CN218331088U - Concrete fluidity measuring device - Google Patents

Abstract

The application discloses concrete fluidity survey device relates to concrete performance check out test set's technical field. The slump constant barrel comprises a base and a slump barrel arranged on the base, wherein a fixing device for fixing the slump barrel is arranged on the base; the fixing device comprises two groups of clamping jaw assemblies which are respectively oppositely arranged on two sides of the slump cone; the clamping jaw assembly comprises a connecting rod, and the connecting rod is a rod with an extensible length; the equal fixedly connected with stationary dog of one end that two connecting rods are relative, two stationary dogs are contradicted with the slump section of thick bamboo outer wall that corresponds position department respectively and are compressed tightly. This application makes stationary dog and slump section of thick bamboo lateral wall in close contact with through the length that changes the connecting rod, and two sets of clamping jaw subassembly combined action is with a slump section of thick bamboo stable fixation, and the concrete condition of flow when having effectively prevented that the measurement personnel from knocking a slump section of thick bamboo has improved the degree of accuracy of testing result greatly.

Description

Concrete fluidity measuring device

Technical Field

The application relates to the technical field of concrete performance detection equipment, in particular to a concrete fluidity determination device.

Background

The slump of the concrete represents the plasticizing performance and the pumpability of the concrete, the diffusivity of the concrete is the flowing capacity of the concrete in a natural accumulation state, and the detection methods of the concrete and the concrete are communicated; the detection methods of the two methods are as follows: pouring concrete into a horn-shaped slump cone with an upper opening diameter of 100mm, a lower opening diameter of 200mm and a height of 300mm for 3 times, uniformly knocking 25 times along the cone wall from outside to inside by a tamping hammer after each filling, leveling the concrete at the cone opening after tamping, then pulling up the cone upwards, enabling the concrete to naturally slump and flow, measuring the height of the highest point of a concrete pile and the diameter of a diffusion surface after the concrete pile is stabilized, wherein the slump is obtained by subtracting the height of the highest point from the height of the slump cone, and the area of the diffusion surface is the diffusivity.

At present, when the side wall of the slump cone is knocked, a detector needs to hold a hammer with one hand to knock the outer side wall of the slump cone, and hold the slump cone with the other hand to limit the slump cone to shake so as to prevent a concrete sample from flowing out of the slump cone in a knocking process to influence the accuracy of a detection result.

Aiming at the related technologies, the inventor thinks that when a detector knocks the slump cone, the slump cone still generates small-amplitude shaking under the restriction of human factors, a small amount of concrete sample still flows out of the slump cone, and the defect of inaccurate detection result exists.

SUMMERY OF THE UTILITY MODEL

In order to avoid the measurement personnel concrete sample to flow when knocking the slump section of thick bamboo, this application provides a concrete fluidity survey device.

The application provides a concrete fluidity surveys device adopts following technical scheme:

a concrete fluidity testing device comprises a base and a slump cone placed on the base, wherein a fixing device for fixing the slump cone is arranged on the base; the fixing device comprises two groups of clamping jaw assemblies which are respectively and oppositely arranged on two sides of the slump cone;

the clamping jaw assembly comprises a connecting rod, and the connecting rod is a rod with an extensible length; two the equal fixedly connected with stationary dog of the relative one end of connecting rod, two the stationary dog is contradicted with the slump section of thick bamboo outer wall of corresponding position department respectively and is compressed tightly.

By adopting the technical scheme, the fixing claws are in close contact with the outer side wall of the slump cone by changing the length of the connecting rods, and the slump cone is stably fixed under the combined action of the two groups of clamping jaw assemblies, so that the condition that concrete flows out when a detector strikes the slump cone is effectively prevented, and the accuracy of a detection result is greatly improved; and the connecting rod is telescopic in length, so that the slump cone can be conveniently placed between the two fixing claws.

Preferably, a lifting device is arranged on the base and used for driving the fixing device to reciprocate along the vertical direction.

Through adopting above-mentioned technical scheme, be provided with the elevating gear who drives fixing device along vertical direction reciprocating motion on the base, elevating gear drives slump section of thick bamboo and upwards moves along vertical direction when driving fixing device, has saved the manual step of carrying a slump section of thick bamboo of measurement personnel, has reduced measurement personnel's physical labor volume.

Preferably, the lifting device comprises two groups of lifting mechanisms; the two groups of lifting mechanisms are respectively arranged corresponding to the two groups of clamping jaw assemblies;

the lifting mechanism comprises a lead screw which is rotationally connected with the base, the axis direction of the lead screw is arranged along the vertical direction, a guide plate is connected onto the lead screw in a threaded manner, and one end of the connecting rod, which is far away from the fixed claw, is fixedly connected with the guide plate;

the lifting mechanism further comprises a guide rod fixedly connected with the base, the axis direction of the guide rod is arranged along the vertical direction, and the guide plate is connected with the guide rod in a sliding manner;

the lifting device also comprises a driving mechanism which drives the two lead screws to rotate simultaneously.

Through adopting above-mentioned technical scheme, start actuating mechanism, actuating mechanism drives two lead screws simultaneously and rotates, deflector and lead screw threaded connection and with the guide bar connection of sliding, the lead screw rotates and drives the deflector and upwards remove along vertical direction, and then drives clamping jaw subassembly and upwards remove along vertical direction, and then drives slump section of thick bamboo rebound, the process that the slump section of thick bamboo rises is steady relatively, has avoided the condition that slump section of thick bamboo rises the in-process and produces the condition of rocking by a wide margin, has further improved the degree of accuracy of testing result.

Preferably, the driving mechanism comprises a driving motor and a transmission assembly; the driving motor is fixed on the base, and the output end of the driving motor is coaxially and fixedly connected with one lead screw;

the transmission assembly comprises two chain wheels which are respectively and fixedly connected with the two lead screws in a coaxial mode, and a chain is connected between the two chain wheels in a meshed mode.

By adopting the technical scheme, the driving motor is started, the driving motor drives one lead screw to rotate, and the other lead screw also starts to rotate under the action of the two chain wheels and the chain; the driving motor drives the two lead screws to synchronously rotate through the transmission assembly, so that the synchronism of the two lead screws is greatly improved, and the rising process of the slump cone is more stable.

Preferably, the connecting rod comprises an internal threaded tube and an external threaded rod, and the internal threaded tube is in threaded connection with the external threaded rod; the fixing claw is a concave plate, one end of the fixing claw, which is concave inwards, is arc-shaped, one end of the fixing claw, which is concave inwards, is in close contact with the slump cone, and one end of the fixing claw, which is back to the concave inwards, is rotatably connected with the external threaded rod.

By adopting the technical scheme, the length of the connecting rod is changed by relatively rotating the internal threaded pipe and the external threaded rod; the fixed claw is rotationally connected with the external thread rod, and when the internal thread pipe and the external thread rod rotate relatively, the fixed claw keeps relatively static; when adjusting connecting rod self length, the open end position state of stationary dog remains throughout with slump section of thick bamboo outer wall matched with position state, influences the fixed action of stationary dog to a slump section of thick bamboo when preventing to adjust connecting rod length.

Preferably, an upper limiting piece is arranged on the outer side wall of the slump cone, the upper limiting piece is positioned above the fixed claw, and the fixed claw is in close contact with the upper limiting piece.

Through adopting above-mentioned technical scheme, when elevating gear drove the clamping jaw subassembly and upwards removed, go up spacing piece and stationary dog in close contact with, go up spacing piece restriction stationary dog and break away from a slump section of thick bamboo, further improved stability.

Preferably, the upper limiting piece comprises a limiting ring plate coaxially sleeved on the outer side wall of the slump cone, and the bottom end of the limiting ring plate is in close contact with the fixed claw;

the top end of the limit ring plate is coaxially and fixedly connected with a blocking side wall, and the limit ring plate and the blocking side wall form a circular box body with an upward opening.

Through adopting above-mentioned technical scheme, when floating the operation to the concrete sample in the slump section of thick bamboo, unnecessary concrete sample drops to spacing ring board and blocks the space that the lateral wall encloses, prevents that unnecessary concrete from dropping to the base on influence the detection of concrete mobility.

Preferably, the outer side wall of the slump cone is provided with a lower limiting piece, the lower limiting piece is located below the fixed claw, and the fixed claw is in close contact with the lower limiting piece.

Through adopting above-mentioned technical scheme, when filling the concrete sample in to the slump section of thick bamboo, control elevating gear drives the stationary dog and moves down, and the stationary dog extrudees lower retainer, has further improved the stability of slump section of thick bamboo on the base.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the length of the connecting rod is changed to enable the fixing claws to be in close contact with the outer side wall of the slump cone, and the slump cone is stably fixed under the combined action of the two groups of clamping jaw assemblies, so that the condition that concrete flows out when a detector knocks the slump cone is effectively prevented, and the accuracy of a detection result is greatly improved; the length of the connecting rod is telescopic, so that the slump cone can be conveniently placed between the two fixing claws;

2. the lifting device is arranged on the base and drives the fixing device to reciprocate in the vertical direction, and the lifting device drives the fixing device and simultaneously drives the slump cone to move upwards in the vertical direction, so that the step of manually lifting the slump cone by a detector is omitted, and the physical labor capacity of the detector is reduced;

3. when the lifting device drives the clamping jaw assembly to move upwards, the upper limiting piece is in close contact with the fixed jaw, the upper limiting piece limits the fixed jaw to be separated from the slump cylinder, and the stability is further improved.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic diagram showing an exploded structure of a connecting rod in the embodiment of the present application.

Description of reference numerals: 1. a base; 11. a diffusivity scale line; 2. a slump cone; 21. an upper limiting member; 211. a limit ring plate; 212. a barrier sidewall; 22. a lower retainer; 3. a lifting mechanism; 31. a lead screw; 32. a guide rod; 33. a guide plate; 4. a drive mechanism; 41. a drive motor; 42. a transmission assembly; 421. a sprocket; 422. a chain; 5. a jaw assembly; 51. a connecting rod; 511. an internally threaded tube; 512. an externally threaded rod; 52. and fixing the claws.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses concrete fluidity survey device.

Examples

Referring to fig. 1, a concrete fluidity measuring device comprises a base 1, wherein the base 1 is a rectangular plate, diffusivity scale marks 11 are arranged in the middle of the base 1, and the diffusivity scale marks 11 are used for measuring the diameter of concrete after diffusion; a slump cone 2 is arranged in the middle of the base 1;

the base 1 is provided with a lifting device, and the lifting device comprises two groups of lifting mechanisms 3 and a driving mechanism 4 for driving the two groups of lifting mechanisms 3 to work simultaneously; the two groups of lifting mechanisms 3 are respectively positioned at two ends of the base 1 in the length direction, and the two groups of lifting mechanisms 3 are respectively and symmetrically arranged in the axial direction of the slump cone 2.

The lifting mechanism 3 comprises a lead screw 31 which is rotationally connected with the base 1, and the axial direction of the lead screw 31 is arranged along the vertical direction; the lifting mechanism 3 further includes two guide rods 32, the two guide rods 32 are respectively arranged symmetrically with respect to the axial direction of the lead screw 31, and the axial direction of the guide rods 32 is arranged in the vertical direction; the screw rod 31 is in threaded connection with a guide plate 33, the guide plate 33 is a rectangular plate, and two ends of the guide plate 33 are respectively in sliding connection with the two guide rods 32;

the driving mechanism 4 comprises a driving motor 41 and a transmission assembly 42, the driving motor 41 is fixed at the bottom end of the base 1, the axis direction of the output end of the driving motor 41 is arranged along the vertical direction, and the output end of the driving motor 41 is coaxially and fixedly connected with a lead screw 31; the transmission assembly 42 comprises two chain wheels 421 respectively and coaxially and fixedly connected with the two lead screws 31, and the chain wheels 421 are located at one ends of the lead screws 31 departing from the base 1; the transmission assembly 42 further comprises a chain 422 meshingly connected between the two chain wheels 421.

With reference to fig. 1 and 2, a fixing device for fixing the slump cone 2 is arranged on the base 1, and the fixing device comprises two groups of clamping jaw assemblies 5; the two groups of clamping jaw assemblies 5 are respectively and correspondingly arranged on the two guide plates 33; the clamping jaw assembly 5 comprises a connecting rod 51, and the connecting rod 51 is a rod with an extensible length; the connecting rod 51 comprises an internal threaded tube 511 fixed on the guide plate 33, the internal threaded tube 511 is a tube body provided with internal threads, and the axial direction of the internal threaded tube 511 is arranged along the length direction of the base 1; the connecting rod 51 further comprises an external thread rod 512, wherein the external thread rod 512 is a round rod provided with external threads; the external thread rod 512 is in threaded connection with the internal thread tube 511, and the external thread rod 512 is positioned at one end of the internal thread tube 511, which is far away from the guide plate 33;

the clamping jaw assembly 5 further comprises a fixed jaw 52, the fixed jaw 52 is a concave plate, the fixed jaw 52 is rotatably connected with the external threaded rod 512, one concave end of the fixed jaw 52 is arranged away from the external threaded rod 512, and one concave surface of the fixed jaw 52 is an arc surface; the two fixing claws 52 are respectively in close contact with the outer side walls of the two ends of the cylinder, and the cylinder is stably placed at the central position of the diffusivity scale mark 11 under the action of the two fixing claws 52.

The periphery of the slump cone 2 is upwards provided with upper limiting pieces 21 and lower limiting pieces 22 at intervals along the vertical direction; the upper limiting piece 21 comprises a limiting ring plate 211, the limiting ring plate 211 is a circular ring plate, the limiting ring plate 211 is coaxially sleeved on the periphery of the slump cone 2 upwards, the bottom end of the limiting ring plate 211 is in close contact with the upper end face of the fixing claw 52, a blocking side wall 212 is coaxially and fixedly connected to the limiting ring plate 211, the blocking side wall 212 is a circular tube body, the outer diameter of the blocking side wall 212 is equal to that of the limiting ring plate 211, and a space is reserved between the inner side wall of the blocking side wall 212 and the outer side wall of the slump cone 2.

The lower limiting piece 22 is a circular ring plate, the lower limiting piece 22 is positioned below the upper limiting piece 21, and the top end of the lower limiting piece 22 is tightly contacted with the lower end face of the fixed claw 52.

Both ends of the fixed claw 52 in the vertical direction are respectively in close contact with the upper stopper 21 and the lower stopper 22; when the lifting device drives the cylinder to move upwards along the vertical direction, the upper limiting piece 21 is tightly contacted with the fixed claw 52, so that the cylinder is prevented from being separated from the fixed claw 52; when the concrete sample is beaten after being filled into the cylinder, the fixing claws 52 are in close contact with the lower stopper 22, and the fixing claws 52 press the lower stopper 22 downward under the action of the lifting device, thereby enhancing the stability of the slump cone 2.

The implementation principle of the above embodiment is as follows:

the slump cone 2 is placed at the center of the diffusivity scale 11 on the base 1, and the internal threaded pipe 511 and the external threaded rod 512 are relatively rotated to make the fixing claws 52 extend between the upper stopper 21 and the lower stopper 22 and closely contact with the side wall of the slump cone 2, so that the slump cone 2 is stably fixed on the base 1. The concrete sample is loaded into the slump cone 2 for three times, after each time of loading, a pounding hammer is used for uniformly knocking twenty five times along the outer side wall of the slump cone 2 from outside to inside, after tamping, the concrete at the cone opening is smoothed, and the redundant concrete falls into a space formed by the limiting ring plate 211 and the blocking side wall 212, so that the redundant concrete is prevented from falling onto the base 1 to influence the accuracy of the detection result;

then, a driving motor 41 is started, the driving motor 41 simultaneously drives the two screw rods 31 to synchronously rotate in the same direction under the action of a transmission assembly 42, the guide plate 33 is in threaded connection with the screw rods 31, the guide plate 33 is in sliding connection with the guide rod 32, the screw rods 31 rotate to drive the guide plate 33 to move upwards along the vertical direction, the two guide plates 33 simultaneously drive the two groups of clamping jaw assemblies 5 to move upwards, the two groups of clamping jaw assemblies 5 jointly clamp the slump cone 2 to drive the slump cone 2 to move upwards, the concrete naturally slump and flows, after the slump flow is stabilized, the height of the highest point of the concrete pile and the diameter of a diffusion surface are measured, the height of the slump cone 2 minus the height is the slump, and the area of the diffusion surface is the diffusivity.

The condition that the concrete sample in the slump section of thick bamboo 2 flowed when knocking slump section of thick bamboo 2 has effectively been solved in this application, has effectively improved the stability of a slump section of thick bamboo 2, has improved the degree of accuracy of testing result to drive slump section of thick bamboo 2 rebound through elevating gear and clamping jaw assembly 5, effectively reduced measurement personnel's physical labor volume.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a concrete fluidity surveys device, includes base (1), still includes to place in slump section of thick bamboo (2) on base (1), its characterized in that: the base (1) is provided with a fixing device for fixing the slump cone (2); the fixing device comprises two groups of clamping jaw assemblies (5), and the two groups of clamping jaw assemblies (5) are respectively and oppositely arranged on two sides of the slump cone (2);

the clamping jaw assembly (5) comprises a connecting rod (51), and the connecting rod (51) is a rod with a telescopic length; two equal fixedly connected with stationary dog (52) in the relative one end of connecting rod (51), two stationary dog (52) are contradicted with the slump section of thick bamboo (2) lateral wall of corresponding position department respectively and are compressed tightly.

2. The concrete fluidity measuring apparatus according to claim 1, wherein: the lifting device is arranged on the base (1) and used for driving the fixing device to reciprocate along the vertical direction.

3. A concrete fluidity measuring apparatus according to claim 2, wherein: the lifting device comprises two groups of lifting mechanisms (3); the two groups of lifting mechanisms (3) are respectively arranged corresponding to the two groups of clamping jaw assemblies (5);

the lifting mechanism (3) comprises a lead screw (31) rotatably connected with the base (1), the axis direction of the lead screw (31) is arranged along the vertical direction, a guide plate (33) is connected to the lead screw (31) in a threaded manner, and one end of the connecting rod (51) departing from the fixed claw (52) is fixedly connected with the guide plate (33);

the lifting mechanism (3) further comprises a guide rod (32) fixedly connected with the base (1), the axis direction of the guide rod (32) is arranged along the vertical direction, and the guide plate (33) is connected with the guide rod (32) in a sliding manner;

the lifting device also comprises a driving mechanism (4) which drives the two lead screws (31) to rotate simultaneously.

4. A concrete fluidity measuring apparatus according to claim 3, wherein: the driving mechanism (4) comprises a driving motor (41) and a transmission assembly (42); the driving motor (41) is fixed on the base (1), and the output end of the driving motor (41) is coaxially and fixedly connected with one lead screw (31);

the transmission assembly (42) comprises two chain wheels (421) which are respectively and fixedly connected with the lead screw (31) in a coaxial mode, and a chain (422) is connected between the two chain wheels (421) in a meshed mode.

5. The concrete fluidity measuring apparatus according to claim 1, wherein: the connecting rod (51) comprises an internal threaded tube (511) and an external threaded rod (512), and the internal threaded tube (511) is in threaded connection with the external threaded rod (512); the fixing claw (52) is a concave plate, the concave end of the fixing claw (52) is arc-shaped, the concave end of the fixing claw (52) is in close contact with the slump cone (2), and the end, deviating from the concave, of the fixing claw (52) is rotatably connected with the external threaded rod (512).

6. A concrete fluidity measuring apparatus according to claim 2, wherein: an upper limiting piece (21) is arranged on the outer side wall of the slump cone (2), the upper limiting piece (21) is located above the fixed claw (52), and the fixed claw (52) is in close contact with the upper limiting piece (21).

7. The concrete fluidity measuring apparatus according to claim 6, wherein: the upper limiting piece (21) comprises a limiting ring plate (211) coaxially sleeved on the outer side wall of the slump cone (2), and the bottom end of the limiting ring plate (211) is tightly contacted with the fixed claw (52);

the top end of the limit ring plate (211) is coaxially and fixedly connected with a blocking side wall (212), and the limit ring plate (211) and the blocking side wall (212) enclose a circular box body with an upward opening.

8. A concrete fluidity measuring apparatus according to claim 2, wherein: the outer side wall of the slump cone (2) is provided with a lower limiting piece (22), the lower limiting piece (22) is located below the fixed claw (52), and the fixed claw (52) is in close contact with the lower limiting piece (22).

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