A slump measuring instrument for engineering supervision

Abstract

This utility model discloses a slump tester for engineering supervision, applied in the field of slump testing technology. It includes a slump cylinder, with an adjustment assembly fixedly installed on its surface. The adjustment assembly includes four connecting rods, with an auxiliary assembly engaged between opposite sides of the four connecting rods. The auxiliary assembly includes a positioning shell, the bottom of which contacts the slump cylinder. The adjustment assembly also includes a positioning ring. When workers need to precisely tamp concrete within a specified area, the user moves the tamping rod with a fixed limiting sleeve, causing the limiting plate to compress a return spring. The spring's elasticity resets the limiting plate and its connected structure. If adjustments to the angle or position of the tamping rod are needed during tamping, these adjustments can be made by changing the angle or position of the movable shell relative to the inner cavity of the connecting frame.

Description

Technical Field

[0001] This utility model belongs to the field of slump testing technology, and specifically relates to a slump measuring instrument for engineering supervision. Background Technology

[0002] A slump meter for engineering supervision is an instrument used to measure the slump of concrete mixtures. It typically consists of a slump cone, tamping rod, steel ruler, and other components. The overall design conforms to relevant standards and specifications. It is used to accurately measure the fluidity of concrete and help supervisors assess whether the concrete quality meets the project requirements.

[0003] Currently, Chinese utility model patent CN219142846U discloses a novel concrete slump tester, comprising a slump cylinder and a funnel. The funnel has an inner wall and an outer wall, and can be placed on the upper end of the slump cylinder and fixed relative to it. The lower port of the funnel matches the upper port of the slump cylinder. Handrails are installed on the left and right sides of the slump cylinder, and a fixing device is provided on the side wall of the slump cylinder. The device is characterized by an arc-shaped chute used in conjunction with the funnel, the outer wall of which can be fitted and fixed to the inner wall of the funnel, and the arc-shaped chute extending upward beyond the funnel. This novel concrete slump tester can prevent slurry from spilling onto the side of the equipment and also reduces manual labor.

[0004] When using this slump meter, it is impossible to precisely control the angle and position of the tamping rod inside the slump cylinder. If the tamping range is too concentrated in the center, it will cause the edges of the concrete layer to be loose and the center to be too dense, making the concrete specimen structure unstable after the test. It is prone to tilting or cracking during slump, which directly affects the accuracy of the slump value. Utility Model Content

[0005] The purpose of this utility model is to provide a slump measuring instrument for engineering supervision, which has the advantage of enabling workers to accurately tamp concrete within a specified range during concrete tamping.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a slump measuring instrument for engineering supervision, comprising a slump cylinder, an adjustment component fixedly installed on the surface of the slump cylinder, the adjustment component comprising four connecting rods, an auxiliary component being engaged between opposite sides of the four connecting rods, the auxiliary component comprising a positioning shell, the bottom of the positioning shell being in contact with the slump cylinder.

[0007] The above technical solution allows for precise tamping of concrete within a specified area during concrete tamping. The user uses a tamping rod with a fixed limiting sleeve to compress a return spring via a limiting plate. The spring's elasticity resets the limiting plate and its connected structure. If adjustments to the angle or position of the tamping rod are needed, these can be achieved by changing the angle or position of the movable shell within the connecting frame. After tamping the bottom layer of concrete using the auxiliary component, precise tamping of subsequent concrete is required. The user pours a measured amount of concrete into the slump cone, releases the locking ring from the connecting rod, pulls the connecting rod upwards to the designated position, and then re-locks the locking ring onto the connecting rod. This process is repeated to achieve precise tamping of subsequent concrete after the bottom layer has been tamped using the auxiliary component.

[0008] The present invention is further configured such that the adjustment component includes a positioning ring, the inner cavity of the positioning ring is movably connected to the connecting rod via a shaft pin, and a locking ring is movably connected to the surface of the positioning ring, the locking ring being engaged with the connecting rod on the side near the connecting rod.

[0009] The above technical solution is adopted: the position of the connecting rod is adjusted by connecting the positioning ring and the connecting rod with the shaft pin to adapt to the concrete tamping requirements of different heights. The locking structure between the locking ring and the connecting rod can lock the position of the connecting rod to prevent it from shifting at an angle due to vibration during tamping, thus ensuring the stability of the auxiliary components.

[0010] The present invention is further configured such that an auxiliary wheel is slidably connected to the inner cavity of the connecting rod, and the inner cavity of the auxiliary wheel is slidably connected to the positioning ring.

[0011] The above technical solution reduces friction between the auxiliary wheel and the positioning ring during relative movement by using a sliding engagement between the auxiliary wheel and the positioning ring. It also guides the movement trajectory of the connecting rod, preventing jamming or deviation during adjustment.

[0012] The present invention is further configured such that a locking block is fixedly installed on the side of the connecting rod near the collapse cylinder, and the surface of the locking block is in contact with the collapse cylinder.

[0013] The above technical solution enhances the stability of the connecting rod on the surface of the slumping cylinder by contacting the locking block with the slumping cylinder, prevents the adjustment component from sliding along the surface of the slumping cylinder during use, ensures the accurate relative position of the adjustment component and the slumping cylinder, and improves the overall structural reliability of the measuring instrument.

[0014] The present invention is further configured such that a connecting frame is slidably connected to the inner cavity of the positioning shell, a movable shell is slidably connected to the inner cavity of the connecting frame, a connecting ring is slidably connected to the inner cavity of the movable shell, a return spring is fixedly installed on the top of the connecting ring, a limit ring is fixedly installed on the top of the return spring, the surface of the limit ring is slidably connected to the inner cavity of the movable shell, and a limit sleeve is fitted inside the inner cavity of the limit ring.

[0015] The above technical solution achieves multi-angle and positional adjustment of the limiting sleeve on the surface of the tamping rod by sliding the connecting frame in the positioning shell and the movable shell in the connecting frame, thus meeting the tamping needs of different areas of concrete. The return spring provides elastic buffer for the tamping rod through the cooperation of the connecting ring and the limiting ring, avoiding excessive force during tamping that could cause concrete to splash or damage to the instrument. At the same time, it automatically resets after the tamping rod is released, improving the ease of operation.

[0016] The present invention is further configured such that the inner cavity of the movable shell is provided with a slot, and the inner cavity of the slot is slidably connected to the connecting ring and the limiting ring.

[0017] The above technical solution is adopted: the sliding guide of the connecting ring and the limiting ring by the slot ensures that the limiting ring moves smoothly along the axial direction of the inner cavity of the movable shell, avoiding the offset or twisting when the return spring is extended and retracted. The slot also restricts the movement of the connecting ring to prevent it from detaching from the movable shell and causing structural failure, thereby enhancing the stability and safety of the auxiliary components.

[0018] In summary, this utility model has the following beneficial effects: 1. When workers need to precisely tamp concrete within a specified area during the tamping process, the user will use the tamping rod with the fixed limit sleeve to drive the limit plate to squeeze the reset spring. The spring's elasticity will reset the limit plate and the structure connected to it. If it is necessary to make auxiliary changes to the angle or position of the tamping rod during tamping, the angle or position of the movable shell and the inner cavity of the connecting frame can be changed to make auxiliary changes to the angle or position of the tamping rod during tamping. 2. After the bottom layer of concrete has been compacted using the auxiliary components, and the subsequent concrete needs to be compacted precisely, the user pours a measured amount of concrete into the slump cone, then cancels the locking ring from engaging the connecting rod. After pulling the connecting rod upward to the designated position, the locking ring is re-engaged with the connecting rod. The process of using the auxiliary components is then repeated to complete the precise compaction of the subsequent concrete after the bottom layer of concrete has been compacted using the auxiliary components. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the adjustment component of this utility model; Figure 3 This is an exploded view of the auxiliary components of this utility model; Figure 4 This is a cross-sectional view of the movable shell of this utility model.

[0020] Reference numerals in the attached drawings: 1. Collapse cylinder; 2. Adjustment component; 201. Positioning ring; 202. Connecting rod; 203. Locking ring; 204. Auxiliary wheel; 205. Locking block; 3. Auxiliary component; 301. Positioning shell; 302. Connecting frame; 303. Movable shell; 304. Connecting ring; 305. Return spring; 306. Limiting ring; 307. Limiting sleeve; 308. Slot. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Example 1: refer to Figure 1 , Figure 3 and Figure 4 A slump tester for engineering supervision includes a slump cylinder 1, an adjustment assembly 2 fixedly installed on the surface of the slump cylinder 1, and the adjustment assembly 2 includes four connecting rods 202.

[0023] Furthermore, the adjustment component 2 includes a positioning ring 201. The inner cavity of the positioning ring 201 is movably connected to the connecting rod 202 via a shaft pin. A locking ring 203 is movably connected to the surface of the positioning ring 201. The side of the locking ring 203 closest to the connecting rod 202 is engaged with the connecting rod 202.

[0024] Furthermore, an auxiliary wheel 204 is slidably connected to the inner cavity of the connecting rod 202, and the inner cavity of the auxiliary wheel 204 is slidably connected to the positioning ring 201.

[0025] Furthermore, a locking block 205 is fixedly installed on the side of the connecting rod 202 near the collapse cylinder 1, and the surface of the locking block 205 is in contact with the collapse cylinder 1.

[0026] Brief description of usage: After completing the initial concrete compaction using auxiliary component 3, when precise compaction of subsequent concrete is required, the user pours a measured amount of concrete into the slump cone 1, then releases the locking ring 203 from the connecting rod 202, and pulls the connecting rod 202 upwards. For precise compaction of the second layer, the connecting rod 202 is moved to the second locking position, and the locking ring 203 is re-engaged with the connecting rod 202. The process of using auxiliary component 3 is then repeated. After completing the initial concrete compaction using auxiliary component 3, precise compaction of subsequent concrete is achieved by connecting the positioning ring 201 to the connecting rod 202 via a pin, allowing for position adjustment of the connecting rod 202 to accommodate concrete of different heights. For concrete tamping requirements, the locking structure between the locking ring 203 and the connecting rod 202 can lock the position of the connecting rod 202, preventing it from shifting at an angle due to vibration during tamping and ensuring the stability of the auxiliary component 3. The sliding engagement of the auxiliary wheel 204 between the connecting rod 202 and the positioning ring 201 reduces the friction between the two during relative movement and guides the movement trajectory of the connecting rod 202, avoiding jamming or shifting during adjustment. The contact between the locking block 205 and the slumping cylinder 1 enhances the stability of the connecting rod 202 on the surface of the slumping cylinder 1, preventing the adjusting component 2 from sliding along the surface of the slumping cylinder 1 during use, ensuring the accurate relative position of the adjusting component 2 and the slumping cylinder 1, and improving the overall structural reliability of the measuring instrument.

[0027] Example 2: refer to Figure 1 and Figure 2 A slump tester for engineering supervision includes four connecting rods 202, and an auxiliary component 3 is snapped between opposite sides of the four connecting rods 202. The auxiliary component 3 includes a positioning shell 301, the bottom of which is in contact with the slump cylinder 1.

[0028] Furthermore, a connecting frame 302 is slidably connected to the inner cavity of the positioning shell 301, a movable shell 303 is slidably connected to the inner cavity of the connecting frame 302, a connecting ring 304 is slidably connected to the inner cavity of the movable shell 303, a return spring 305 is fixedly installed on the top of the connecting ring 304, a limit ring 306 is fixedly installed on the top of the return spring 305, the surface of the limit ring 306 is slidably connected to the inner cavity of the movable shell 303, and a limit sleeve 307 is sleeved in the inner cavity of the limit ring 306.

[0029] Furthermore, the inner cavity of the movable shell 303 is provided with a slot 308, and the inner cavity of the slot 308 is slidably connected to the connecting ring 304 and the limiting ring 306.

[0030] Brief description of usage: Before use, the user should ensure that when the limiting sleeve 307 presses against the limiting ring 306 and the return spring 305, the tamping rod at the bottom of the inner cavity of the collapse cylinder 1 can be fixed with the limiting sleeve 307 at any angle of the movable shell 303. After ensuring that the tamping rod is not inserted into the auxiliary component 3 and that the remaining part of the collapse cylinder 1 is sufficient for the worker to hold, the limiting sleeve 307 is placed on the inner cavity of the limiting ring 306 to complete the adjustment and fixation of the tamping rod to the auxiliary component 3. Then, the user should snap the auxiliary component 3 and the adjustment component 2 together. After completing the preparation, the user should use the tamping rod fixed with the limiting sleeve 307 to drive the limiting plate to press against the return spring 305. The spring's elasticity will reset the limiting plate and the structure connected to it. If it is necessary to make auxiliary changes to the angle or position of the tamping rod during tamping, the angle or position of the movable shell 303 in the inner cavity of the connecting frame 302 can be changed to complete the adjustment of the tamping rod during tamping. The angle or position of the tamping rod can be adjusted by sliding the connecting frame 302 within the positioning shell 301 and the movable shell 303 within the connecting frame 302. This allows for multi-angle and positional adjustment of the limiting sleeve 307 fitted onto the surface of the tamping rod, meeting the tamping needs of different areas of concrete. The return spring 305, through the cooperation of the connecting ring 304 and the limiting ring 306, provides elastic buffering for the tamping rod, preventing excessive force during tamping from causing concrete splashing or instrument damage. It also automatically resets after the tamping rod is released, improving operational convenience. The slot 308 guides the sliding of the connecting ring 304 and the limiting ring 306, ensuring that the limiting ring 306 moves smoothly along the axial direction of the inner cavity of the movable shell 303, preventing the return spring 305 from shifting or twisting during extension and retraction. The slot 308 also restricts the movement of the connecting ring 304, preventing it from detaching from the movable shell 303 and causing structural failure, thus enhancing the stability and safety of the auxiliary component 3.

[0031] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0032] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A slump measuring instrument for engineering supervision, comprising a slump cylinder (1), characterized in that: An adjustment assembly (2) is fixedly installed on the surface of the collapse cylinder (1), and the adjustment assembly (2) includes four connecting rods (202). An auxiliary component (3) is snapped between opposite sides of the four connecting rods (202). The auxiliary component (3) includes a positioning shell (301). The bottom of the positioning shell (301) is in contact with the collapse cylinder (1). A connecting frame (302) is slidably connected to the inner cavity of the positioning shell (301). A movable shell (303) is slidably connected to the inner cavity of the connecting frame (302). A connecting ring (304) is slidably connected to the inner cavity of the movable shell (303). A return spring (305) is fixedly installed on the top of the connecting ring (304). A limit ring (306) is fixedly installed on the top of the return spring (305). The surface of the limit ring (306) is slidably connected to the inner cavity of the movable shell (303). A limit sleeve (307) is sleeved on the inner cavity of the limit ring (306).

2. The slump tester for engineering supervision according to claim 1, characterized in that: The adjustment component (2) includes a positioning ring (201), the inner cavity of which is movably connected to the connecting rod (202) via a shaft pin, and a locking ring (203) is slidably connected to the surface of the positioning ring (201), the side of the locking ring (203) near the connecting rod (202) being engaged with the connecting rod (202).

3. The slump tester for engineering supervision according to claim 2, characterized in that: The inner cavity of the connecting rod (202) is slidably connected to an auxiliary wheel (204), and the inner cavity of the auxiliary wheel (204) is slidably connected to a positioning ring (201).

4. The slump tester for engineering supervision according to claim 2, characterized in that: A locking block (205) is fixedly installed on the side of the connecting rod (202) near the collapse cylinder (1), and the surface of the locking block (205) is in contact with the collapse cylinder (1).

5. The slump tester for engineering supervision according to claim 1, characterized in that: The inner cavity of the movable shell (303) is provided with a slot (308), and the inner cavity of the slot (308) is slidably connected to the connecting ring (304) and the limiting ring (306).

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