A telescopic portal crane jib with self-adapting gate size

Abstract

The utility model discloses a telescopic door machine grab beam of self -adaptation gate size, including grab beam main part, positioning device and pass through pin device, the both ends of grab beam main part are provided with the installation cavity symmetry, and the telescopic extension assembly is slidably installed in all through the sliding component in the installation cavity, the outlet of installation cavity all is equipped with the support component, and support component and grab beam main part top fixed cooperation, and extension assembly can be slidably received on the corresponding support component, and the length of grab beam can be changed through extension assembly, thereby changing the distance of pass through pin device, and the door groove and gate of all sizes are adapted, and the applicability is increased, and the sliding component improves the smoothness of telescopic, and the support component guarantees that the girder is stressed stable.

Description

Technical Field

[0001] This utility model relates to the field of lifting auxiliary equipment technology, and in particular to a telescopic gantry crane grab beam that can adapt to the gate size. Background Technology

[0002] In hydropower production operations, gantry cranes are typically used to operate grab beams to lift and lower hydraulic metal gates. When lifting or lowering the gate, firstly, a grab beam matching the gate size is selected. Precise alignment between the grab beam and the gate is achieved through the engagement of its locating pins with the gate's locating sleeve. Then, a through-pin is used to connect the grab beam and the gate.

[0003] The existing beam clamps have the following problems:

[0004] 1. The left and right pin positions of the existing grab beam are fixed, which means that it can only connect to gates of fixed size. However, the gates in the hydropower production area are of different sizes. If grab beams are designed for different sizes of gates, the cost will be high, it will occupy more production space, and it will take a long time to replace different grab beams, resulting in low production efficiency.

[0005] 2. Although the pin shaft of the hydraulic automatic grab beam with adjustable pin position of CN208747465U can move, the following problems still exist: the positioning device of the gate slot cannot move during the movement, and it cannot be guaranteed that the grab beam is located in the center of the gate slot during use. Secondly, after the grab beam is made into a hollow structure, when the gate is lifted, most of the gravity is borne by the bottom of the grab beam instead of the entire grab beam, which can easily cause the grab beam to tear or be damaged, affecting the life and stability of the grab beam. Utility Model Content

[0006] This utility model provides a telescopic gantry crane grab beam that can adapt to the gate size, aiming to solve the above-mentioned defects of grab beams that have poor applicability to gates of different sizes, as well as poor service life and operational stability while ensuring applicability.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A telescopic gantry crane grab beam that can adapt to the gate size includes a grab beam body, a positioning device, and a pin insertion device. The grab beam body has symmetrically provided mounting cavities at both ends. Each mounting cavity has a telescopic extension component slidably installed in it via a sliding assembly. Each mounting cavity has a support component at its outlet, and the support component is fixedly engaged with the top of the grab beam body. The extension component is slidably supported on the corresponding support component.

[0009] Preferably, the extension components at both ends are arranged symmetrically about the middle position of the main body of the grab beam, and the extension components move synchronously.

[0010] More preferably, each of the extension components includes a support beam sleeved in the mounting cavity. The support beam slides axially with the corresponding mounting cavity through a sliding component. A hydraulic cylinder is provided in the mounting cavity. One end of the hydraulic cylinder is fixed to the inner wall of the end of the mounting cavity, and the other end of the hydraulic cylinder is fixed to the end of the support beam located in the mounting cavity.

[0011] Furthermore, the mounting cavity is concentric and coaxial with the main body of the grab beam, the support beam is concentric and coaxial with the mounting cavity, and the hydraulic cylinder is concentric and coaxial with the support beam.

[0012] Furthermore, the sliding assembly includes rounded corner grooves fixedly arranged at the four corners of the mounting cavity. The rounded corner grooves all extend axially. The four corners of the support beam and the four corners of the mounting cavity are all set with rounded corner structures, and the four corners of the support beam match the corresponding rounded corner grooves to form axial sliding.

[0013] Specifically, the support assembly includes a base plate located below the outlet of the mounting cavity. The base plate is in close contact with the bottom of the grab beam body. The base plate is hoisted and fixed to the grab beam body by a hoisting frame. The base plate extends away from the mounting cavity. A sliding frame is provided on the top of one side of the extended side of the base plate. The support beam slides with the base plate through the sliding frame and is supported on the base plate.

[0014] More specifically, the hoisting frame includes right-angled triangular frames arranged symmetrically about the base plate. The right-angled triangular frames are all vertically welded to both sides of the base plate. The top of the grab beam body is provided with a top frame. The top of the right-angled triangular frames corresponds to the two ends of the top frame one by one, and the top of the right-angled triangular frames is welded and fixed to the corresponding end of the top frame. The top frame is supported on the top of the grab beam body and welded and fixed.

[0015] In detail, the sliding frame includes a mounting frame located at the top of one side of the extended side of the base plate. The mounting frames are arranged opposite each other and symmetrical about the middle position of the base plate. Several rotating rollers are rotatably mounted between the mounting frames. The support beam is in contact with the rotating rollers, and the rotation direction of the rotating rollers is tangent to the movement direction of the support beam.

[0016] More specifically, the support beam is provided with positioning devices on both ends outside the mounting cavity. The positioning devices are symmetrical about the support beam, and the support beam is centered and limited in the door slot by the positioning devices.

[0017] Preferably, the bottom end of the support beam located outside the mounting cavity is provided with a pin device.

[0018] The beneficial effects of this utility model are:

[0019] (1) The length of the grab beam body can be changed by extending the components, which can meet the connection operation of gates of different sizes and lengths, ensuring the smooth lifting and lowering of the gate and increasing its applicability;

[0020] (2) The gravity of the extension component is transferred to the top of the grab beam body by the support component, so that the entire grab beam body bears the force of the extension component. On the one hand, the normal extension and contraction of the extension component is ensured by the rotating roller of the support component, and on the other hand, the strength of the main beam is improved, avoiding problems such as tearing of the main beam structure caused by the extension and contraction of the grab beam arm, thus ensuring service life and stability of use.

[0021] (3) The sliding component is used in conjunction with the rotating roller to make the extension and retraction process smoother, and the hydraulic cylinder provides the driving force for extension and retraction, thereby improving the speed and efficiency of length change. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main appearance of the present utility model;

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure inside the mounting cavity of this utility model;

[0024] Figure 3 This is a schematic diagram of the installation at the mounting cavity of this utility model;

[0025] Figure 4 This is a schematic diagram of the support component structure of this utility model;

[0026] In the diagram: 1. Main body of the grab beam; 101. Installation cavity;

[0027] 2. Extension assembly; 201. Support beam; 202. Hydraulic cylinder;

[0028] 3. Support components; 301. Base plate; 302. Right-angled triangular frame; 303. Top frame; 304. Mounting frame; 305. Rotating roller;

[0029] 4. Sliding component; 401. Rounded corner groove;

[0030] 5. Positioning device;

[0031] 6. Pin insertion device. Detailed Implementation

[0032] The embodiments will be further described below with reference to the accompanying drawings.

[0033] like Figures 1-4 As shown in the preferred embodiment 1, a telescopic gantry crane grab beam that can adapt to the gate size includes a grab beam body 1, a positioning device 5, and a pin insertion device 6. The grab beam body 1 has symmetrically provided mounting cavities 101 at both ends. A telescopic extension component 2 is slidably installed in each mounting cavity 101 through a sliding component 4. A support component 3 is provided at the outlet of each mounting cavity 101, and the support component 3 is fixedly engaged with the top of the grab beam body 1. The extension component 2 is slidably supported on the corresponding support component 3.

[0034] In a preferred embodiment 2, the extension components 2 at both ends are symmetrically arranged about the middle position of the grab beam body 1, and the extension components 2 move synchronously. This ensures that the grab beam body 1 is under balanced force during length changes and remains stable during use.

[0035] In a preferred embodiment 3, each extension component 2 includes a support beam 201 fitted within the mounting cavity 101. The support beam 201 slides axially with the corresponding mounting cavity 101 via a sliding component 4. A hydraulic cylinder 202 is provided within the mounting cavity 101, with one end fixed to the inner wall of the end of the mounting cavity 101 and the other end fixed to the end of the support beam 201 located within the mounting cavity 101. Driven by the hydraulic cylinder 202, the support beam 201 moves within the mounting cavity 101, thereby changing its exposed length and thus altering the overall length of the main beam.

[0036] The hydraulic cylinder 202 is connected to an external oil supply device via an oil circuit.

[0037] The mounting cavity 101 is concentric and coaxial with the grab beam body 1, the support beam 201 is concentric and coaxial with the mounting cavity 101, and the hydraulic cylinder 202 is concentric and coaxial with the support beam 201. This ensures stable installation, thereby ensuring stable operation.

[0038] In a preferred embodiment 4, the sliding assembly 4 includes rounded corner grooves 401 fixedly arranged at the four corners of the mounting cavity 101. All rounded corner grooves 401 extend axially. The four corners of the support beam 201 and the corresponding rounded corner grooves 401 are also rounded, and the four corners of the support beam 201 match the corresponding rounded corner grooves 401 to form an axial sliding mechanism. This ensures smooth movement of the support beam 201, facilitates length adjustment, and improves adjustment efficiency.

[0039] As a preferred embodiment 5, the support assembly 3 includes a base plate 301 located below the outlet of the mounting cavity 101. The base plate 301 is in close contact with the bottom of the grab beam body 1. The base plate 301 is hoisted and fixed to the grab beam body 1 by a hoisting frame. The base plate 301 extends toward the side away from the mounting cavity 101. A sliding frame is provided on the top of one side of the extended side of the base plate 301. The support beam 201 slides with the base plate 301 through the sliding frame and is supported on the base plate 301.

[0040] The hoisting frame includes right-angled triangular frames 302 symmetrically arranged about the base plate 301. Each right-angled triangular frame 302 is vertically welded to both sides of the base plate 301. A top frame 303 is provided on the top of the grab beam body 1. The top of each right-angled triangular frame 302 corresponds to one end of the top frame 303, and the top of each right-angled triangular frame 302 is welded and fixed to the corresponding end of the top frame 303. The top frame 303 is supported on the top of the grab beam body 1 and welded and fixed. One right-angled side of each right-angled triangular frame 302 is welded to the base plate 301, and the other right-angled side is vertically upward and welded and fixed to the top frame 303.

[0041] The top frame 303 and the right-angled triangular frame 302 cooperate with the bottom plate 301 to form a basket structure, which transfers the load-bearing force from the bottom of the installation cavity 101 to the top of the grab beam body 1, so that the entire grab beam body 1 is used as the load-bearing body, improving the stability and service life of the device, and preventing accidents such as tearing at the bottom of the installation cavity 101 during the extension and retraction process.

[0042] The sliding frame includes a mounting frame 304 located on the top of one side of the extended side of the base plate 301. The mounting frames 304 are arranged opposite each other and symmetrical about the middle position of the base plate 301. A plurality of rotating rollers 305 are rotatably mounted between the mounting frames 304. The support beam 201 is in contact with the rotating rollers 305, and the rotation direction of the rotating rollers 305 is tangential to the movement direction of the support beam 201. This ensures the sliding of the support beam 201, ensures load-bearing, and does not hinder the sliding process.

[0043] In a preferred embodiment 6, positioning devices 5 are provided on both ends of the support beam 201 outside the mounting cavity 101. The positioning devices 5 are symmetrical about the support beam 201, and the support beam 201 is centrally positioned within the gate slot by the positioning devices 5. This allows for adaptation to different gate slots. The existing positioning devices 5 are arranged on the support beam 201 to achieve synchronous movement, thereby meeting the applicability for different gate sizes and ensuring that the grab beam body 1 is always located in the middle of the gate slot, guaranteeing stability during use and preventing the grab beam body 1 from colliding with the gate slot.

[0044] In a preferred embodiment 7, the bottom end of the support beam 201 outside the mounting cavity 101 is provided with a pin device 6. This facilitates connection for gates of different sizes. The existing pin device 6 is arranged on the support beam 201 to achieve synchronous movement, thereby meeting the applicability for different gate sizes.

[0045] The working principle of this utility model:

[0046] (1) The length of the grab beam body 1 can be changed by the extension component 2, which can meet the connection operation of gates of different sizes and lengths, ensuring the smooth lifting and lowering of the gate and increasing applicability. When in use, adjust the length of the extension components 2 on both sides of the grab beam according to the gate of different sizes and lengths until the length of the grab beam meets the requirements of the corresponding gate. Then fix the position of the two side arms. At this time, after the grab beam is lowered to the gate head position and stabilized, the pin is inserted to complete the connection between the grab beam and the gate.

[0047] (2) The gravity of the extension component 2 is transferred to the top of the grab beam body 1 by the support component 3, so that the entire grab beam body 1 bears the force of the extension component 2. On the one hand, the normal extension and contraction of the extension component 2 is ensured by the rotating roller 305 of the support component 3, and on the other hand, the strength of the main beam is improved, avoiding problems such as tearing of the main beam structure caused by the extension and contraction of the grab beam arm, and ensuring service life and stability of use.

[0048] (3) The sliding component 4 is used in conjunction with the rotating roller 305 to make the extension and retraction process smoother, and the hydraulic cylinder 202 provides the driving force for extension and retraction, thereby improving the speed and efficiency of length change.

Claims

1. A telescopic portal crane jib with self-adapting gate size, comprising a jib body (1), a positioning device (5) and a pinning device (6), characterized in that, The two ends of the grab beam body (1) are symmetrically provided with mounting cavities (101). Each mounting cavity (101) is slidably installed with a telescopic extension component (2) through a sliding component (4). Each mounting cavity (101) is provided with a support component (3) at its outlet. The support component (3) is fixedly engaged with the top of the grab beam body (1). The extension component (2) is slidably supported on the corresponding support component (3).

2. The telescopic gantry crane grab beam adaptable to gate size according to claim 1, characterized in that, The extension components (2) at both ends are symmetrically arranged about the middle position of the grab beam body (1), and the extension components (2) move synchronously.

3. The telescopic gantry crane grab beam adaptable to gate size according to claim 2, characterized in that, Each of the extension components (2) includes a support beam (201) sleeved in the mounting cavity (101). The support beam (201) slides axially with the corresponding mounting cavity (101) through the sliding component (4). A hydraulic cylinder (202) is provided in the mounting cavity (101). One end of the hydraulic cylinder (202) is fixed to the inner wall of the end of the mounting cavity (101), and the other end of the hydraulic cylinder (202) is fixed to the support beam (201) located at one end inside the mounting cavity (101).

4. The telescopic gantry crane grab beam adaptable to gate size according to claim 3, characterized in that, The mounting cavity (101) is coaxial with the grab beam body (1), the support beam (201) is coaxial with the mounting cavity (101), and the hydraulic cylinder (202) is coaxial with the support beam (201).

5. A telescopic gantry crane grab beam adaptable to gate size according to claim 4, characterized in that, The sliding assembly (4) includes rounded corner grooves (401) fixedly arranged at the four corners of the mounting cavity (101). The rounded corner grooves (401) all extend along the axial direction. The four corners of the support beam (201) and the four corners of the mounting cavity (101) are all set as rounded corner structures, and the four corners of the support beam (201) match the corresponding rounded corner grooves (401) to form sliding along the axial direction.

6. A telescopic gantry crane grab beam adaptable to gate size according to claim 5, characterized in that, The support assembly (3) includes a base plate (301) located below the outlet of the mounting cavity (101). The base plate (301) is in close contact with the bottom of the grab beam body (1). The base plate (301) is hoisted and fixed on the grab beam body (1) by a hoisting frame. The base plate (301) extends toward the side away from the mounting cavity (101). A sliding frame is provided on the top of one side of the extended side of the base plate (301). The support beam (201) slides and cooperates with the base plate (301) through the sliding frame and is supported on the base plate (301).

7. A telescopic gantry crane grab beam adaptable to gate size according to claim 6, characterized in that, The hoisting frame includes right-angled triangular frames (302) symmetrically arranged about the base plate (301). The right-angled triangular frames (302) are all vertically welded to both sides of the base plate (301). The top of the grab beam body (1) is provided with a top frame (303). The top of the right-angled triangular frame (302) corresponds to the two ends of the top frame (303), and the top of the right-angled triangular frame (302) is welded and fixed to the corresponding end of the top frame (303). The top frame (303) is supported on the top of the grab beam body (1) and welded and fixed.

8. A telescopic gantry crane grab beam adaptable to gate size according to claim 7, characterized in that, The sliding frame includes a mounting frame (304) located on the top of one side of the extension side of the base plate (301). The mounting frames (304) are arranged opposite each other and symmetrical about the middle position of the base plate (301). A number of rotating rollers (305) are rotatably mounted between the mounting frames (304). The support beam (201) is in contact with the rotating rollers (305), and the rotation direction of the rotating rollers (305) is tangent to the movement direction of the support beam (201).

9. A telescopic gantry crane grab beam adaptable to gate size according to claim 8, characterized in that, The support beam (201) is provided with positioning devices (5) on both sides of its end outside the mounting cavity (101). The positioning devices (5) are symmetrical about the support beam (201), and the support beam (201) is centered and limited in the door slot through the positioning devices (5).

10. A telescopic gantry crane grab beam adaptable to gate size according to claim 9, characterized in that, The support beam (201) is provided with a pin device (6) at the bottom of its end outside the mounting cavity (101).

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