Fabricated cement product self-weight clamp
By designing prefabricated cement products self-weight clamping tools, using the combined structure of the upper and lower cylinders, the clamping plate closure without electricity is achieved, and the forklift cargo forks is clamped, which solves the problem of expensive and high energy consumption of cement products handling equipment, and improves transportation flexibility and safety.
Patent Information
- Application Number
- CN202421850880.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-01
AI Technical Summary
In the prior art, the handling of cement products depends on driving and lifting, the equipment is expensive and energy-consuming, and it is difficult to achieve efficient handling on forklifts, which delays the construction period.
A prefabricated cement product self-weight clamp is designed, and a combination structure of upper oil cylinder and lower oil cylinder is adopted. Through the automatic hydraulic system, the clamp structure is closed by the self-weight of the spreader, clamp the forklift cargo forks, and transport it instead of driving.
It improves the transportation flexibility and safety of cement products, reduces equipment costs and energy consumption, and improves operating efficiency.
Smart Images
Figure CN223134051U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fixtures, in particular to a self-weight fixture for prefabricated cement products. Background Technique
[0002] There are many types of cement products, mainly including the following:
[0003] I. Cement bricks
[0004] Cement bricks are a commonly used type of cement product, mainly used for building walls, foundations, etc. They have good compressive strength and durability and are widely used in various construction projects;
[0005] II. Cement pipes
[0006] Cement pipes are used for conveying various liquids or gases and are commonly found in drainage, water conservancy, power and other projects. They have a strong structure, can resist pressure and water flow scouring, and have good durability and safety;
[0007] III. Cement boards
[0008] Cement boards are a flat type of cement product and are widely used in building parts such as walls, floors, and ceilings. They have excellent fire prevention, sound insulation, and heat insulation properties, and are also easy to construct and maintain.
[0009] Cement products are usually transported by a traveling crane with a fixture. Traveling cranes are expensive, have a lot of frame equipment, and the environment is complex. People cannot pass under the moving traveling crane. Traveling cranes are bulky and energy-consuming. Moreover, cement products are produced frequently and have a large number of handling times, consuming a lot of time in the transportation of cement products, delaying the construction period, and consuming a lot of time. Therefore, through technical improvement of the existing technology fixture, it can be assembled on a forklift, and the forklift is used to transport cement products to improve the operation flexibility. Content of the Utility Model
[0010] The purpose of the utility model is to provide a self-weight fixture for prefabricated cement products to solve the problems raised in the above background technique.
[0011] To achieve the above purpose, the utility model provides the following technical solutions:
[0012] A self-weight fixture for prefabricated cement products includes a self-weight fixture. A lifting rope is connected to the top of the self-weight fixture, and a lifting device that can be assembled with a forklift is connected to the lifting rope;
[0013] The lifting device includes a carrier, an upper oil cylinder, a lower oil cylinder, and an automatic hydraulic system. The carrier is provided with a jack, and the upper oil cylinder and the lower oil cylinder are respectively installed above and below the jack. The upper oil cylinder and the lower oil cylinder control the distance to clamp the forklift forks through the automatic hydraulic system.
[0014] As a further solution of the present utility model: The automatic hydraulic system includes a sub-cylinder, an upper oil circuit branch line, and a lower oil circuit branch line. The upper cylinder is connected to the upper port of the sub-cylinder through the upper oil circuit branch line, and the lower cylinder is connected to the lower port of the sub-cylinder through the lower oil circuit branch line.
[0015] As a further solution of the present utility model: An oil valve capable of controlling the flow of hydraulic oil in all lower cylinders is provided on the lower port.
[0016] As a further solution of the present utility model: The cylinder diameter of the upper cylinder is larger than that of the lower cylinder, and the telescopic distance of the upper cylinder for entering and discharging the same volume of hydraulic oil is smaller than that of the lower cylinder.
[0017] As a further solution of the present utility model: Two upper cylinders and two lower cylinders are respectively arranged in the jack, an upper clamping plate is arranged between the two upper cylinders, and a lower clamping plate is arranged between the two lower cylinders.
[0018] As a further solution of the present utility model: A counterbore located above the jack is provided in the carrier, and a spring fixed to the upper clamping plate is installed in the counterbore.
[0019] As a further solution of the present utility model: The self-weight fixture includes fork arms, a central shaft, a positioning pin, and clamping claws. The two fork arms are rotatably connected through the central shaft. Pin holes are provided on the two fork arms. The positioning pin passes through the pin holes to keep the fork arms in an open posture, and clamping claws are arranged at the ends of the fork arms.
[0020] Compared with the prior art, the beneficial effects of the present utility model are:
[0021] The self-weight fixture for precast cement products, through the design of large and small cylinders of the upper cylinder and the lower cylinder, driven by the automatic hydraulic system, without electricity, relies on the weight of its lifting device to realize the closing of the clamping plate structure to tightly hold the forklift forks, avoiding falling off during transportation, is an important connecting component between the fixture and the forklift, replaces the overhead crane for handling, and improves the operation flexibility. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic structural diagram of a self-weight fixture for precast cement products;
[0023] Figure 2 It is a schematic diagram of the automatic hydraulic system driving the upper cylinder and the lower cylinder to clamp in a self-weight fixture for precast cement products;
[0024] Figure 3 It is a schematic diagram of the automatic hydraulic system driving the upper cylinder and the lower cylinder to loosen in a self-weight fixture for precast cement products.
[0025] In the figure: 1. Fork arm; 2. Central axis; 3. Positioning pin; 4. Claw; 5. Suspension rope; 6. Carrier; 7. Upper oil cylinder; 8. Upper oil circuit branch line; 9. Sub-oil cylinder; 10. Lower oil cylinder; 11. Spring; 12. Upper port; 13. Lower port; 14. Oil valve; 15. Lower oil circuit branch line; 16. Lower clamping plate; 17. Counterbore; 18. Upper clamping plate. Detailed implementation manner
[0026] Please refer to Figures 1 to 3 , in the embodiment of the present utility model, an assembled self-weight fixture for cement products includes a self-weight fixture. A suspension rope 5 is connected to the top of the self-weight fixture, and the suspension rope 5 is connected to a lifting device that can be assembled with a forklift.
[0027] The lifting device includes a carrier 6, an upper oil cylinder 7, a lower oil cylinder 10 and an automatic hydraulic system. The carrier 6 is provided with an insertion hole. The upper oil cylinder 7 and the lower oil cylinder 10 are respectively installed above and below the insertion hole of the carrier 6. The upper oil cylinder 7 and the lower oil cylinder 10 control the distance to clamp the forklift fork through the automatic hydraulic system. The self-weight fixture is connected to the forklift fork through the lifting device to form a fixation between the self-weight fixture and the fork. The fork is inserted into the insertion hole. During the rising process of the fork, the fork squeezes the upper oil cylinder 7 to squeeze out the hydraulic oil in the upper oil cylinder 7, which flows to the lower oil cylinder 10. The hydraulic pressure in the lower oil cylinder 10 pushes the lower oil cylinder 10 to extend and contact the bottom of the fork, forming a clamping state to prevent the fork from detaching from the lifting device, improving the safety of the operation. The forklift lifts up to make the lifting device clamp the fork, and the self-weight fixture clamps the cement product for handling, which is convenient, simple and flexible in operation.
[0028] In a preferred implementation manner, the automatic hydraulic system includes a sub-oil cylinder 9, an upper oil circuit branch line 8 and a lower oil circuit branch line 15. The upper oil cylinder 7 is communicated with the upper port 12 of the sub-oil cylinder 9 through the upper oil circuit branch line 8. The lower oil cylinder 10 is communicated with the lower port 13 of the sub-oil cylinder 9 through the lower oil circuit branch line 15. The sub-oil cylinder 9 is an important component for storing oil and plays an important role during the oil change process. At the same time, it increases the capacity of the flowing hydraulic oil, enabling it to be used for a longer time.
[0029] In a preferred implementation manner, an oil valve 14 capable of controlling the flow of hydraulic oil in all the lower oil cylinders 10 is provided on the lower port 13. In the automatic hydraulic system, when the oil valve 14 is closed, the hydraulic oil is locked in the lower oil cylinder 10 to prevent the oil from flowing back and maintain the clamping action.
[0030] In a preferred embodiment, the cylinder diameter of the upper oil cylinder 7 is larger than that of the lower oil cylinder 10. For the same volume of hydraulic oil entering and discharging, the telescopic distance of the upper oil cylinder 7 is less than that of the lower oil cylinder 10, enabling the upper oil cylinder 7 to compress and push out a fixed volume of hydraulic oil in a short stroke. The fixed volume of hydraulic oil is input into the lower oil cylinder 10 in equal amounts, and the lower oil cylinder 10 is pushed out. Due to the difference in the oil chamber diameter, the lower oil cylinder 10 extends a longer distance, thereby clamping the bottom of the forklift fork and preventing the cement products from swinging due to inertia during transportation and causing detachment.
[0031] In a preferred embodiment, two upper oil cylinders 7 and two lower oil cylinders 10 are respectively arranged in the jacking holes. An upper clamping plate 18 is arranged between the two upper oil cylinders 7, and a lower clamping plate 16 is arranged between the two lower oil cylinders 10. The upper clamping plate 18 and the lower clamping plate 16 increase the contact area of the forklift fork. A counterbore 17 is arranged in the carrier 6 above the jacking hole, and a spring 11 fixed to the upper clamping plate 18 is installed in the counterbore 17. During the lowering process of the forklift fork, the fork is away from the upper clamping plate 18. Under the action of the spring 11, the upper clamping plate 18 moves downward to stretch and extend the upper oil cylinder 7. The upper oil cylinder 7 sucks hydraulic oil to cause the lower oil cylinder 10 to contract, leaving a larger space to pull out the fork.
[0032] In a preferred embodiment, the self-weight fixture includes fork arms 1, a central shaft 2, a positioning pin 3, and clamping jaws 4. The two fork arms 1 are rotatably connected through the central shaft 2. Pin holes are provided on the two fork arms 1. The positioning pin 3 passes through the pin holes to keep the fork arms 1 in an open posture. Clamping jaws 4 are arranged at the ends of the fork arms 1. The positioning pin 3 can be inserted to keep the fork arms 1 in an open posture. After the positioning pin 3 is pulled out, during the lifting process of the self-weight fixture, the clamping jaws 4 contract to clamp the cement products.
[0033] It should be noted that the above embodiments all belong to the same inventive concept of the utility model. The descriptions of the embodiments have their own emphases. For the parts not described in detail in individual embodiments, reference can be made to the descriptions in other embodiments.
[0034] The above embodiments only represent the implementation manners of the utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, without departing from the inventive concept of the utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.
Claims
1. An assembled cement product self-weight fixture, including a self-weight fixture, characterized in that, The top of the self-weight fixture is connected to a lifting rope (5), and the lifting rope (5) is connected to a lifting device that can be assembled with a forklift. The lifting device includes a carrier (6), an upper oil cylinder (7), a lower oil cylinder (10), and an automatic hydraulic system. The carrier (6) is provided with an insertion hole, and the upper oil cylinder (7) and the lower oil cylinder (10) are respectively installed above and below the insertion hole. The upper oil cylinder (7) and the lower oil cylinder (10) control the distance between them to clamp the forklift fork through the automatic hydraulic system.
2. The self-weight fixture for prefabricated cement products according to claim 1, characterized in that, The automatic hydraulic system includes a sub-oil cylinder (9), an upper oil circuit branch line (8), and a lower oil circuit branch line (15). The upper oil cylinder (7) is communicated with the upper port (12) of the sub-oil cylinder (9) through the upper oil circuit branch line (8), and the lower oil cylinder (10) is communicated with the lower port (13) of the sub-oil cylinder (9) through the lower oil circuit branch line (15).
3. The self-weight fixture for prefabricated cement products according to claim 2, characterized in that An oil valve (14) capable of controlling the flow of hydraulic oil of all the lower oil cylinders (10) is arranged on the lower port (13).
4. The self-weight fixture for prefabricated cement products according to claim 2 or 3, characterized in that, The cylinder diameter of the upper oil cylinder (7) is larger than that of the lower oil cylinder (10). When the same volume of hydraulic oil enters and exits, the telescopic distance of the upper oil cylinder (7) is less than that of the lower oil cylinder (10).
5. The self-weight fixture for prefabricated cement products according to claim 1, characterized in that, Two upper oil cylinders (7) and two lower oil cylinders (10) are respectively arranged in the insertion hole. An upper clamping plate (18) is arranged between the two upper oil cylinders (7), and a lower clamping plate (16) is arranged between the two lower oil cylinders (10).
6. The self-weight fixture for prefabricated cement products according to claim 5, characterized in that, A counterbore (17) is arranged in the carrier (6) above the insertion hole, and a spring (11) fixed to the upper clamping plate (18) is installed in the counterbore (17).
7. The self-weight fixture for prefabricated cement products according to claim 1, characterized in that, The self-weight fixture includes fork arms (1), a central shaft (2), a positioning pin (3), and clamping claws (4). The two fork arms (1) are rotatably connected through the central shaft (2). Pin holes are arranged on the two fork arms (1). The positioning pin (3) passes through the pin holes to keep the fork arms (1) in an open posture, and clamping claws (4) are arranged at the ends of the fork arms (1).