Concrete pumping jacking test device and test method thereof

Abstract

The invention provides a concrete pumping jacking test device and a test method thereof.The concrete pumping jacking test device comprises a support, a model pipe is arranged on the support and comprises a bottom steel pipe, a top steel pipe and a plurality of steel sleeves, the steel sleeves are arranged between the bottom steel pipe and the top steel pipe, a plurality of acrylic models are arranged in the model pipe, a hoop is arranged on the model pipe, and a rotating mechanism is arranged on the top steel pipe; the rotating mechanism comprises a plurality of sliding frames and a plurality of adjusting devices, and telescopic frames are arranged on the sliding frames. The model pipe and the steel sleeve are made of steel materials, the acrylic model is wrapped by the model pipe and the steel sleeve, so that the anti-pressure capacity of the acrylic model is improved, the acrylic model can bear pumping jacking pressure from bottom to top, and the acrylic model is prevented from being broken. The steel sleeve at the position is detached or slid, so that the acrylic model table at the position is exposed, and the acrylic model is made of a transparent material, so that a worker can intuitively monitor the hardening condition of concrete.

Description

Technical Field

[0001] The present invention relates to the field of bridge construction, and particularly to a concrete pumping and jacking test device and a test method thereof. Background Art

[0002] Concrete pumping and jacking in the inclined pipe is one of the most important links in the construction process of a concrete-filled steel tube arch bridge, directly affecting the construction quality of the bridge. Quality problems such as pipe blockage and voids are likely to occur during the concrete pumping and jacking process in the inclined pipe. Especially in harsh environments such as high altitudes and large temperature differences, the construction difficulty of concrete pumping and jacking in the steel tube is greater, and a test device needs to be made to monitor the construction quality of the concrete in the pipe.

[0003] Full-scale model tests carried out before the construction of concrete pumping and jacking in the pipe can effectively monitor the construction problems of the concrete in the pipe. When the steel tube is used as the test device, the state of the concrete in the tube cannot be directly observed, and the compactness of the interface between the concrete and the tube wall cannot be intuitively grasped after the concrete hardens; while acrylic is a transparent material, but due to its insufficient strength, the acrylic transparent material cannot withstand the pumping and jacking pressure from bottom to top and can only be poured from top to bottom, unable to accurately simulate the actual bridge construction conditions. In addition, it is difficult to vibrate and form the concrete after pouring in the inclined pipe. It is difficult and dangerous to manually insert the vibrating rod into the inclined pipe, with low work efficiency and easy to generate uneven vibration. Therefore, we propose a concrete pumping and jacking test device and a test method thereof to solve the above problems. Summary of the Invention

[0004] The present invention provides a concrete pumping and jacking test device and a test method thereof, which solve the problem that the compactness of the interface between the concrete and the steel tube wall cannot be intuitively grasped after the concrete hardens; while acrylic is a transparent material, but due to its insufficient strength, the acrylic transparent material cannot withstand the pumping and jacking pressure from bottom to top and can only be poured from top to bottom, unable to accurately simulate the actual bridge construction conditions.

[0005] Another problem solved by the present invention is: it is difficult to vibrate and form the concrete after pouring in the inclined pipe. It is difficult and dangerous to manually insert the vibrating rod into the inclined pipe, with low work efficiency and easy to generate uneven vibration.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: a concrete pumping and jacking test device and a test method thereof, including a bracket, a model pipe is provided on the bracket, the model pipe includes a bottom steel tube, a top steel tube and a plurality of steel sleeves, a plurality of steel sleeves are provided between the bottom steel tube and the top steel tube, a plurality of acrylic models are provided inside the model pipe, a hoop is provided on the model pipe, a rotating mechanism is provided on the top steel tube, the rotating mechanism includes a plurality of sliding frames and a plurality of adjusting devices, and a telescopic frame is provided on the sliding frame.

[0007] In a preferred embodiment, the acrylic model is a cylindrical structure, made of acrylic material. Connecting rings are provided at both ends of the acrylic model, and the acrylic model is connected end to end. The steel sleeve is a cylindrical structure, and the acrylic model abuts against the bottom steel pipe, the top steel pipe or inside the steel sleeve. An inlet pipe and an outlet pipe are provided on the bottom steel pipe, and stop valves are provided on both the inlet pipe and the outlet pipe.

[0008] In a preferred embodiment, the steel sleeve includes two arc-shaped sleeves that abut against each other, and the acrylic model abuts between the two arc-shaped sleeves. Connection plates are provided at both ends of the arc-shaped sleeves, side grooves are provided on the connection plates, and a plurality of handles are provided on the arc-shaped sleeves.

[0009] In a preferred embodiment, a plurality of arc-shaped grooves are provided on the top steel pipe, and a ring body is provided on the top steel pipe. The rotating mechanism includes a motor with a main gear installed on the top steel pipe, and a cover plate is provided on the ring body.

[0010] In a preferred embodiment, the sliding carriage includes a frame body with an arc-shaped groove at the bottom, and the ring body abuts against the arc-shaped groove. A horizontal groove is provided on one side of the frame body, a through groove is provided on the other side of the frame body, a telescopic frame is provided on the through groove, a rotating seat is provided on the frame body, and a runner is provided on the rotating seat.

[0011] In a preferred embodiment, the adjusting device includes an electric push rod and a second motor. A retaining piece is provided at one end of the electric push rod, a plurality of springs are provided on the retaining piece and connected to the second motor. A convex block is provided at the bottom of the second motor, which abuts against the horizontal groove. A driven gear is provided on the second motor, and the driven gear meshes with the main gear.

[0012] In a preferred embodiment, the telescopic frame includes three hollow frame bodies, namely a top frame body, a middle frame body and a bottom frame body. A vibrator is provided at the bottom of the bottom frame body, and the cable of the vibrator passes through the telescopic frame. The top frame body and the middle frame body are slidably connected, the middle frame body and the bottom frame body are slidably connected, a cord is provided on the bottom frame body, and the other end of the cord is wound around the runner.

[0013] In a preferred embodiment, the hoop includes a rotating ring and a clamping ring, which are rotatably connected. A sliding locking buckle is provided on the rotating ring, a plurality of adjusting holes are provided on the clamping ring, and the locking buckle is connected to the adjusting holes.

[0014] In a preferred embodiment, a sliding mechanism is provided on the hoop. The sliding mechanism includes a support frame connected to the clamping ring. A slider is provided at the bottom of the support frame, an inclined groove is provided on the support, and the slider abuts against the inclined groove and slides. A cylinder is provided at the bottom of the support frame and installed on the support.

[0015] A test method for a concrete pumping and jacking test device, characterized in that: S1. Preparation before the experiment: A plurality of acrylic models are connected end to end, the steel sleeve is sleeved on the acrylic model, the top acrylic model is connected to the top steel pipe, and the bottom acrylic model is connected to the bottom steel pipe. S2. Model pipe positioning: adjust the positions of multiple sliding mechanisms, and multiple clamps hold the bottom steel pipe, the top steel pipe and multiple steel sleeves; vibrator placement: turn the wheel to extend the telescopic frame; S3, model experiment: open the stop valve on the slurry inlet pipe, pump concrete from the bottom upward, and inject grout into the model pipe through the slurry inlet pipe; S4, vibration molding: drive the rotating mechanism to rotate the carriage, and at the same time drive the vibrator, slowly rotate the rotating wheel to lift the vibrator; S5. After the concrete is initially formed, open the clamp of the top steel pipe. After removing the top steel pipe, the clamp clamps the acrylic model on the top, and the concrete condition on the top is observed through the acrylic model on the top. S6. When viewing other segment models, open the clamp of the corresponding segment, disassemble or move the steel sleeve, and then clamp the acrylic model of the segment with the clamp of the segment to keep the steel sleeve away from the acrylic model of the segment; S7. After the experiment, the crane lifts the whole structure, loosens all the clamps, and removes the model tube of the outer layer of the acrylic model.

[0016] The beneficial effect of the present invention is that when concrete enters into multiple acrylic models from the bottom steel pipe, the model pipe and the steel sleeve are made of steel, and the model pipe and the steel sleeve wrap the acrylic model to increase the compressive resistance of the acrylic model, so that the acrylic model can withstand the pumping jacking pressure from bottom to top, avoiding the phenomenon that the acrylic model is not hard enough and cracked when directly used for pouring from bottom to top, and can accurately simulate the actual bridge construction conditions.

[0017] After the concrete hardens and the top steel pipe is removed, the compactness of the interface between the concrete and the pipe wall at the top position can be monitored first. The clamps at different positions can be opened to disconnect the clamps at that position from the steel sleeve. The steel sleeve at that position can be removed or slid to expose the acrylic model at that position. The acrylic model is made of transparent material, so that the staff can intuitively monitor the hardening of the concrete. The size of the clamp can be adjusted so that the clamp can clamp the acrylic model and the steel sleeve, so that the clamp can alternately support the acrylic model and the steel sleeve, so that during the entire pouring process, the overall structure can support the model pipe.

[0018] The structure of the driving adjustment device is used to adjust the connection between the slave gear and the main gear. When the vibrator at this position does not need to change its position, the adjustment device is disconnected from the rotating mechanism. When the vibrator at this position needs to change its position, the adjustment device is connected to the rotating mechanism. The rotating mechanism is driven to make the carriage rotate, so as to adjust the position of the vibrator. Each vibrator can be independently controlled without affecting each other. At the same time, the telescopic frame can be telescoped. The telescopic frame is made of steel structure and can be telescoped obliquely in the model tube, so that the overall mechanism can vibrate and form the concrete in the model tube in all directions. The overall structure vibrates evenly, avoiding the phenomena of difficult and dangerous operation and low work efficiency during manual vibration, and has great popularization value. Brief Description of the Drawings

[0019] The present invention will be further described below in conjunction with the drawings and embodiments; Figure 1 It is a side view of the overall structure of the present invention; Figure 2 It is a side view of the partial structure of the present invention; Figure 3 It is an axonometric view of the partial structure of the present invention; Figure 4 It is a top view of the partial structure of the present invention; Figure 5 It is an axonometric view of the carriage of the present invention; Figure 6 It is an axonometric view of the partial structure of the present invention; Figure 7 It is a side view of the partial structure of the present invention; Figure 8 It is a side view of the telescopic frame and the vibrator of the present invention; Figure 9 It is an exploded view of the partial structure where the steel sleeve is a cylinder of the present invention; Figure 10 It is an axonometric view of the partial structure of the present invention; Figure 11 It is an exploded view of the partial structure where the steel sleeve is two arc-shaped sleeves of the present invention; Figure 12 It is an axonometric exploded view of the present invention; In the figure: support 1; model pipe 2; bottom steel pipe 201; top steel pipe 202; arc groove 2021; ring body 2022; slurry inlet pipe 203; slurry outlet pipe 204; steel sleeve 3; arc-shaped sleeve 301; connecting plate 302; side groove 303; handle 304; semi-circular ring 305; flange ring 306; acrylic model 4; connecting ring 401; rotating mechanism 5; motor 501; main gear 502; sliding frame 6; frame body 601; arc groove 602; through groove 603; transverse groove 604; rotating seat 605; runner 606; adjusting device 7; electric push rod 701; retaining piece 702; spring 703; second motor 704; driven gear 705; telescopic frame 8; frame body 801; hoop 9; rotating ring 901; locking buckle 902; adjusting hole 903; hoop ring 904; vibrator 10; stop valve 11; sliding mechanism 13; support frame 1301; slider 1302; cylinder 1303. Detailed implementation method

[0020] Example 1: As Figures 1-12 shown in, a concrete pumping and jacking test device and its test method include a support 1, on which a model pipe 2 is provided. The model pipe 2 includes a bottom steel pipe 201, a top steel pipe 202 and a plurality of steel sleeves 3. A plurality of steel sleeves 3 are provided between the bottom steel pipe 201 and the top steel pipe 202. A plurality of acrylic models 4 are provided inside the model pipe 2. A hoop 9 is provided on the model pipe 2. A rotating mechanism 5 is provided on the top steel pipe 202. The rotating mechanism 5 includes a plurality of sliding frames 6 and a plurality of adjusting devices 7. A telescopic frame 8 is provided on the sliding frame 6. With this structure, when concrete enters into the plurality of acrylic models 4 from the bottom steel pipe 201, the model pipe 2 and the steel sleeves 3 are made of steel. The model pipe 2 and the steel sleeves 3 wrap the acrylic models 4 to increase the compressive capacity of the acrylic models 4, so that the acrylic models 4 can withstand the pumping and jacking pressure from bottom to top, avoiding the phenomenon that the acrylic models 4 are cracked due to insufficient hardness when directly used for pouring from bottom to top, and accurately simulating the actual bridge construction conditions.

[0021] After the concrete hardens, when the top steel pipe 202 at the top is disassembled, first, the compactness of the interface between the concrete and the pipe wall at the top position can be monitored. By opening the hoops 9 at different positions, the hoops 9 at this position are disengaged from the steel sleeves 3. By disassembling or sliding the steel sleeves 3 at this position, the acrylic models 4 at this position are exposed. The acrylic models 4 are made of transparent material, so that the staff can directly monitor the hardening situation of the concrete. The hoops 9 can be adjusted in size, so that the hoops 9 can clamp the acrylic models 4 and the steel sleeves 3, so that the hoops 9 can alternately support the acrylic models 4 and the steel sleeves 3, so that during the whole pouring process, the overall structure can support the model pipe 2.

[0022] The structure of the driving adjustment device 7 is used to adjust the connection between the slave gear 705 and the main gear 502. When the vibrator 10 at this position does not need to change its position, the adjustment device 7 is disconnected from the rotating mechanism 5. When the vibrator 10 at this position needs to change its position, the adjustment device 7 is connected to the rotating mechanism 5. The rotating mechanism 5 is driven to rotate the carriage 6 to adjust the position of the vibrator 10. Each vibrator 10 can be independently controlled without mutual influence. At the same time, the telescopic frame 8 can be telescoped. The telescopic frame 8 is made of steel structure and can be telescopically inclined in the model tube 2 so that the overall mechanism can vibrate and form the concrete in the model tube 2 in all directions. The overall structure vibrates evenly, avoiding the phenomena of difficult and dangerous operation and low work efficiency during manual vibration.

[0023] In a preferred solution, the acrylic model 4 is of a cylindrical structure and is made of acrylic material. Connection rings 401 are provided at both ends of the acrylic model 4, and the acrylic model 4 is connected end to end. The steel sleeve 3 is of a cylindrical structure. The acrylic model 4 abuts against the bottom steel pipe 201, the top steel pipe 202 or inside the steel sleeve 3. A slurry inlet pipe 203 and a slurry outlet pipe 204 are provided on the bottom steel pipe 201, and stop valves 11 are provided on both the slurry inlet pipe 203 and the slurry outlet pipe 204. With this structure, the stop valves 11 are used to control the inlet and outlet of the slurry. The connection rings 401 at both ends of the acrylic model 4 are inner rings, and the flange ring 306 or the semi-circular ring 305 of the steel sleeve 3 is an outer ring, so that the steel sleeve 3 can slide relative to the acrylic model 4.

[0024] When the overall model is relatively large, the pressure faced by the overall structure is relatively large, so that the pressure on the acrylic model 4 is relatively large. At this time, the steel sleeve 3 adopts an integral cylindrical structure. Flange rings 306 are provided at both ends of the steel sleeve 3, and the steel sleeve 3 is connected end to end through the flange rings 306. The steel sleeve 3 sleeves the acrylic model 4. Several steel sleeves 3 can share a hoop 9. By driving the cylinder 1303 of the sliding mechanism 13, the position of the hoop 9 can be changed. When it is necessary to monitor the concrete in the acrylic model 4 at different places, only need to remove the top steel pipe 202 at the top, then open the hoops 9 at different positions. The hoops 9 alternately hold the steel sleeve 3 and the acrylic model 4, and then make the steel sleeve 3 slide relative to the acrylic model 4, so as to monitor the concrete at different positions in the entire model tube 2.

[0025] In a preferred solution, the steel sleeve 3 includes two arc-shaped sleeves 301. The two arc-shaped sleeves 301 abut against each other, and the acrylic model 4 abuts between the two arc-shaped sleeves 301. Connecting plates 302 are provided at both ends of the arc-shaped sleeve 301, side grooves 303 are provided on the connecting plates 302, and a plurality of handles 304 are provided on the arc-shaped sleeve 301. With this structure, semi-circular rings 305 are provided at both ends of the arc-shaped sleeve 301. The handles 304 are used for the staff to disassemble, so that the two arc-shaped sleeves 301 can be easily separated. The two arc-shaped sleeves 301 are connected through the connecting plates 302, and adjacent two steel sleeves 3 are connected through the semi-circular rings 305.

[0026] When the overall model is small, the pressure on the overall structure is small, the pressure on the acrylic model 4 is small, the steel sleeve 3 adopts the structure of two arc-shaped sleeves 301, the two arc-shaped sleeves 301 are combined together, the cylinder 1303 of the sliding mechanism 13 stops working, and the position of the hoop 9 remains unchanged. After opening the hoop 9, the two arc-shaped sleeves 301 of the steel sleeve 3 can be disassembled to monitor the internal concrete situation.

[0027] In a preferred solution, a plurality of arc-shaped grooves 2021 are provided on the top steel pipe 202, a ring body 2022 is provided on the top steel pipe 202, the rotating mechanism 5 includes a motor 501, a main gear 502 is provided on the motor 501, the motor 501 is installed on the top steel pipe 202, and a cover plate is provided on the ring body 2022. With this structure, the telescopic frame 8 slides against the arc-shaped groove 2021, the driving motor 501 is used to rotate the main gear 502, so that the driven gear 705 rotates, so that the carriage 6 rotates, so as to adjust the position of the telescopic frame 8 and adjust the position of the vibrator 10.

[0028] In a preferred solution, the carriage 6 includes a frame body 601, an arc-shaped groove 602 is provided at the bottom of the frame body 601, the ring body 2022 abuts against the arc-shaped groove 602, a transverse groove 604 is provided on one side of the frame body 601, a through groove 603 is provided on the other side of the frame body 601, a telescopic frame 8 is provided on the through groove 603, and a rotating seat 605 is provided on the frame body 601, and a runner 606 is provided on the rotating seat 605. With this structure, the ring body 2022 abuts against the arc-shaped groove 602.

[0029] In a preferred solution, the adjusting device 7 includes an electric push rod 701 and a second motor 704. A retaining piece 702 is provided at one end of the electric push rod 701, a plurality of springs 703 are provided on the retaining piece 702, the springs 703 are connected to the second motor 704, a convex block is provided at the bottom of the second motor 704, the convex block abuts against the transverse groove 604, and a driven gear 705 is provided on the second motor 704, and the driven gear 705 meshes with the main gear 502. With this structure, the electric push rod 701 of the adjusting device 7 is driven to mesh the driven gear 705 on the second motor 704 with the main gear 502. When the vibrator 10 at this position needs to change its position, the adjusting device 7 is connected to the rotating mechanism 5. The rotating mechanism 5 is driven to rotate the carriage 6 to adjust the position of the vibrator 10, and each vibrator 10 can be independently controlled without mutual influence. When the position of the vibrator 10 does not need to be adjusted, the adjusting device 7 is disconnected from the rotating mechanism 5.

[0030] In a preferred embodiment, the telescopic frame 8 includes three hollow frames 801, namely a top frame, a middle frame, and a bottom frame. A vibrator 10 is provided at the bottom of the bottom frame. The cable of the vibrator 10 passes through the telescopic frame 8. The top frame and the middle frame are slidably connected, and the middle frame and the bottom frame are slidably connected. A cord is provided on the bottom frame, and the other end of the cord is wound around the runner 606. With this structure, a plurality of vertical grooves are provided in the top frame and the middle frame, and a plurality of horizontal protrusions are provided on both sides of the middle frame and the bottom frame. The horizontal protrusions of the middle frame abut against the top frame and slide thereon, and the horizontal protrusions of the bottom frame abut against the middle frame and slide thereon. The cross-sections of the top frame, the middle frame, and the bottom frame are all rectangular.

[0031] In a preferred embodiment, the hoop 9 includes a swivel ring 901 and a hoop 904. The swivel ring 901 and the hoop 904 are rotatably connected. A sliding locking buckle 902 is provided on the swivel ring 901, and a plurality of adjustment holes 903 are provided on the hoop 904. The locking buckle 902 is connected to the adjustment holes 903. With this structure, the swivel ring 901 and the hoop 904 are rotatably connected. One end of the locking buckle 902 is provided with a roller, and an arc-shaped roller groove is provided on the swivel ring 901. The roller abuts against the roller groove and slides thereon. A first threaded hole is provided on the locking buckle 902, and a plurality of second threaded holes are provided on the swivel ring 901. The locking buckle 902 is connected to the swivel ring 901 by bolts.

[0032] In a preferred embodiment, a sliding mechanism 13 is provided on the hoop 9. The sliding mechanism 13 includes a support frame 1301, which is connected to the hoop 904. A slider 1302 is provided at the bottom of the support frame 1301. An inclined groove is provided on the bracket 1, and the slider 1302 abuts against the inclined groove and slides thereon. A cylinder 1303 is provided at the bottom of the support frame 1301, and the cylinder 1303 is installed on the bracket 1. With this structure, several steel sleeves 3 can share one hoop 9. By driving the cylinder 1303 of the sliding mechanism 13, the position of the hoop 9 can be changed. When it is necessary to monitor the concrete in the acrylic model 4 at different places, only the top steel pipe 202 needs to be removed, and then the hoops 9 at different positions are opened. The hoops 9 alternately hold the steel sleeves 3 and the acrylic model 4, and then the steel sleeves 3 are slid relative to the acrylic model 4, so as to monitor the concrete at different positions in the entire model tube 2.

[0033] Embodiment 2: Further explanation in combination with Embodiment 1: When the overall model is relatively large, the overall structure faces greater pressure, resulting in greater pressure on the acrylic model 4. At this time, the steel sleeve 3 adopts an integral cylindrical structure. The steel sleeve 3 sleeves the acrylic model 4, and several steel sleeves 3 can share a hoop 9. By means of the cylinder 1303 of the driving sliding mechanism 13, the position of the hoop 9 is changed. When it is necessary to monitor the concrete in the acrylic model 4 at different locations, after only disassembling the top steel pipe 202, open the hoops 9 at different positions. The hoops 9 alternately hold the steel sleeve 3 and the acrylic model 4, and then make the steel sleeve 3 slide relative to the acrylic model 4, so as to monitor the concrete at different positions in the entire model pipe 2.

[0034] Embodiment 3: Further explanation in combination with Embodiment 1: When the overall model is relatively small, the overall structure faces less pressure, and the pressure on the acrylic model 4 is relatively small. The steel sleeve 3 adopts a structure of two arc sleeves 301. The two arc sleeves 301 are combined together, and the cylinder 1303 of the sliding mechanism 13 stops working without changing the position of the hoop 9. After opening the hoop 9, disassemble the two arc sleeves 301 of the steel sleeve 3, and the internal concrete situation can be monitored.

[0035] Furthermore, a pressure sensor is arranged in the acrylic model 4 at the bottom. When the pressure of the acrylic model 4 at the bottom is relatively small, during or just after grouting, without waiting for the concrete to harden, the steel sleeve 3 can be disassembled, and then the movement state of the concrete can be directly monitored to check whether there are quality problems such as pipe blockage and voids during the grouting process.

[0036] Embodiment 4: Further explanation in combination with Embodiments 1 to 3: A test method for a concrete pumping and jacking test device, characterized in that: S1. Preparation before the experiment: Multiple acrylic models 4 are connected end to end. The steel sleeve 3 is sleeved on the acrylic model 4. The acrylic model 4 at the top is connected to the top steel pipe 202, and the acrylic model 4 at the bottom is connected to the bottom steel pipe 201. S2. Positioning of the model pipe 2: Adjust the positions of multiple sliding mechanisms 13, and multiple hoops 9 hold the bottom steel pipe 201, the top steel pipe 202 and multiple steel sleeves 3; Placement of the vibrator 10: Rotate the runner 606 to extend the telescopic frame 8. S3. Model experiment: Open the stop valve 11 on the slurry inlet pipe 203, and the concrete is pumped from the bottom upwards, and grout is injected into the model pipe 2 through the slurry inlet pipe 203. S4. Vibration forming: Drive the rotating mechanism 5 to rotate the carriage 6, and at the same time drive the vibrator 10, and slowly rotate the runner 606 to lift the vibrator 10. After the concrete is initially formed, open the hoop 9 of the top steel pipe 202. After removing the top steel pipe 202, the hoop 9 clamps the acrylic model 4 at the top, and the concrete condition at the top can be observed through the acrylic model 4 at the top. S6. When observing the models of other segments, open the hoop 9 of the corresponding segment, remove or move the steel sleeve 3, and then the hoop 9 of this segment clamps the acrylic model 4 of this segment so that the steel sleeve 3 is away from the acrylic model 4 of this segment. S7. After the experiment, the crane lifts the overall structure, loosens all the hoops 9, and removes the model pipe 2 outside the acrylic model 4.

[0037] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A concrete pumping jacking test device, characterized by: The invention comprises a support (1), wherein a model tube (2) is provided on the support (1), the model tube (2) comprises a bottom steel tube (201), a top steel tube (202) and a plurality of steel sleeves (3), the plurality of steel sleeves (3) are provided between the bottom steel tube (201) and the top steel tube (202), a plurality of acrylic models (4) are provided inside the model tube (2), a clamp (9) is provided on the model tube (2), a rotating mechanism (5) is provided on the top steel tube (202), the rotating mechanism (5) comprises a plurality of slide frames (6) and a plurality of adjustment devices (7), and a telescopic frame (8) is provided on the slide frame (6).

2. A concrete pumping jacking test device according to claim 1, characterized in that: The acrylic model (4) is a cylindrical structure. The acrylic model (4) is made of acrylic material. Connecting rings (401) are provided at both ends of the acrylic model (4). The acrylic model (4) is connected end to end. The steel sleeve (3) is a cylindrical structure. The acrylic model (4) is against the bottom steel pipe (201), the top steel pipe (202) or the inside of the steel sleeve (3). The bottom steel pipe (201) is provided with a slurry inlet pipe (203) and a slurry outlet pipe (204). Both the slurry inlet pipe (203) and the slurry outlet pipe (204) are provided with stop valves (11).

3. A concrete pumping jacking test device according to claim 1, characterized in that: The steel sleeve (3) comprises two arc sleeves (301), the two arc sleeves (301) are pressed against each other, the acrylic model (4) is pressed against between the two arc sleeves (301), connecting plates (302) are provided at both ends of the arc sleeve (301), side grooves (303) are provided on the connecting plates (302), and a plurality of handles (304) are provided on the arc sleeve (301).

4. A concrete pumping jacking test device according to claim 1, characterized in that: A plurality of arc-shaped grooves (2021) are provided on the top steel pipe (202), a ring body (2022) is provided on the top steel pipe (202), the rotating mechanism (5) comprises a motor (501), a main gear (502) is provided on the motor (501), the motor (501) is mounted on the top steel pipe (202), and a cover plate is provided on the ring body (2022).

5. A concrete pumping jacking test device according to claim 1, characterized in that: The slide frame (6) comprises a frame body (601), an arc groove (602) is provided at the bottom of the frame body (601), a ring body (2022) is against the arc groove (602), a transverse groove (604) is provided on one side of the frame body (601), a through groove (603) is provided on the other side of the frame body (601), a telescopic frame (8) is provided on the through groove (603), a rotating seat (605) is provided on the frame body (601), and a rotating wheel (606) is provided on the rotating seat (605).

6. A concrete pumping jacking test device according to claim 1, characterized in that: The adjusting device (7) comprises an electric push rod (701) and a second motor (704); a baffle (702) is provided at one end of the electric push rod (701); a plurality of springs (703) are provided on the baffle (702); the springs (703) are connected to the second motor (704); a protrusion is provided at the bottom of the second motor (704); the protrusion abuts against the transverse groove (604); a slave gear (705) is provided on the second motor (704); and the slave gear (705) meshes with the main gear (502).

7. A concrete pumping jacking test device according to claim 1, characterized in that: The telescopic frame (8) comprises three hollow frames (801), the three frames (801) being a top frame, a middle frame and a bottom frame, a vibrator (10) being provided at the bottom of the bottom frame, a cable of the vibrator (10) passing through the telescopic frame (8), the top frame and the middle frame being slidably connected, the middle frame and the bottom frame being slidably connected, a wire rope being provided on the bottom frame, and the other end of the wire rope being wound around a rotating wheel (606).

8. The concrete pumping jacking test device according to claim 1 is characterized in that: The hoop (9) comprises a swivel (901) and a hoop ring (904), the swivel (901) and the hoop ring (904) are rotatably connected, a sliding locking buckle (902) is provided on the swivel (901), a plurality of adjustment holes (903) are provided on the hoop ring (904), and the locking buckle (902) is connected to the adjustment holes (903).

9. A concrete pumping jacking test device according to claim 1, characterized in that: The hoop (9) is provided with a sliding mechanism (13), the sliding mechanism (13) comprising a support frame (1301), the support frame (1301) being connected to the hoop ring (904), a slider (1302) being provided at the bottom of the support frame (1301), an inclined groove being provided on the bracket (1), the slider (1302) sliding against the inclined groove, and a cylinder (1303) being provided at the bottom of the support frame (1301), the cylinder (1303) being mounted on the bracket (1).

10. A test method for a concrete pumping jacking test device according to any one of claims 1 to 9, characterized in that: S1. Preparation before the experiment: multiple acrylic models (4) are connected end to end, the steel sleeve (3) is put on the acrylic model (4), the top acrylic model (4) is connected to the top steel pipe (202), and the bottom acrylic model (4) is connected to the bottom steel pipe (201). S2, positioning the model tube (2): adjusting the positions of the plurality of sliding mechanisms (13), and the plurality of hoops (9) holding the bottom steel tube (201), the top steel tube (202) and the plurality of steel sleeves (3); placing the vibrator (10): rotating the rotating wheel (606) to extend the telescopic frame (8); S3, model experiment: open the stop valve (11) on the slurry inlet pipe (203), pump concrete upward from the bottom, and inject into the model pipe (2) through the slurry inlet pipe (203); S4, vibration molding: driving the rotating mechanism (5) to rotate the carriage (6), and at the same time driving the vibrator (10) to slowly rotate the rotating wheel (606) to lift the vibrator (10); S5. After the concrete is initially formed, the clamp (9) of the top steel pipe (202) is opened. After the top steel pipe (202) is removed, the clamp (9) clamps the acrylic model (4) at the top, and the condition of the top concrete is observed through the acrylic model (4) at the top; S6. When viewing other segment models, open the clamp (9) of the corresponding segment, disassemble or move the steel sleeve (3), and then clamp the acrylic model (4) of the segment with the clamp (9) of the segment to keep the steel sleeve (3) away from the acrylic model (4) of the segment; S7. After the experiment is over, the whole structure is lifted by a crane, all the clamps (9) are loosened, and the model tube (2) on the outer layer of the acrylic model (4) is disassembled.

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