which is inconvenient and prone to oil leaks that contaminate the boom. Utility Model Content

[0003] The purpose of this utility model is to provide an electric cylinder for inserting and removing the shaft of a crane truss arm. After the electric cylinder support is fixed on the truss arm, the cylinder rod is driven to move by the lead screw to assemble and connect the pin shaft with the pin hole of the truss arm through the puller. The operation is convenient and can avoid oil leakage and pollution.

[0004] This utility model provides an electric cylinder for inserting and removing a pin shaft of a crane truss arm, used for assembling and connecting a pin shaft with a pin hole in the truss arm, comprising: A cylinder barrel, wherein a lead screw is provided inside the cylinder barrel; An electric motor is mounted on the cylinder, and the output end of the motor is connected to the lead screw via a reducer and a reduction gearbox. An electric cylinder support is provided between the cylinder and the gearbox, and the electric cylinder support is used to fix it on the truss arm; A cylinder rod is connected to the lead screw, and the end of the cylinder rod is provided with a puller for connecting with a pin. The cylinder rod is driven to move by the lead screw after the electric cylinder support is fixed on the truss arm, so as to assemble and connect the pin with the pin hole of the truss arm through the puller.

[0005] Optionally, it also includes: A battery holder is provided on the cylinder, and a battery for powering the motor is installed on the battery holder.

[0006] Optionally, the battery and the battery holder are connected by a snap-fit ​​connection.

[0007] Optionally, it also includes: A housing is used to enclose the motor, cylinder, and gearbox.

[0008] Optionally, it also includes: A handle is provided on the motor.

[0009] Optionally, the gearbox includes: The pulley is connected to the output shaft of the reducer; A belt connects the pulley and the lead screw.

[0010] Optionally, the lead screw is provided with a lead screw nut, which is used to drive the cylinder rod to move along the lead screw axis when the lead screw rotates.

[0011] Optionally, the electric cylinder support includes a U-shaped groove structure for fixing to the truss arm.

[0012] Optionally, it also includes: A controller, mounted on the battery holder, is used to control the rotation of the motor.

[0013] Optionally, it also includes: A remote control is used to control the movement of the cylinder rod via the motor.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention employs an electric cylinder driven by a motor, eliminating hydraulic lines and reducing the risk of oil leaks, thus improving ease of operation and reducing fuel consumption. After the electric cylinder support is fixed to the truss arm, the cylinder rod is moved via a lead screw to assemble the pin with the pin hole of the truss arm using a puller, making operation convenient. Furthermore, the battery is integrated into the electric cylinder, allowing for removable charging or battery replacement, and the remote-controlled extension and retraction of the electric cylinder greatly enhances usability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the electric cylinder for the plug-in shaft of the crane truss arm according to an embodiment of the present utility model; Figure 2 This is a cross-sectional view of the electric cylinder for the insertion and removal shaft of the crane truss arm according to an embodiment of the present utility model; Figure 3 This is an installation diagram illustrating the assembly connection of the electric cylinder for the plug-in shaft of the crane truss arm with the pin hole of the truss arm, according to an embodiment of this utility model. Figure 4 This is a schematic diagram of the remote control for the electric cylinder of the crane truss arm insertion shaft, which is an embodiment of this utility model.

[0016] The following are the labeling elements in the diagram: 101. Battery; 102. Battery holder; 103. Handle; 104. Gearbox; 105. Electric cylinder support; 106. Cover; 107. Cylinder barrel; 108. Puller head; 109. Cylinder rod; 110. Lead screw; 111. Lead screw nut; 112. Pulley; 113. Belt; 114. Motor; 115. Gearbox; 116. Controller; 117. Remote control; 2. Pin; 201. Bolt head; 3. Truss arm; 301. Pin hole; 4. Base; 401. Limit hole. Detailed Implementation

[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating 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 utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., 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. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0019] To make the purpose, technical solution and advantages of this utility model patent clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] Combination Figure 1 and Figure 2This utility model proposes an electric cylinder for inserting and removing the shaft of a crane truss arm, used to assemble and connect the pin 2 to the pin hole 301 of the truss arm 3. It includes a cylinder 107, a motor 114, an electric cylinder support 105, and a cylinder rod 109. The cylinder 107 is equipped with a lead screw 110; the motor 114 is mounted on the cylinder 107, and the output end of the motor 114 is connected to the lead screw 110 through a reducer 115 and a reduction gearbox 104; the electric cylinder support 105 is located between the cylinder 107 and the reduction gearbox 104, and the electric cylinder support 105 is used to fix it on the truss arm 3; the cylinder rod 109 is connected to the lead screw 110, and the end of the cylinder rod 109 is provided with a puller 108 for connecting with the pin 2; the cylinder rod 109 is used to be driven to move by the lead screw 110 after the electric cylinder support 105 is fixed on the truss arm 3, so as to assemble and connect the pin 2 with the pin hole 301 of the truss arm 3 through the puller 108, thereby realizing the automatic insertion and removal of the pin 2.

[0021] In addition, the electric cylinder for the crane gantry boom also includes a battery holder 102, a cover 106, a handle 103, a lead screw nut 111, a controller 116, and a remote controller 117. The battery holder 102 is mounted on the cylinder 107, and a battery 101 for powering the motor 114 is installed on the battery holder 102. The battery 101 and the battery holder 102 are connected by a snap-fit, allowing for quick disassembly for charging or battery replacement, making installation convenient. The battery holder 102 is fixedly installed at the rear end of the controller 116, and the battery 101 is equipped with a power indicator light. The controller 116 is equipped with a remote controller 117, which can control the extension and retraction of the electric cylinder, making it easy to use. The remote controller 117 is equipped with an on / off switch, a battery status display, an extension button, and a retraction button. A handle 103 is fixedly installed above the motor 114 for easy access. The cover 106 encloses the motor 114, the reducer 115, and the cylinder 107 to prevent the electric cylinder from being bumped or knocked. The lead screw nut 111 is provided on the lead screw 110, and the lead screw nut 111 is used to drive the cylinder rod 109 to move along the axial direction of the lead screw 110 when the lead screw 110 rotates.

[0022] The reduction gearbox 104 includes a pulley 112 connected to the output shaft of the reducer 115, and a belt 113 connecting the pulley 112 and the lead screw 110. In another specific embodiment, the reduction gearbox 104 may also be a gear drive.

[0023] In one specific embodiment, the electric cylinder support 105 includes a U-shaped groove structure for fixing to the truss arm 3.

[0024] Combination Figure 3 The working principle of the electric cylinder for the insertion and removal shaft of the crane truss arm in this embodiment is as follows: The operator uses handle 103 to place the electric cylinder into the installation position of the truss arm 3, secures the electric cylinder support 105 into the limiting hole 401 of the base 4 of the truss arm 3, and secures the puller 108 onto the bolt head 201 of the pin 2. (Combined) Figure 4 The operator presses the power button on remote control 117, illuminating the battery status display 101. Pressing and holding the extend button starts motor 114, powering the cylinder rod 109 and puller head 108 via reducer 115, gearbox 104, lead screw 110, and lead screw nut 111, thus pushing pin 2 into the pin hole 301 of truss arm 3. Releasing the extend button stops the electric cylinder. Similarly, pressing and holding the retract button retracts puller head 108, pulling pin 2 out of the pin hole 301 of truss arm 3. Releasing the retract button stops the electric cylinder. When pin 2 reaches its limit, the electric cylinder automatically stops due to a stall condition. This process is repeated for other pins, completing the installation or removal of all four pins for each section of truss arm 3. The installation process for other sections of truss arm 3 is the same.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An electric cylinder for inserting and removing a truss boom shaft of a crane, used for assembling and connecting a pin (2) with a pin hole (301) of a truss boom (3), characterized in that, include: Cylinder (107), wherein a lead screw (110) is provided inside the cylinder (107); The motor (114) is mounted on the cylinder (107), and the output end of the motor (114) is connected to the lead screw (110) through the reducer (115) and the gearbox (104). An electric cylinder support (105) is provided between the cylinder (107) and the gearbox (104), and the electric cylinder support (105) is used to fix it on the truss arm (3); A cylinder rod (109) is connected to the lead screw (110), and the end of the cylinder rod (109) is provided with a puller (108) for connecting with the pin (2); the cylinder rod (109) is driven to move by the lead screw (110) after the electric cylinder support (105) is fixed on the truss arm (3) so as to assemble and connect the pin (2) with the pin hole (301) of the truss arm (3) through the puller (108).

2. The electric cylinder for inserting and removing the boom shaft of a crane truss as described in claim 1, characterized in that, Also includes: A battery holder (102) is provided on the cylinder (107), and a battery (101) for powering the motor (114) is installed on the battery holder (102).

3. The electric cylinder for inserting and removing the boom shaft of a crane truss as described in claim 2, characterized in that, The battery (101) and the battery holder (102) are connected by a snap-fit.

4. The electric cylinder for inserting and removing the truss boom of a crane according to claim 1, characterized in that, Also includes: A housing (106) is used to enclose the motor (114), cylinder (107) and reducer (115).

5. The electric cylinder for inserting and removing the boom shaft of a crane truss as described in claim 1, characterized in that, Also includes: A handle (103) is provided on the motor (114).

6. The electric cylinder for inserting and removing the boom shaft of a crane truss as described in claim 1, characterized in that, The gearbox (104) includes: The pulley (112) is connected to the output shaft of the reducer (115); A belt (113) connects the pulley (112) and the lead screw (110).

7. The electric cylinder for inserting and removing the boom shaft of a crane truss as described in claim 1, characterized in that, The lead screw (110) is provided with a lead screw nut (111), which is used to drive the cylinder rod (109) to move along the axial direction of the lead screw (110) when the lead screw (110) rotates.

8. The electric cylinder for inserting and removing the boom shaft of a crane truss as described in claim 1, characterized in that, The electric cylinder support (105) includes a U-shaped groove structure, which is used to fix it on the truss arm (3).

9. The electric cylinder for inserting and removing the boom shaft of a crane truss as described in claim 2, characterized in that, Also includes: A controller (116) is mounted on the battery holder (102) and is used to control the rotation of the motor (114).

10. The electric cylinder for inserting and removing the boom shaft of a crane truss as described in claim 1, characterized in that, Also includes: Remote control (117) is used to control the movement of the cylinder rod (109) via the motor (114).

Images