Concrete slump detection device
By designing a concrete slump detection device including an outer sleeve, annular top plate, a stroke device and a supplementary device, the automatic replenishment of concrete is achieved, solving the problem of concrete adhesion in traditional detection devices that cannot fall, and improving the accuracy of experimental data.
Patent Information
- Application Number
- CN202411878553.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-03-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In traditional concrete slump detection devices, some concrete adheres to the inner wall of the conical barrel and cannot fall normally, resulting in a decrease in the accuracy of the experimental data.
A concrete slump detection device is designed, including an outer sleeve, annular top plate, a stroke device and a supplementary device. The traction action of the limit slider drives the rotating arm downward, so that the pressing rod squeezes the concrete inside the stroke sleeve, and automatically replenishes the concrete through replenishment holes and anti-fall nets.
It effectively solves the problem that concrete adheres to the inner wall and cannot fall, improves the accuracy of experimental data, and ensures the accuracy of concrete slump detection.
Smart Images
Figure CN119619474A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of concrete detection, and in particular to a concrete slump detection device. Background Art
[0002] The slump of concrete is one of the important indicators of concrete, which is directly or indirectly related to the raw material ratio, water content, weighing deviation, amount of admixture and temperature of concrete. In order to obtain the slump of concrete, a concrete slump detection device is used. The traditional concrete detection device consists of a conical barrel with a hole on the top. When in use, concrete is injected into the interior of the conical barrel, and the concrete is compacted by knocking. Then the conical barrel is directly filled with gas, and the concrete inside falls off from the inside of the conical barrel under the action of gravity and collapses at the same time. The experimenter calculates the slump of concrete by the distance the concrete diffuses outward after the collapse stabilizes. In this process, part of the concrete cannot fall off but adheres to the inside of the conical barrel, resulting in errors in the final slump of concrete. In this regard, the present application document proposes a concrete slump detection device to solve the above-mentioned problems. Summary of the invention
[0003] The present application proposes a concrete slump detection device, which has the advantage of automatically replenishing concrete that is attached to the inside of a conical barrel and cannot fall off, so as to solve the problem of reduced experimental accuracy due to concrete adhering to the inner wall of the conical barrel.
[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a concrete slump detection device, comprising an outer sleeve, an annular top plate is fixedly installed on the outer surface of the outer sleeve near the top, travel holes are opened on the top of the annular top plate near the two sides, side ears are fixedly installed on both sides of the outer surface of the annular top plate, and the travel holes limit the travel device so that the travel device can only move in the vertical direction.
[0005] Specifically, a pressing device is fixedly installed on the top of the side ear by means of bolt connection, a stroke device is nested inside the outer sleeve, a supplementing device is placed on the top of the stroke device, an annular protrusion is provided on the outer surface of the outer sleeve near the bottom, a mounting groove is provided at the bottom of the annular protrusion, the mounting grooves are distributed in a circular array, a bending device is movably installed inside the mounting groove, the mounting groove is inclined inward, and the bending device will contact the fallen stroke device after being extended.
[0006] Furthermore, the pressing device includes a column and a rotating seat, a rotating arm is movably sleeved on one side of the column near the top, a strip hole is opened on the top of the rotating arm, side sliding grooves are arranged on both sides of the inner wall of the strip hole, and the front end of the rotating arm is connected to the supplementing device.
[0007] Specifically, a rotating hole is provided at one end of the rotating seat, and the rotating hole is nested with the stroke device. A telescopic arm is movably installed inside the rotating seat, and limit sliders are fixedly installed on both sides of the telescopic arm near the front end. The limit slider is movably installed inside the side slide groove, and the limit slider can slide along the extension direction of the side slide groove to adjust the position, and the limit slider serves as a fulcrum of the rotating arm.
[0008] Specifically, a first threaded column is disposed on the top of the rotating seat, and a first fastening bolt is disposed inside the first threaded column through a threaded sleeve.
[0009] Specifically, after the first fastening bolt is tightened, the front end of the first fastening bolt contacts the telescopic arm, thereby achieving a fixing effect on the telescopic arm.
[0010] Furthermore, the stroke device includes a material storage sleeve, a buffer rubber ring is provided at the bottom of the material storage sleeve, a mounting top plate is fixedly installed on the outer surface of the material storage sleeve near the top, a stroke rod is fixedly installed on the bottom of the mounting top plate near the two sides, and the stroke rod is sleeved inside the stroke hole.
[0011] Specifically, an adjusting bolt is sleeved inside the travel rod by means of threaded fitting, a balancing spring is clamped at one end of the adjusting bolt, the top end of the balancing spring is fixedly connected to the bottom of the annular top plate, and the balancing spring itself stores elastic force to balance the weight of the travel device, thereby ensuring that the travel device will not fall out of the outer sleeve in the initial state.
[0012] Specifically, the elastic force of the balance spring in the initial state can be adjusted by rotating the adjusting bolt.
[0013] Specifically, a mounting seat is fixedly installed on the top of the mounting top plate at a position corresponding to the travel rod, a second threaded column is fixedly installed on one side of the mounting seat, the second threaded column is movably mounted on the rotating hole, a second fastening bolt is mounted inside the second threaded column by threaded cooperation, and the second fastening bolt fixes the rotating hole after being tightened.
[0014] Furthermore, the replenishing device includes a replenishing bin in which concrete for replenishment is stored.
[0015] Specifically, a contact plate is fixedly installed on the outer surface of the replenishing bin near the top, the replenishing bin is placed inside the material storage sleeve, and the bottom of the contact plate contacts the top of the mounting top plate. A replenishing hole is opened at the bottom of the replenishing bin, and an anti-falling seat is arranged above the replenishing hole. The anti-falling seat is in a truncated cone shape to limit the falling of concrete under the action of gravity.
[0016] Specifically, an anti-falling net is fixedly installed inside the supplementary hole, and together with the anti-falling seat, it realizes the function of blocking the material.
[0017] Specifically, a travel sleeve is fixedly installed on the top of the replenishing bin, and the travel sleeve is connected to the inner cavity of the replenishing bin. A pressure rod is movably installed inside the travel sleeve. Connecting shaft seats are provided on both sides of the pressure rod near the top. The connecting shaft seat is movably sleeved on the front end of the rotating arm. When the pressure rod falls, the concrete inside the replenishing bin will be squeezed and made to fall through the replenishing hole and the anti-falling net.
[0018] Furthermore, the bending device includes a connecting rod, which passes through the top of the mounting groove, and the top of the connecting rod is clamped with an energy storage spring, and the bottom of the energy storage spring is clamped with the top of the annular protrusion, and the top of the connecting rod is fixedly installed with a connecting plate, and the bottom of the connecting plate is fixedly installed with a bending plate, and the bottom of the inner side of the bending plate is set to an arc shape. After the bending plate is extended and contacts with the buffer rubber ring, the buffer rubber ring will bend inward due to the arc shape of the bottom of the inner side of the bending plate.
[0019] Furthermore, the energy storage spring is in a stretched state in an initial state, and the connecting piece and the bending piece are completely located inside the mounting groove.
[0020] This application has the following beneficial effects.
[0021] When conducting a concrete collapse experiment, some concrete will adhere to the inner wall of the collapse sleeve and fail to fall normally, affecting the accuracy of the data obtained from the experiment of the device. The device involved in this application document causes gravity to increase due to the adhesion of concrete to the storage sleeve, resulting in a change in height. The traction of the limit slider drives the rotating arm downward, causing the pressure rod to squeeze into the interior of the stroke sleeve, so that the concrete is discharged through the supplementary hole and the anti-fall-off seat, thereby achieving a supplementary effect and ensuring the accuracy of the final experimental data. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.
[0023] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which: Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a cross-sectional view of the structure of the present invention; Figure 3 This is a disassembled diagram of the pressing device of the structure of the present invention; Figure 4 It is a cross-sectional view of the pressing device of the structure of the present invention; Figure 5 This is a diagram of the pressing device of the structure of the present invention; Figure 6 It is a structural stroke device diagram of the present invention; Figure 7 It is a cross-sectional view of the structural stroke device of the present invention; Figure 8 It is a diagram to supplement the structure of the present invention; Fig. 9 It is a cross-sectional view of the structural supplement device of the present invention; Fig.10 This is a diagram of the structural bending device of the present invention.
[0024] In the figure; 1, outer sleeve; 2, annular top plate; 3, travel hole; 4, side ear; 5, pressing device; 51, column; 52, rotating seat; 53, rotating arm; 54, strip hole; 55, side slide groove; 56, rotating hole; 57, telescopic arm; 58, limit slider; 59, first threaded column; 501, first fastening bolt; 6, travel device; 61, storage sleeve; 62, buffer rubber ring; 63, installation top plate; 64, travel rod; 65, adjusting bolt ; 66. Balance spring; 67. Mounting seat; 68. Second threaded column; 69. Second fastening bolt; 7. Supplementary device; 71. Supplementary bin; 72. Contact plate; 73. Supplementary hole; 74. Anti-falling seat; 75. Anti-falling net; 76. Travel sleeve; 77. Pressure rod; 78. Connecting shaft seat; 8. Annular protrusion; 9. Mounting groove; 10. Bending device; 101. Connecting rod; 102. Energy storage spring; 103. Connecting plate; 104. Bending plate. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0026] A concrete slump detection device, see Figure 1-Figure 2 , including an outer sleeve 1, an annular top plate 2 is fixedly installed on the outer surface of the outer sleeve 1 near the top, travel holes 3 are opened on the top of the annular top plate 2 near both sides, and side ears 4 are fixedly installed on both sides of the outer surface of the annular top plate 2. At the same time, the travel hole 3 limits the travel device 6, so that the travel device 6 can only move in the vertical direction.
[0027] See also Figure 1-Figure 2A pressing device 5 is fixedly installed on the top of the side ear 4 by bolt connection, a stroke device 6 is nested inside the outer sleeve 1, and a supplementary device 7 is placed on the top of the stroke device 6. An annular protrusion 8 is provided on the outer surface of the outer sleeve 1 near the bottom, and a mounting groove 9 is provided at the bottom of the annular protrusion 8. The mounting grooves 9 are distributed in a circular array, and a bending device 10 is movably installed inside the mounting groove 9. The mounting groove 9 is inclined inwardly, and the bending device 10 will contact the fallen stroke device 6 after being extended.
[0028] See also Figure 2-Figure 5 The pressing device 5 includes a column 51 and a rotating seat 52. A rotating arm 53 is movably sleeved on one side of the column 51 near the top. A strip hole 54 is opened on the top of the rotating arm 53. Side sliding grooves 55 are provided on both sides of the inner wall of the strip hole 54. The front end of the rotating arm 53 is connected to the supplementing device 7.
[0029] See also Figure 2-Figure 5 A rotating hole 56 is provided at one end of the rotating seat 52, and the rotating hole 56 is nested with the stroke device 6. A telescopic arm 57 is movably installed inside the rotating seat 52. Limiting sliders 58 are fixedly installed on both sides of the telescopic arm 57 near the front end. The limiting slider 58 is movably installed inside the side slide groove 55. The limiting slider 58 can slide along the extension direction of the side slide groove 55 to adjust the position, and the limiting slider 58 plays the role of a fulcrum of the rotating arm 53.
[0030] See also Figure 3-Figure 5 A first threaded column 59 is disposed on the top of the rotating seat 52, and a first fastening bolt 501 is disposed inside the first threaded column 59 through a threaded sleeve.
[0031] See also Figure 3-Figure 5 After the first fastening bolt 501 is tightened, the front end of the first fastening bolt 501 contacts the telescopic arm 57 , thereby achieving a fixing effect on the telescopic arm 57 .
[0032] See also Figure 2 and Figure 6-Figure 7 The stroke device 6 includes a material storage sleeve 61, a buffer rubber ring 62 is arranged at the bottom of the material storage sleeve 61, a mounting top plate 63 is fixedly installed on the outer surface of the material storage sleeve 61 near the top, and a stroke rod 64 is fixedly installed on the bottom of the mounting top plate 63 near the two sides, and the stroke rod 64 is sleeved inside the stroke hole 3.
[0033] Since the double sleeve mode is adopted and a buffer rubber ring 62 is provided at the bottom of the material storage sleeve 61, after injecting concrete into the material storage sleeve 61, the mounting top plate 63 can be directly knocked to compact the material storage sleeve 61. Since the buffer rubber ring 62 will be deformed in the process, the vibration amplitude of the material storage sleeve 61 during the knocking process is larger, so the compaction efficiency is higher, the number of knocks can be reduced, and the service life of the mounting top plate 63 is extended. At the same time, the deformation of the buffer rubber ring 62 can reduce the impact force on the mounting top plate 63 during the knocking process, thereby avoiding the problem of excessively high use cost due to the deformation of the mounting top plate 63 within a short period of use and the need for replacement, thereby improving the practicality of the device.
[0034] See also Figure 2 and Figure 6-Figure 7 An adjusting bolt 65 is sleeved inside the stroke rod 64 by means of threaded fitting, and a balancing spring 66 is clamped at one end of the adjusting bolt 65. The top end of the balancing spring 66 is fixedly connected to the bottom of the annular top plate 2. The balancing spring 66 stores elastic force to balance the weight of the stroke device 6, thereby ensuring that the stroke device 6 will not fall out of the outer sleeve 1 in the initial state.
[0035] See also Figure 6-Figure 7 , rotating the adjusting bolt 65 can adjust the elastic force of the balance spring 66 in the initial state.
[0036] See also Figure 3-Figure 7 A mounting seat 67 is fixedly installed on the top of the mounting top plate 63 at a position corresponding to the travel rod 64, and a second threaded column 68 is fixedly installed on one side of the mounting seat 67. The second threaded column 68 is movably sleeved with the rotating hole 56, and a second fastening bolt 69 is sleeved inside the second threaded column 68 by threaded cooperation. The second fastening bolt 69 will fix the rotating hole 56 after being tightened.
[0037] See also Figure 8-Figure 9 The replenishing device 7 includes a replenishing bin 71, in which replenishing concrete is stored.
[0038] See also Figure 7-Figure 9 A contact plate 72 is fixedly installed on the outer surface of the replenishing bin 71 near the top. The replenishing bin 71 is placed inside the storage sleeve 61, and the bottom of the contact plate 72 contacts the top of the mounting top plate 63. A replenishing hole 73 is opened at the bottom of the replenishing bin 71, and an anti-falling seat 74 is arranged above the replenishing hole 73. The anti-falling seat 74 is in a truncated cone shape to limit the falling of concrete under the action of gravity.
[0039] See also Figure 8-Figure 9 An anti-falling net 75 is fixedly installed inside the supplementary hole 73, and together with the anti-falling seat 74, it realizes the function of blocking the material.
[0040] See also Figure 2-Figure 3 and Figure 8-Figure 9 A travel sleeve 76 is fixedly installed on the top of the replenishing bin 71, and the travel sleeve 76 is connected to the inner cavity of the replenishing bin 71. A pressure rod 77 is movably installed inside the travel sleeve 76. Connecting shaft seats 78 are provided on both sides of the pressure rod 77 near the top. The connecting shaft seats 78 are movably sleeved on the front end of the rotating arm 53. During the falling process of the pressure rod 77, the concrete inside the replenishing bin 71 will be squeezed and made to fall through the replenishing hole 73 and the anti-falling net 75.
[0041] When the interior of the material storage sleeve 61 is filled with concrete for a collapse test, due to the certain viscosity of the concrete itself, part of the concrete adheres to the inner wall surface of the material storage sleeve 61, which increases the deadweight of the material storage sleeve 61, so that after the device is lifted, the material storage sleeve 61 moves in a vertical downward direction, and the rotating seat 52 moves downward synchronously, and the traction of the limit slider 58 drives the rotating arm 53 to be pulled down, so that the rotating arm 53 rotates along the connection between one end and the column 51, and the other end of the rotating arm 53 presses down and drives the connecting shaft seat 78 and the pressure rod 77 to press down, and squeezes the cavity inside the stroke sleeve 76, so that The concrete inside the replenishing bin 71 falls through the replenishing hole 73 and the anti-falling net 75 under the action of squeezing, thereby playing a replenishing role to make up for the concrete that adheres to the inner wall of the storage sleeve 61 and cannot fall, thereby improving the accuracy of the collapse test results. In addition, the amount of concrete discharged through the replenishing hole 73 and the anti-falling net 75 is proportional to the dead weight of the storage sleeve 61, and the dead weight of the storage sleeve 61 is proportional to the amount of concrete that adheres to the inner wall and cannot fall, thereby achieving the goal of making the replenished amount of concrete proportional to the concrete adhered to the inner wall of the storage sleeve 61, thereby further improving the accuracy of the experimental results of the device.
[0042] By rotating the rotating seat 52 and the telescopic amount of the telescopic arm 57, the relative position of the limit slider 58 in the side slide groove 55 can be adjusted. When the limit slider 58 is in the side slide groove 55 and close to the column 51, the side slide groove 55 rotates at a larger angle when the stroke device 6 moves downward, thereby making the downward pressing amplitude of the pressure rod 77 larger, and the amount of concrete discharged through the supplementary hole 73 and the anti-falling net 75 is more. When the limit slider 58 is in the side slide groove 55 and away from the column 51, the side slide groove 55 rotates at a smaller angle when the stroke device 6 moves downward, thereby making the downward pressing amplitude of the pressure rod 77 smaller, and the amount of concrete discharged through the supplementary hole 73 and the anti-falling net 75 is reduced, so that the amount of concrete discharged can be adjusted according to the density of the concrete and specific needs, thereby further improving the practicality of the device.
[0043] See also Figure 2 , Figure 7 and Fig.10The bending device 10 includes a connecting rod 101, which passes through the top of the mounting groove 9. An energy storage spring 102 is clamped on the top of the connecting rod 101. The bottom of the energy storage spring 102 is clamped on the top of the annular protrusion 8. A connecting piece 103 is fixedly installed on the top of the connecting rod 101, and a bending piece 104 is fixedly installed on the bottom of the connecting piece 103. The bottom of the inner side of the bending piece 104 is set to an arc shape. After the bending piece 104 is extended and contacts with the buffer rubber ring 62, the buffer rubber ring 62 will bend inward due to the arc shape of the inner bottom of the bending piece 104.
[0044] See also Figure 2 and Fig.10 In the initial state, the energy storage spring 102 is in a stretched state, and the connecting piece 103 and the bending piece 104 are completely inside the mounting groove 9 .
[0045] When the device is lifted, the elastic force stored in the energy storage spring 102 is released, and the connecting piece 103 and the bending piece 104 extend out from the inside of the mounting groove 9. Since the mounting groove 9 is inclined inward, the bending piece 104 will be located directly below the buffer rubber ring 62 after extending. When the stroke device 6 is completely removed from the inside of the outer sleeve 1, the buffer rubber ring 62 will contact the inner side of the bending piece 104. At this time, the inner bottom of the bending piece 104 is arc-shaped, so that the buffer rubber ring 62 will bend inward after contacting the bending piece 104, thereby preventing the concrete sliding down the inner wall of the storage sleeve 61 from falling from the bottom, playing the role of blocking material, and avoiding the problem that after the concrete inside the replenishment bin 71 is discharged to make up for the concrete adhered to the inner wall of the storage sleeve 61, the concrete adhered to the inner wall of the storage sleeve 61 slides and falls, resulting in deviations in the experimental results, thereby further improving the accuracy of the experimental results of the device.
[0046] The method of use of the present invention is as follows: Before use, the distance between the adjusting bolt 65 and the stroke rod 64 is adjusted by turning the adjusting bolt 65 and under the action of the thread, thereby changing the initial elastic force of the balance spring 66, so that the elastic force can ensure that the storage sleeve 61 as a whole can be located inside the outer sleeve 1 and will not fall out. The position of the limit slider 58 inside the side slide groove 55 is adjusted according to the density, deadweight, proportion of each raw material and specific needs of the experimental object. After the adjustment is completed, the second fastening bolt 69 and the first fastening bolt 501 are tightened to fix the rotating seat 52 and the telescopic arm 57. Then, the concrete to be tested is injected into the interior of the storage sleeve 61 from above and compacted. Then, the supplementary bin 71 filled with concrete is placed on the top of the storage sleeve 61.
[0047] During use, the device is directly lifted in the vertical upward direction. When the interior of the storage sleeve 61 is filled with concrete for a slump test, due to the certain viscosity of the concrete itself, part of the concrete adheres to the inner wall surface of the storage sleeve 61, which increases the deadweight of the storage sleeve 61, so that after the device is lifted, the storage sleeve 61 moves in the vertical downward direction, and the rotating seat 52 moves downward synchronously, and drives the rotating arm 53 to pull down through the traction of the limit slider 58, so that the rotating arm 53 rotates along the connection between one end and the column 51, and the other end of the rotating arm 53 presses down and drives the connecting shaft seat 78 and the pressure rod 77 to press down, and squeezes the cavity inside the stroke sleeve 76, so that the concrete inside the replenishing bin 71 falls through the replenishing hole 73 and the anti-falling net 75 under the action of squeezing, thereby playing a replenishing role, used to make up for the concrete that adheres to the inner wall of the storage sleeve 61 and cannot fall. The amount of concrete discharged from the replenishing hole 73 and the anti-falling net 75 is proportional to the deadweight of the storage sleeve 61, and the deadweight of the storage sleeve 61 is proportional to the amount of concrete attached to the inner wall and unable to fall, thereby achieving that the amount of replenished concrete is proportional to the concrete attached to the inner wall of the storage sleeve 61. When the device is lifted, the elastic force stored in the energy storage spring 102 is released, and the connecting piece 103 and the bending piece 104 extend from the inside of the mounting groove 9. Since the mounting groove 9 is inclined inward, the bending piece 104 will be located directly below the buffer rubber ring 62 after extending. When the stroke device 6 is completely removed from the inside of the outer sleeve 1, the buffer rubber ring 62 will contact the inner side of the bending piece 104. At this time, the inner bottom of the bending piece 104 is arc-shaped, so that the buffer rubber ring 62 will bend inward after contacting the bending piece 104, thereby preventing the concrete sliding down the inner wall of the storage sleeve 61 from falling from the bottom, thereby playing a role in blocking material.
[0048] After use, the experimenters can record the data after the concrete collapses to obtain the specific physical properties of the concrete.
Claims
1. A concrete slump detection device, characterized in that: The invention comprises an outer sleeve (1), an annular top plate (2) is fixedly mounted on the outer surface of the outer sleeve (1) at a position close to the top, travel holes (3) are provided on the top of the annular top plate (2) at positions close to both sides, side ears (4) are fixedly mounted on both sides of the outer surface of the annular top plate (2), a pressing device (5) is fixedly mounted on the top of the side ears (4) by means of bolt connection, a travel device (6) is nested inside the outer sleeve (1), a supplement device (7) is placed on the top of the travel device (6), an annular protrusion (8) is provided on the outer surface of the outer sleeve (1) at a position close to the bottom, a mounting groove (9) is provided at the bottom of the annular protrusion (8), the mounting grooves (9) are distributed in an annular array, and a bending device (10) is movably mounted inside the mounting groove (9).
2. A concrete slump detection device according to claim 1, characterized in that: The pressing device (5) comprises a column (51) and a rotating seat (52); a rotating arm (53) is movably sleeved on a position near the top of one side of the column (51); a strip hole (54) is opened on the top of the rotating arm (53); side sliding grooves (55) are arranged on both sides of the inner wall of the strip hole (54); and a front end of the rotating arm (53) is connected to the supplementing device (7); A rotating hole (56) is provided at one end of the rotating seat (52), and the rotating hole (56) is sleeved with the stroke device (6). A telescopic arm (57) is movably installed inside the rotating seat (52), and a limit slider (58) is fixedly installed at positions close to the front ends of both sides of the telescopic arm (57). The limit slider (58) is movably installed inside the side slide groove (55). A first threaded column (59) is provided on the top of the rotating seat (52), and a first fastening bolt (501) is provided inside the first threaded column (59) through a threaded sleeve; After the first fastening bolt (501) is tightened, the front end of the first fastening bolt (501) contacts the telescopic arm (57).
3. A concrete slump detection device according to claim 1, characterized in that: The stroke device (6) comprises a material storage sleeve (61), a buffer rubber ring (62) is provided at the bottom of the material storage sleeve (61), a mounting top plate (63) is fixedly installed at a position near the top of the outer surface of the material storage sleeve (61), a stroke rod (64) is fixedly installed at a position near the bottom of the mounting top plate (63) near both sides, an adjusting bolt (65) is sleeved inside the stroke rod (64) by means of threaded fit, a balance spring (66) is clamped at one end of the adjusting bolt (65), the top of the balance spring (66) is fixedly connected to the bottom of the annular top plate (2), a mounting seat (67) is fixedly installed at a position corresponding to the top of the mounting top plate (63) and the stroke rod (64), a second threaded column (68) is fixedly installed on one side of the mounting seat (67), the second threaded column (68) is movably sleeved with the rotating hole (56), and a second fastening bolt (69) is sleeved inside the second threaded column (68) by means of threaded fit.
4. A concrete slump detection device according to claim 3, characterized in that: The replenishing device (7) comprises a replenishing bin (71), a contact plate (72) is fixedly mounted on the outer surface of the replenishing bin (71) at a position close to the top, the replenishing bin (71) is placed inside the material storage sleeve (61), and the bottom of the contact plate (72) contacts the top of the mounting top plate (63), a replenishing hole (73) is opened at the bottom of the replenishing bin (71), an anti-drop seat (74) is arranged above the replenishing hole (73), an anti-drop net (75) is fixedly mounted inside the replenishing hole (73), a travel sleeve (76) is fixedly mounted on the top of the replenishing bin (71), the travel sleeve (76) is connected to the inner cavity of the replenishing bin (71), a pressure rod (77) is movably mounted inside the travel sleeve (76), and connecting shaft seats (78) are arranged on both sides of the pressure rod (77) at positions close to the top, and the connecting shaft seat (78) is movably sleeved with the front end of the rotating arm (53).
5. A concrete slump detection device according to claim 1, characterized in that: The bending device (10) comprises a connecting rod (101), the connecting rod (101) passes through the top of the mounting groove (9), the top of the connecting rod (101) is clamped with an energy storage spring (102), the bottom of the energy storage spring (102) is clamped with the top of the annular protrusion (8), the top of the connecting rod (101) is fixedly mounted with a connecting piece (103), the bottom of the connecting piece (103) is fixedly mounted with a bending piece (104), and the bottom of the inner side of the bending piece (104) is arranged to be arc-shaped.
6. A concrete slump detection device according to claim 5, characterized in that: The energy storage spring (102) is in a stretched state in an initial state, and the connecting piece (103) and the bending piece (104) are completely inside the installation groove (9).