A large-tonnage static load counterforce device

Abstract

This application relates to the field of pile measurement technology, and in particular to a large-tonnage static load reaction device, including a blasting cylinder, an anti-gravity block, and protective rings. The blasting cylinder is disposed between the pile and the anti-gravity block. Multiple protective rings are disposed, and the multiple protective rings are stacked. A connecting structure is provided between two adjacent protective rings. The protective rings are sleeved on the outside of the pile and the anti-gravity block, and a slide rail is provided on the inner wall of the protective ring. The slide rail is vertical. The anti-gravity block is connected to a slider, and the slider is slidably connected in the slide rail, which achieves the effect of making the static and dynamic method of pile bearing capacity measurement smoother.

Description

Technical Field

[0001] This application relates to the field of pile measurement technology, and in particular to a large-tonnage static load reaction device. Background Technology

[0002] The static-dynamic method is a method for measuring the bearing capacity of piles under large strain. It uses a special loading device to generate high pressure on the pile top during the upward movement of a counterweight block (5% to 10% of the static load in the test), which slowly pushes the pile into the ground. Pressure sensors and laser controllers installed on the pile top are used to measure the changes in compressive stress on the pile top and the displacement of the pile throughout the test.

[0003] Most existing devices for measuring pile bearing capacity using static and dynamic methods include a protective tube fitted around the outside of the pile and a counterweight block. The counterweight block is located inside the protective tube and above the pile. An explosive chamber is provided between the counterweight block and the pile support, and explosives are placed inside the explosive chamber. When the explosives detonate, the counterweight block moves upward.

[0004] To reduce friction between the existing counterweight block and the protective pipe, a large gap is usually left between the protective pipe and the counterweight block. This causes the counterweight block to tilt during movement, which may damage the pile. Utility Model Content

[0005] This application provides a large-tonnage static load reaction device to facilitate the measurement of pile bearing capacity using the static and dynamic method.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A large-tonnage static load reaction device includes a blasting cylinder, an anti-gravity block, and protective rings. The blasting cylinder is disposed between the pile and the anti-gravity block. Multiple protective rings are disposed, and the multiple protective rings are stacked. A connecting structure is provided between two adjacent protective rings. The protective rings are sleeved on the outside of the pile and the anti-gravity block. A slide rail is provided on the inner wall of the protective rings. The slide rail is vertical. The anti-gravity block is connected to a slider, and the slider is slidably connected in the slide rail.

[0008] By adopting the above scheme, when testing the bearing capacity of the pile, explosives are placed inside the blasting chamber, a protective ring is placed on the outside of the pile, and multiple protective rings are stacked and connected by a connecting structure. Then, an anti-gravity block is placed inside the protective ring above it, and a slider is slid into the slide rail, so that the anti-gravity block is pressed on top of the blasting cylinder. The explosives are then detonated. The impact force on the pile is calculated by detecting the upward movement distance of the anti-gravity block through a detection structure, and the load-bearing capacity of the pile is detected by detecting the downward movement distance of the pile. The slider moves within the slide rail, making it less likely for the anti-gravity block to tilt during its upward movement, thus making the test results more accurate.

[0009] Optionally, the connection structure includes a locking pin and a locking block. A locking groove is formed on the upper surface of the protective ring, and the locking block is fixedly connected to the lower surface of the protective ring. A pin groove is formed in the locking groove, and the direction of the pin groove is perpendicular to the locking groove. The locking pin is slidably connected in the pin groove. A pin spring is sleeved on the outside of the locking pin. One end of the pin spring is fixedly connected to the locking pin, and the other end of the pin spring is fixedly connected to the inner wall of the pin groove. A locking groove is formed on the surface of the locking block. When the two protective rings are connected, the locking block is inserted into the locking groove, and one end of the locking pin is inserted into the locking groove.

[0010] By adopting the above scheme, when connecting two protective rings, the snap-fit ​​block of one protective ring is inserted into the snap-fit ​​groove of the other protective ring, and the snap pin is inserted into the groove, thereby achieving a fixed connection between the two protective rings.

[0011] Optionally, the protective ring has a connecting hole parallel to the axis of the protective ring, and the connecting hole is connected to the end of the pin groove away from the locking groove. When two adjacent protective rings are connected, the axes of the connecting holes of the two protective rings are the same, and the end of the locking pin near the connecting hole is sloped with the slope facing upward. When the pin spring is in the normal state, one end of the locking pin is inserted into the connecting hole. The connecting structure includes a fixing rod that can be inserted into the connecting hole. When the fixing rod is inserted into the connecting hole, one end of the locking pin is inserted into the locking groove.

[0012] By adopting the above method, the fixing rod is inserted into the connecting hole, so that the fixing rod contacts the inclined surface of the locking pin, thereby pressing the locking pin into the slot, thus connecting multiple protective rings. When it is necessary to remove the protective ring, simply remove the fixing rod, the pin spring returns and causes the locking pin to slide out in the slot, and then the protective ring can be removed.

[0013] Optionally, the slide rail has an inclined surface at one end, and when the slider contacts the inclined surface, the slider slides into the slide rail along the inclined surface.

[0014] By adopting the above solution, it becomes easier for operators to slide the slider into the guide rail.

[0015] Optionally, the slider is connected to a roller, and when the slider slides into the slide rail, the roller rolls along the slide rail.

[0016] By adopting the above scheme, the friction between the slider and the slide rail is reduced, thereby reducing the energy loss caused by friction and making the load-bearing capacity of the pile more accurate.

[0017] Optionally, an insertion block is fixedly provided on the lower surface of the anti-gravity block, and the insertion block is inserted into the blasting cylinder.

[0018] By adopting the above scheme, the blasting cylinder can form a sealed space as much as possible, and the energy generated by the blast can be converted into the upward force of the anti-gravity block as much as possible. Furthermore, the sliding of the insertion block inside the blasting cylinder can further restrict the movement direction of the anti-gravity block, so that the anti-gravity block can move vertically upward as much as possible.

[0019] Optionally, the upper surface of the protective ring is provided with a circular slot, and the lower surface of the protective ring is provided with a ring-shaped insertion ring. When the two protective rings are connected, the insertion ring is inserted into the slot.

[0020] By adopting the above solution, the connection between multiple protective rings is made more secure.

[0021] In summary, this application has the following technical effects:

[0022] 1. By setting up a slide rail and a slider, the movement direction of the anti-gravity block is restricted, so that the anti-gravity block can only slide in the vertical direction;

[0023] 2. By setting multiple protective rings and connecting them through a connecting structure, it is more convenient for operators to install the anti-gravity device;

[0024] 3. The addition of a fixing rod makes it easier to connect and disassemble multiple protective rings. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of the overall structure of this application;

[0026] Figure 2 This application is intended to emphasize a portion of the structural diagram at the slide rail;

[0027] Figure 3 This application is intended to emphasize the partial structural diagram of the connection between the two protective rings;

[0028] Figure 4 This application is intended to emphasize the partial structural cross-sectional view at the connection structure;

[0029] Figure 5 This application is intended to emphasize the partial structural cross-sectional view at the insertion block.

[0030] In the diagram, 1. Explosion cylinder; 2. Anti-gravity block; 21. Slider; 211. Roller; 22. Insertion block; 3. Protective ring; 31. Slide rail; 32. Snap-fit ​​groove; 33. Connecting hole; 34. Slot; 35. Insertion ring; 36. Pin groove; 4. Connecting structure; 41. Snap pin; 411. Pin spring; 42. Snap-fit ​​block; 421. Snap groove; 43. Fixing rod; 5. Pile body. Detailed Implementation

[0031] The present application will be further described in detail below with reference to the accompanying drawings.

[0032] Reference Figure 1 A large-tonnage static load reaction device includes a blasting cylinder 1, an anti-gravity block 2, and a protective ring 3. The blasting cylinder 1 is disposed between the pile body 5 and the anti-gravity block 2. Multiple protective rings 3 are disposed, and multiple protective rings 3 are stacked. A connecting structure 4 is disposed between two adjacent protective rings 3. The protective ring 3 is sleeved on the outside of the pile body 5 and the anti-gravity block 2. A slide rail 31 is disposed on the inner wall of the protective ring 3, and the slide rail 31 is vertical. The anti-gravity block 2 is connected to a slider 21, and the slider 21 is slidably connected in the slide rail 31. During the load-bearing capacity test of pile 5, explosives are placed inside the blast chamber, protective rings 3 are placed on the outside of pile 5, and multiple protective rings 3 are stacked and connected by connecting structure 4. Then, anti-gravity block 2 is placed inside protective ring 3 above it, and slider 21 is slid into slide rail 31, so that anti-gravity block 2 is pressed on top of blasting cylinder 1. Then, the explosives are detonated, and the impact force on pile 5 is calculated by detecting the upward movement distance of anti-gravity block 2 through the detection structure. The load-bearing capacity of pile 5 is detected by detecting the downward movement distance of pile 5. The movement of slider 21 within slide rail 31 makes it less likely for anti-gravity block 2 to tilt during upward movement, making the test results more accurate.

[0033] Reference Figure 4 The connecting structure 4 includes a locking pin 41 and a locking block 42. A locking groove 32 is formed on the upper surface of the protective ring 3. The locking block 42 is fixedly connected to the lower surface of the protective ring 3. A pin groove 36 is formed within the locking groove 32, and the direction of the pin groove 36 is perpendicular to the locking groove 32. The locking pin 41 is slidably connected within the pin groove 36. A pin spring 411 is sleeved on the outside of the locking pin 41. One end of the pin spring 411 is fixedly connected to the locking pin 41, and the other end is fixedly connected to the inner wall of the pin groove 36. A locking groove 421 is formed on the surface of the locking block 42. When two protective rings 3 are connected, the locking block 42 is inserted into the locking groove 32 of the other protective ring 3, and one end of the locking pin 41 is inserted into the locking groove 421, thereby achieving a fixed connection between the two protective rings 3.

[0034] Reference Figure 4The protective ring 3 has a connecting hole 33, which is parallel to the axis of the protective ring 3. The connecting hole 33 is connected to the end of the pin groove 36 away from the snap-fit ​​groove 32. When two adjacent protective rings 3 are connected, the axes of the connecting holes 33 of the two protective rings 3 are the same. The end of the snap-fit ​​pin 41 near the connecting hole 33 is sloped and the slope is upward. When the pin spring 411 is in the normal state, one end of the snap-fit ​​pin 41 is inserted into the connecting hole 33. The connecting structure 4 includes a fixing rod 43, which can be inserted into the connecting hole 33. When the fixing rod 43 is inserted into the connecting hole 33, one end of the snap-fit ​​pin 41 is inserted into the snap-fit ​​groove 421. Insert the fixing rod 43 into the connecting hole 33 so that the fixing rod 43 contacts the inclined surface of the locking pin 41, thereby pressing the locking pin 41 into the locking groove 421, thereby connecting multiple protective rings 3. When it is necessary to remove the protective ring 3, simply remove the fixing rod 43, and the pin spring 411 will rebound to make the locking pin 41 slide out in the locking groove 421, and then the protective ring 3 can be removed.

[0035] Reference Figure 2 and Figure 3 The slide rail 31 has an inclined surface at its upper end. When the slider 21 contacts the inclined surface, it slides into the slide rail 31. A roller 211 is connected to the slider 21. When the slider 21 slides into the slide rail 31, the roller 211 rolls along the slide rail 31. The roller 211 reduces friction between the slider 21 and the slide rail 31, thereby reducing energy loss due to friction and making the load-bearing capacity detection of the pile 5 more accurate. A circular slot 34 is provided on the upper surface of the protective ring 3, and a ring-shaped insertion ring 35 is provided on the lower surface of the protective ring 3. When two protective rings 3 are connected, the insertion ring 35 is inserted into the slot 34, making the connection of multiple protective rings 3 more secure.

[0036] Reference Figure 5 An insertion block 22 is fixedly installed on the lower surface of the anti-gravity block 2, and the insertion block 22 is inserted into the blasting cylinder 1. This makes the blasting cylinder 1 form a sealed space as much as possible, and the energy generated by the explosion is converted into the upward force of the anti-gravity block 2 as much as possible. Furthermore, the sliding of the insertion block 22 in the blasting cylinder 1 can further restrict the movement direction of the anti-gravity block 2, so that the anti-gravity block 2 moves as vertically upward as possible.

[0037] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A large tonnage static load reaction device, characterized by: It includes a blasting cylinder (1), an anti-gravity block (2), and a protective ring (3). The blasting cylinder (1) is set between the pile body (5) and the anti-gravity block (2). Multiple protective rings (3) are set, and multiple protective rings (3) are stacked. A connecting structure (4) is set between two adjacent protective rings (3). The protective ring (3) is sleeved on the outside of the pile body (5) and the anti-gravity block (2). A slide rail (31) is set on the inner wall of the protective ring (3). The slide rail (31) is vertical. The anti-gravity block (2) is connected to a slider (21). The slider (21) is slidably connected in the slide rail (31).

2. A large-tonnage static load counterforce device according to claim 1, characterized in that: The connection structure (4) includes a locking pin (41) and a locking block (42). A locking groove (32) is provided on the upper surface of the protective ring (3). The locking block (42) is fixedly connected to the lower surface of the protective ring (3). A pin groove (36) is provided in the locking groove (32), and the direction of the pin groove (36) is perpendicular to the locking groove (32). The locking pin (41) is slidably connected in the pin groove (36). A pin spring (411) is sleeved on the outside of the locking pin (41). One end of the pin spring (411) is fixedly connected to the locking pin (41), and the other end of the pin spring (411) is fixedly connected to the inner wall of the pin groove (36). A locking groove (421) is provided on the surface of the locking block (42). When the two protective rings (3) are connected, the locking block (42) is inserted into the locking groove (32), and one end of the locking pin (41) is inserted into the locking groove (421).

3. A large tonnage static load reaction device according to claim 2, characterized in that: The protective ring (3) has a connecting hole (33) which is parallel to the axis of the protective ring (3). The connecting hole (33) is connected to the end of the pin groove (36) away from the snap-fit ​​groove (32). When two adjacent protective rings (3) are connected, the axes of the connecting holes (33) of the two protective rings (3) are the same. The end of the snap-fit ​​pin (41) near the connecting hole (33) is sloped and the slope is upward. When the pin spring (411) is in normal state, one end of the snap-fit ​​pin (41) is inserted into the connecting hole (33). The connecting structure (4) includes a fixing rod (43). The fixing rod (43) can be inserted into the connecting hole (33). When the fixing rod (43) is inserted into the connecting hole (33), one end of the snap-fit ​​pin (41) is inserted into the snap-fit ​​groove (421).

4. A large tonnage static load reaction device according to claim 1, characterized in that: The slide rail (31) has an inclined surface at the upper end. When the slider (21) contacts the inclined surface, the slider (21) slides into the slide rail (31) along the inclined surface.

5. A large tonnage static load reaction device according to claim 1, characterized in that: The slider (21) is connected to a roller (211). When the slider (21) slides into the slide rail (31), the roller (211) rolls along the slide rail (31).

6. A large tonnage static load reaction device according to claim 1, characterized in that: An insertion block (22) is fixedly installed on the lower surface of the anti-gravity block (2), and the insertion block (22) is inserted into the blasting cylinder (1).

7. A large tonnage static load reaction device according to claim 1, characterized in that: The upper surface of the protective ring (3) is provided with a circular slot (34), and the lower surface of the protective ring (3) is provided with a ring-shaped insertion ring (35). When the two protective rings (3) are connected, the insertion ring (35) is inserted into the slot (34).

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