A motorized pulley block electric wear and tear device for a door machine

Abstract

The utility model discloses a gate machine movable pulley set electrically driven pin inserting and withdrawing device belongs to hydraulic engineering gate operation technical field, sets up on the connecting piece of gate machine movable pulley set bottom, including power assembly, connecting assembly, protection assembly and pin shaft inserts and withdraws the component, the pin shaft inserts and withdraws the component and includes pin shaft, with connecting piece fixed, is used for connecting connecting piece and the object of being hoisted to connect, power assembly is fixedly connected on the pin shaft inserts and withdraws the component through connecting assembly, is used for driving pin shaft moves, protection assembly is used for protecting power assembly. A gate machine movable pulley set electrically driven pin inserting and withdrawing device can effectively solve the problems of low efficiency, great working intensity caused by long time work and the like in the prior art through the operation of operating personnel in the inserting and withdrawing of the pin shaft of the gate machine movable pulley set.

Description

Technical Field

[0001] This utility model belongs to the technical field of gate operation in water conservancy projects. Specifically, it relates to an electric retraction device for a gate's motorized pulley block. Background Technology

[0002] Water conservancy and hydropower projects, ports and wharves, and open-air factories are generally equipped with winch-type gate hoists, such as gantry cranes, fixed winches, and trolleys, for hoisting gates, goods, and workpieces. These hoists use pins installed in the pin-operated device of the moving pulley block to lift gates or equipment. During cargo transfer, lifting of lever-type gates, and adjustment of trash rack positions, the pin-operated device of the pulley block needs frequent operation to connect and disconnect from the lifted object. The rationality of the structure and operation method of the pin-operated device directly affects the efficiency of the operation.

[0003] Currently, the insertion and removal of pins in gantry motorized pulley blocks are mainly carried out by operators on the maintenance platform. The operation of inserting and removing pins takes a long time, about 15 minutes per operation, resulting in low work efficiency. Secondly, it requires workers to work for long periods of time, which is quite strenuous. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned shortcomings by providing an electric pin-threading and retraction device for gantry motorized pulley blocks. This solves the problems of low efficiency and high labor intensity caused by manual operation of the pins in existing gantry motorized pulley block systems, where threading and retraction are performed by operators over extended periods. To achieve the above objective, this utility model provides the following technical solution: An electric pin-operated retraction device for a gantry motorized pulley block is disposed on a connector at the bottom of the gantry motorized pulley block, and includes a power component, a connecting component, a protective component, and a pin-operated retraction component; the pin-operated retraction component includes a pin, which is fixed to the connector and used to connect the connector to the object being lifted; the power component is fixedly connected to the pin-operated retraction component through the connecting component and is used to drive the pin to move; the protective component is used to protect the power component.

[0005] Furthermore, the pin insertion / retraction assembly includes a mounting housing and a lead screw; the mounting housing is fixed to one side of the connector; the lead screw is rotatably connected inside the mounting housing; the pin is threadedly engaged with the lead screw and is slidably disposed inside the mounting housing; the rotation of the lead screw drives the pin to extend or retract within the mounting housing toward the connector.

[0006] Furthermore, the power assembly includes a drive motor and a reducer; the drive motor is fixed to the outer side of the mounting housing away from the connector; the output shaft of the drive motor is connected to the lead screw through the reducer.

[0007] Furthermore, the reducer includes a driving gear and a driven gear that mesh with each other; the driven gear is coaxially fixed to the end of the lead screw away from the connecting member; the driving gear is coaxially fixedly connected to the output shaft of the drive motor.

[0008] Furthermore, the end of the lead screw away from the connector is connected to the mounting housing via a bearing; the center of the pin shaft is provided with a threaded hole to cooperate with the lead screw connection.

[0009] Furthermore, a coupling is provided between the output shaft of the drive motor and the drive gear.

[0010] Furthermore, the connecting assembly includes a connecting seat; the connecting seat is fixedly connected to the mounting shell by bolts; and the drive motor is fixed on the connecting seat.

[0011] Furthermore, the protective component includes a protective cover; the protective cover is fixedly connected to the connecting seat by screws and covers the drive motor.

[0012] Furthermore, it also includes a controller; the controller is used to control the drive motor, control the rotation speed and rotation direction, and realize the forward and backward movement of the pin.

[0013] Furthermore, the drive motor is provided with a terminal block; the controller is connected to a quick plug via a cable; the controller is connected to the terminal block via the quick plug.

[0014] The beneficial effects of this utility model are: This utility model discloses an electric pin-operated device for a gantry motorized pulley block. A drive motor drives a reducer to rotate a lead screw, which in turn drives a pin shaft to move along the connection hole between the connector and the suspended object, connecting and separating the connector from the suspended object. This replaces manual labor, reducing the workload of operators. A protective cover protects the drive motor, preventing rainwater and oil from entering and extending its service life. The controller uses a cable and quick-connect plug connection, reducing interference and ensuring stable control. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model in conjunction with the gantry motorized pulley block; Figure 3 This is a cross-sectional view of the connection between the mounting shell and the connector of this utility model; In the attached diagram: 1. Drive motor; 2. Connecting seat; 3. Coupling; 4. Protective cover; 41. Screw; 5. Controller; 6. Quick connector; 7. Connector; 8. Pin; 9. Mounting housing; 10. Lead screw; 11. Bolt; 12. Drive gear; 13. Driven gear; 14. Reducer. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the following embodiments.

[0017] In the description of this utility model, it should be understood that 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., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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 utility model.

[0018] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0019] In the description of this utility model, "multiple" means two or more.

[0020] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0021] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0022] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] Example 1 See attached Figures 1-3 This embodiment discloses an electric pin-operated retraction device for a gantry motorized pulley block, used to connect the gantry motorized pulley block to the object being lifted. The connecting member 7 at the bottom of the gantry motorized pulley block consists of two parallel connecting plates with symmetrical through holes. After the object being lifted mates with the connecting member 7, the connection is achieved by a pin 8 passing through the through hole of the connecting member 7 and the connecting hole of the object being lifted. The device includes a power component, a connecting component, a protective component, and a pin-operated retraction component. The pin-operated retraction component includes a pin 8, which is fixed to the connecting member 7 and used to connect the connecting member 7 to the object being lifted. The power component is fixedly connected to the pin-operated retraction component through the connecting component and is used to drive the pin 8 to move. The protective component protects the power component. The pin-operated retraction component, as the core structure for achieving the connection, includes a mounting shell 9 and a lead screw 10. The mounting shell 9 is firmly connected to the connecting member 7 at the bottom of the gantry motorized pulley block by welding or bolts 11, ensuring that the mounting shell 9 does not undergo relative displacement during subsequent operations. The mounting housing 9 has a pre-reserved mounting cavity for the lead screw 10. The lead screw 10 is rotatably mounted in the mounting housing 9 via a deep groove ball bearing, with sealing gaskets at both ends of the bearing to prevent dust or liquid from entering and affecting rotational accuracy. A threaded hole matching the external thread of the lead screw 10 is machined at the center of the pin 8, enabling the pin 8 to drive the lead screw 10. Simultaneously, the outer circumferential surface of the pin 8 slides against the inner wall of the mounting housing 9. To allow axial movement of the pin 8, a guide boss is machined on the inner wall of the mounting housing 9, and a corresponding guide keyway is provided on the outer side of the pin 8. The guide boss is embedded in the guide keyway, restricting the pin 8 from rotating synchronously with the lead screw 10, allowing it only to perform linear extension and retraction along the axis of the mounting housing 9. When the lead screw 10 rotates in both directions, the threaded drive converts the rotational motion into axial movement of the pin 8, thereby enabling the pin 8 to extend or retract towards or away from the connecting piece 7, completing the connection or separation from the suspended object.

[0024] In this embodiment, the power assembly includes a drive motor 1 and a reducer 14. The drive motor 1 is a three-phase asynchronous motor with braking function, integrating power output and braking functions. The reducer 14 is a gear reducer 14, consisting of a meshing drive gear 12 and a driven gear 13. The driven gear 13 is coaxially fixed to the end of the lead screw 10 away from the connector 7. The drive gear 12 is coaxially fixed to the output shaft of the drive motor 1, and the meshing surfaces of the drive gear 12 and the driven gear 13 are coated with grease to reduce meshing wear and improve transmission efficiency. To ensure the coaxiality of the connection between the output shaft of the drive motor 1 and the drive gear 12, a coupling 3 is provided between them. The two ends of the coupling 3 are fixed to the shaft sleeves of the drive motor 1 and the drive gear 12, respectively. The coupling 3 can compensate for minor coaxiality deviations generated during installation, reduce transmission impact, and protect the motor and gear structure. When drive motor 1 is working, its output torque is transmitted to drive gear 12 via coupling 3. Drive gear 12 drives driven gear 13 to rotate, achieving speed reduction and torque increase through gear transmission. Finally, the torque is transmitted to lead screw 10, driving lead screw 10 to rotate and providing power for the insertion and retraction of pin 8. At the same time, the braking function of drive motor 1 can quickly lock the output shaft when the motor stops running, preventing lead screw 10 from continuing to rotate due to inertia and causing pin 8 to shift, thus ensuring operational safety.

[0025] In this embodiment, the connecting component includes a connecting seat 2, which can be formed by welding steel plates. The housing of the drive motor 1 is fastened to the connecting seat 2 by bolts 11. The outer side of the mounting shell 9 away from the connector 7 is fixedly connected by high-strength bolts 11, which can withstand the reaction force generated when the drive motor 1 is working, ensuring that the drive motor 1 is under stable force during operation. The contact surface between the drive motor 1 and the connecting seat 2 is provided with shock-absorbing pads to reduce the vibration transmitted to the mounting shell 9 and connector 7 during motor operation, thereby reducing the vibration noise of the overall device.

[0026] In this embodiment, the protective component includes a protective cover 4, which can be made of stainless steel sheet by stamping, and has good corrosion resistance and mechanical strength. The protective cover 4 is fixedly connected to the connecting seat 2 by screws 41. The protective cover 4 has a semi-enclosed structure, and its spatial dimensions are adapted to the shape of the drive motor 1 and the reducer 14, which can completely cover the drive motor 1 from below, thereby reducing the intrusion of impurities such as rainwater, oil, and dust into the motor.

[0027] In this embodiment, the device also includes a controller 5, which is installed near the operating platform of the gantry crane beam for easy operation by the operator. The controller 5 integrates a frequency converter module, an overload protection module, a forward / reverse control module, and a power supply module. The frequency converter module enables stepless speed regulation of the drive motor 1, adjusting the speed of the drive motor 1 according to the travel requirements of the pin 8 during insertion and retraction. It reduces the speed when the pin 8 is about to reach its limit position, achieving smooth start-up and shutdown and avoiding impact loads. The overload protection module monitors the operating current of the drive motor 1 in real time. When the current exceeds the rated value, it automatically cuts off the power supply to protect the drive motor 1 and the reducer 14 from damage. The forward / reverse control module controls the rotation direction of the drive motor 1 via a push-button switch, thereby realizing the forward insertion and retraction actions of the pin 8. A quick-connect plug 6 is provided on the drive motor 1. The controller 5 is connected to the quick-connect plug 6 via a cable. The cable is wrapped with a wear-resistant and weather-resistant protective sleeve to prevent cable wear and leakage during long-term use. When it is necessary to insert or remove pins, the operator inserts the quick plug 6 into the terminal block of the drive motor 1 to connect the controller 5 and the power unit. After the pin insertion or removal is completed, the quick plug 6 is unplugged to disconnect the controller 5 from the power unit. At this time, the pulley block can be lifted and lowered freely without being restrained by the cable, avoiding cable entanglement that may affect the hoisting operation.

[0028] The specific workflow of this embodiment is as follows: When it is necessary to perform operations such as gate hoisting, cargo transfer, or adjustment of trash rack position, and the movable pulley block needs to be connected to the object being hoisted, the operator first inserts the quick plug 6 into the terminal block of the drive motor 1 to establish a circuit connection between the controller 5 and the power component. Subsequently, the operator operates the forward rotation button of the controller 5 on the operating platform of the gantry crane beam. The controller 5 outputs the corresponding control signal through the frequency converter module, the drive motor 1 starts and drives the drive gear 12 to rotate. The drive gear 12 meshes with the driven gear 13 to transmit torque to the lead screw 10, which rotates smoothly under the support of the bearing. Since the pin 8 is threaded into the lead screw 10 and cannot rotate due to the guide boss of the mounting housing 9, the rotational motion of the lead screw 10 is converted into the linear forward motion of the pin 8 along the axis of the mounting housing 9. The pin 8 gradually extends and inserts into the connection hole of the object being hoisted, realizing a firm connection between the movable pulley block and the object being hoisted. When the pin 8 reaches the preset pin insertion position, the operator releases the forward rotation button, and the braking function of the drive motor 1 is immediately activated, locking the output shaft to prevent the pin 8 from retracting. Then, the quick plug 6 is unplugged to complete the pin insertion operation, and the movable pulley block can then drive the suspended object to be lifted and transported.

[0029] When the work is completed and it is necessary to separate the movable pulley block from the suspended object, the operator inserts the quick-connect plug 6 back into the terminal block of the drive motor 1, operates the reverse button on the controller 5, and the drive motor 1 rotates in the reverse direction. Through gear transmission, it drives the lead screw 10 to rotate in the reverse direction. Under the action of the thread, the pin 8 retracts along the axis of the mounting shell 9, gradually disengaging from the connection hole of the suspended object, thus realizing the pin retraction action. After the pin retraction is completed, the reverse button is released, the motor brakes and locks, the quick-connect plug 6 is unplugged, and the movable pulley block can return to its initial position or proceed to the next operation.

[0030] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. An electric retraction pin device for a gantry motorized pulley block, disposed on a connecting member (7) at the bottom of the gantry motorized pulley block, characterized in that: It includes a power component, a connecting component, a protective component, and a pin (8) insertion / retraction component; the pin (8) insertion / retraction component includes a pin (8) which is fixed to the connector (7) and is used to connect the connector (7) to the object being hoisted; the power component is fixedly connected to the pin (8) insertion / retraction component through the connecting component and is used to drive the pin (8) to move; the protective component is used to protect the power component.

2. The electric insertion and retraction device for a door motorized pulley block according to claim 1, characterized in that: The pin (8) insertion and withdrawal assembly includes a mounting housing (9) and a lead screw (10); the mounting housing (9) is fixed to one side of the connector (7); the lead screw (10) is rotatably connected inside the mounting housing (9); the pin (8) is threadedly engaged with the lead screw (10) and is slidably disposed inside the mounting housing (9); the rotation of the lead screw (10) drives the pin (8) to extend and retract in the direction of the connector (7) inside the mounting housing (9).

3. The electric insertion and retraction device for a door motorized pulley block according to claim 2, characterized in that: The power assembly includes a drive motor (1) and a reducer (14); the drive motor (1) is fixed to the outer side of the mounting housing (9) away from the connector (7); the output shaft of the drive motor (1) is connected to the lead screw (10) through the reducer (14).

4. The electric insertion and retraction device for a door motorized pulley block according to claim 3, characterized in that: The reducer (14) includes a driving gear (12) and a driven gear (13) that mesh with each other; the driven gear (13) is coaxially fixed to one end of the lead screw (10) away from the connector (7); the driving gear (12) is coaxially fixedly connected to the output shaft of the drive motor (1).

5. The electric insertion and retraction device for a door motorized pulley block according to claim 2, characterized in that: The end of the lead screw (10) away from the connector (7) is connected to the mounting housing (9) through a bearing; the center of the pin (8) is provided with a threaded hole, which is used to connect with the lead screw (10).

6. The electric insertion and retraction device for a door motorized pulley block according to claim 4, characterized in that: A coupling (3) is provided between the output shaft of the drive motor (1) and the drive gear (12).

7. The electric insertion and retraction device for a door motorized pulley block according to claim 3, characterized in that: The connecting assembly includes a connecting seat (2); the connecting seat (2) is fixedly connected to the mounting shell (9) by bolts (11); the drive motor (1) is fixed on the connecting seat (2).

8. The electric insertion and retraction device for a door motorized pulley block according to claim 7, characterized in that: The protective assembly includes a protective cover (4); the protective cover (4) is fixedly connected to the connecting seat (2) by screws (41) and covers the drive motor (1).

9. The electric insertion and retraction device for a door motorized pulley block according to claim 3, characterized in that: It also includes a controller (5); the controller (5) is used to control the drive motor (1), control the rotation speed and rotation direction, and realize the forward and backward movement of the pin (8).

10. The electric insertion and retraction device for a door motorized pulley block according to claim 9, characterized in that: The drive motor (1) is provided with a terminal block; the controller (5) is connected to a quick plug (6) via a cable; the controller (5) is connected to the terminal block via the quick plug (6).

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