A square clamp device
By designing an improved square clamp device, the problem of insufficient adaptability of the shape and position of the support diagonal rod was solved, the lifting stability was improved and the cost was reduced, making it suitable for the manufacture of cap beams in bridge construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA RAILWAY CONSTRUCTION ENGINEERING GROUP
- Filing Date
- 2023-12-28
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, square clamps have problems such as insufficient adaptability of the shape of the supporting diagonal rods, insufficient adaptability of the upper and lower positions, poor lifting stability, and high cost of the lifting mechanism in bridge construction.
A square clamping device is designed, comprising a main body, a connecting plate, a docking component, a lifting module, an inner plate, and a friction component. The main body consists of two clamping arms, each of which includes an upper frame, a middle frame, and a lower frame. A semi-circular rotating fixing component is used to adapt to the inclined rod. The lifting module drives the clamping arms through a hydraulic cylinder and a clamp. The bifurcated structure lifts both clamping arms simultaneously, and an extension plate is provided to avoid interference.
It achieves a good fit between the square clamp and the diagonal bar, improves lifting stability, reduces lifting costs, simplifies the lifting mechanism, and provides more operating space.
Smart Images
Figure CN117966597B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of bridge construction, and specifically to a square clamp device. Background Technology
[0002] A bridge generally refers to a structure erected across rivers, lakes, or seas to allow vehicles and pedestrians to pass smoothly. To adapt to the rapidly developing modern transportation industry, the term "bridge" has also been extended to refer to structures built across mountains, challenging geological conditions, or to meet other transportation needs, making travel more convenient. During bridge construction, cap beams are used. A cap beam is a horizontal beam installed on top of the piers and piles to support, distribute, and transfer the load of the superstructure. It is also called a cap beam. It is a reinforced concrete or lightly reinforced concrete horizontal beam installed on the piers (abutments) or piles. Its main function is to support the superstructure of the bridge and transfer all the load to the substructure. Sometimes the piers are directly connected to the cap beam, and sometimes the piers are connected to the columns before the cap beam is connected. The use of clamps in the construction of cap beams is a support method. Clamps hold the piers and have the advantages of being lightweight, easy to process and manufacture, and low cost. In recent years, they have been widely used in bridge construction. However, due to the difficulty of structural stress analysis, they only appear in the form of circular clamps in the construction of bridges with circular piers. Square clamps have never been used.
[0003] In practical engineering work, the following problems exist:
[0004] I. Existing clamps have the requirement to support diagonal braces, but there is a problem of insufficient shape compatibility between the diagonal braces and the clamps. For example, when the lower end of the diagonal brace is connected to the clamp, there is interference in the shape matching.
[0005] Second, existing clamps have the need to support diagonal braces, but there is a problem of insufficient vertical positional compatibility between the diagonal brace and the clamp. For example, during the installation of the diagonal brace, due to the fixed position on the swing trajectory of its lower end and the matching problem with the clamp, the clamp needs to move up and down to better match the swing trajectory.
[0006] Third, in the prior art, when the clamp moves up and down as described above, it is easy to lift it up using the lifting mechanism, but there is a problem of poor stability when it is lowered.
[0007] Fourth, in the existing technology, when the lifting mechanism lifts the clamp, since the clamp often has two clamping arms, the lifting mechanism can only lift one of the clamping arms. Two lifting mechanisms are needed to lift both clamping arms at the same time, which results in high costs.
[0008] Fifth, in the existing technology, after the clamp holds the pier column, the space reserved at the lower end of the clamp for the lifting mechanism is small, which is not conducive to the erection of the lifting mechanism. Summary of the Invention
[0009] To overcome the above problems, the present invention proposes a solution that addresses multiple problems simultaneously.
[0010] The technical solution adopted by this invention to solve its technical problem is as follows: a square clamping device, comprising a main body, a connecting plate, a docking component, a lifting module, an inner plate, and a friction component; the main body is provided with an inner plate, and the friction component is connected to the main body through the inner plate; the main body includes two clamping arms, each clamping arm including an upper frame, a middle frame, and a lower frame, each of the upper frame, middle frame, and lower frame including a 90-degree bending structure; each clamping arm is provided with two connecting plates; the two clamping arms are connected by connecting components passing through the connecting plates;
[0011] A connecting member is provided on the middle frame. The connecting member can rotate relative to the middle frame. The connecting member has a semi-circular cross section. After the connecting member is rotated to a predetermined position relative to the middle frame, it can be fixed.
[0012] The lifting module can drive the main body to rise or fall. The lifting module includes a first clamp, a first rod, a second clamp, a second rod, a hydraulic cylinder, a piston rod, a threaded rod, a nut, a first connecting plate, a second connecting plate, and an extension support plate. The hydraulic cylinder is mounted below the main body, and the piston rod can extend and retract along the hydraulic cylinder. The upper end of the piston rod is connected to the extension support plate, and the threaded rod is provided above the end of the extension support plate. The first rod has a first connecting plate, and the second rod has a second connecting plate. The first and second connecting plates are sleeved on the threaded rod, with the first connecting plate positioned above the second connecting plate. The nut is sleeved on the threaded rod and positioned above the first connecting plate, and the rotation of the nut presses the first and second connecting plates together. The first clamp is provided at the end of the first rod, and the second clamp is provided at the end of the second rod.
[0013] During lifting, the first rod supports the lower frame of one clamping arm, the second rod supports the lower frame of the other clamping arm, the first clamp holds the lower frame of one clamping arm, and the second clamp holds the lower frame of the other clamping arm.
[0014] Preferably, both the first rod and the second rod are square rods.
[0015] Preferably, the number of friction elements is four.
[0016] Preferably, three inner plates are provided for each friction component.
[0017] Preferably, the connecting plate is provided with holes for the connecting parts to pass through.
[0018] Preferably, the upper surfaces of the first rod and the second rod are flush.
[0019] Preferably, the friction element has a square cross-section.
[0020] Preferably, the hydraulic cylinder is not located directly below the main body.
[0021] Preferably, the upper frame, middle frame, and lower frame each include two rods.
[0022] Preferably, the two rods are perpendicular to each other.
[0023] The beneficial effects of this invention are:
[0024] I. Regarding the first point raised in the background technology, the two clamping arms of the clamp are structurally refined. Each clamping arm includes an upper frame, a middle frame, and a lower frame. The middle frame is used to fix the semi-circular rotating fixing component. Through the rotation of the semi-circular rotating fixing component, its flat part can better adapt to the lower end face of the inclined rod. Since the lower end face of the inclined rod is approximately a point relative to the overall length of the inclined rod, the rotating fixing component can rotate to align after its lower end face contacts the flat part, thereby achieving the adaptation of the rotating fixing component and the inclined rod. After adaptation, the rotating fixing component is fixed on the middle frame, and the rotating fixing component is connected to the inclined rod by welding or by using a long bolt to pass through the rotating fixing component and connect to the inclined rod, thereby providing support for the lower end face of the inclined rod. In addition, the lower end of the inclined rod may optionally include an arc surface.
[0025] Second, regarding the second point raised in the background technology, a lifting mechanism is installed below the clamp, which can better adjust the vertical position of the clamp to better cooperate with the diagonal bar; when the lifting mechanism lifts, the two clamping arms are in a pre-connected but not compressed state, thereby avoiding too much friction between them and the pier column.
[0026] Thirdly, regarding the third point raised in the background technology, a clamp is set at the execution end of the lifting mechanism. The lower frame of each clamping arm can cooperate with the clamp. The clamp holds the lower frame, thereby driving the clamping arm more stably. When the clamp descends, it can also better restrain the clamp.
[0027] Fourthly, in response to the fourth point raised in the background technology, a bifurcated structure is set at the execution end of the lifting mechanism. The bifurcated structure lifts the two clamping arms simultaneously, avoiding the use of two sets of lifting mechanisms and reducing costs.
[0028] Fifth, in response to the fifth point raised in the background art, an extension plate is provided at the execution end of the lifting mechanism, a forked structure is connected to the extension plate, and the clamp is provided at the end of the forked structure, so that the lifting mechanism can be separated from the pier column to avoid interference. Attached Figure Description
[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0030] Figure 1 This is a three-dimensional view of the hoop of the present invention.
[0031] Figure 2This is an exploded three-dimensional view of the clamp of the present invention.
[0032] Figure 3 This is a top view of the clamp of the present invention.
[0033] Figure 4 A schematic diagram of an attachment provided on one side of the clamp of the present invention.
[0034] Figure 5 This is a schematic diagram of the cooperation between the clamp and the lifting mechanism of the present invention.
[0035] Figure 6 This is a schematic diagram of the main body of the lifting mechanism of the present invention.
[0036] Figure 7 This is a schematic diagram of the lifting mechanism actuator of the present invention.
[0037] The reference numerals in the figure are as follows:
[0038] 1. Main body, 2. Connecting plate, 3. Inner plate, 4. Enclosing outline, 5. Friction component, 6. Upper frame, 7. Middle frame, 8. Lower frame, 9. Connecting component, 10. First clamp, 11. First rod, 12. Second clamp, 13. Second rod, 14. Hydraulic cylinder, 15. Piston rod, 16. Threaded rod, 17. Nut, 18. First connecting plate, 19. Second connecting plate, 20. Connecting component, 21. Extension support plate. Detailed Implementation
[0039] As shown in the figure: A square clamping device includes a main body, a connecting plate, a docking component, a lifting module, an inner plate, and a friction component; the main body has an inner plate, and the friction component is connected to the main body through the inner plate; the main body includes two clamping arms, each clamping arm including an upper frame, a middle frame, and a lower frame, each of the upper frame, middle frame, and lower frame including a 90-degree bending structure; each clamping arm is provided with two connecting plates; the two clamping arms are connected by connecting components passing through the connecting plates;
[0040] A connecting member is provided on the middle frame. The connecting member can rotate relative to the middle frame. The connecting member has a semi-circular cross section. After the connecting member is rotated to a predetermined position relative to the middle frame, it can be fixed.
[0041] The lifting module can drive the main body to rise or fall. The lifting module includes a first clamp, a first rod, a second clamp, a second rod, a hydraulic cylinder, a piston rod, a threaded rod, a nut, a first connecting plate, a second connecting plate, and an extension support plate. The hydraulic cylinder is mounted below the main body, and the piston rod can extend and retract along the hydraulic cylinder. The upper end of the piston rod is connected to the extension support plate, and the threaded rod is provided above the end of the extension support plate. The first rod has a first connecting plate, and the second rod has a second connecting plate. The first and second connecting plates are sleeved on the threaded rod, with the first connecting plate positioned above the second connecting plate. The nut is sleeved on the threaded rod and positioned above the first connecting plate, and the rotation of the nut presses the first and second connecting plates together. The first clamp is provided at the end of the first rod, and the second clamp is provided at the end of the second rod.
[0042] During lifting, the first rod supports the lower frame of one clamping arm, the second rod supports the lower frame of the other clamping arm, the first clamp holds the lower frame of one clamping arm, and the second clamp holds the lower frame of the other clamping arm.
[0043] As shown in the figure: the first rod and the second rod are both square rods. There are four friction components. Each friction component has three inner plates. The connecting plate has holes for the connecting components to pass through. The upper surfaces of the first rod and the second rod are flush. The friction components have a square cross-section. The hydraulic cylinder is not located directly below the main body. The upper frame, middle frame, and lower frame each include two rods. The two rods are perpendicular to each other.
[0044] The above detailed description is a specific description of feasible embodiments of the present invention. These embodiments are not intended to limit the patent scope of the present invention. All equivalent implementations or modifications that do not depart from the present invention should be included in the patent scope of this case.
Claims
1. A square clamp device, characterized in that: The device includes a main body, connecting plates, docking parts, lifting modules, inner plates, and friction components. The main body contains an inner plate, and the friction components are connected to the main body via the inner plate. The main body includes two clamping arms, each comprising an upper frame, a middle frame, and a lower frame, all of which have a 90-degree bending structure. Each clamping arm has two connecting plates. The two clamping arms are connected by connecting parts passing through the connecting plates. A connecting member is provided on the middle frame. The connecting member can rotate relative to the middle frame. The connecting member has a semi-circular cross section. After the connecting member is rotated to a predetermined position relative to the middle frame, it can be fixed. The lifting module can drive the main body to rise or fall. The lifting module includes a first clamp, a first rod, a second clamp, a second rod, a hydraulic cylinder, a piston rod, a threaded rod, a nut, a first connecting plate, a second connecting plate, and an extension support plate. The hydraulic cylinder is mounted below the main body, and the piston rod can extend and retract along the hydraulic cylinder. The upper end of the piston rod is connected to the extension support plate, and the threaded rod is provided above the end of the extension support plate. The first rod has a first connecting plate, and the second rod has a second connecting plate. The first and second connecting plates are sleeved on the threaded rod, with the first connecting plate positioned above the second connecting plate. The nut is sleeved on the threaded rod and positioned above the first connecting plate, and the rotation of the nut presses the first and second connecting plates together. The first clamp is provided at the end of the first rod, and the second clamp is provided at the end of the second rod. During lifting, the first rod supports the lower frame of one clamping arm, the second rod supports the lower frame of another clamping arm, the first clamp holds the lower frame of one clamping arm, and the second clamp holds the lower frame of another clamping arm; the friction element has a square cross-section; the hydraulic cylinder is not located directly below the main body; the upper frame, middle frame, and lower frame each include two rods; the two rods are perpendicular to each other; the upper surfaces of the first rod and the second rod are flush.
2. The square clamp device according to claim 1, characterized in that: Both the first and second poles are square poles.
3. A square clamp device according to claim 1, characterized in that: The number of friction components is four.
4. A square clamp device according to claim 3, characterized in that: Each friction component has three inner plates.
5. A square clamp device according to claim 1, characterized in that: The connecting plate has holes for the connecting parts to pass through.