CN217543117U - Concrete spraying test device - Google Patents

Abstract

The utility model relates to a sprayed concrete test device, it include electronic slide rail, set up in hydraulic pressure lift platform on electronic slide rail's the slider, set up in the universal joint base of hydraulic pressure lift platform top surface, set up in the rotary driving piece of universal joint base top surface and set up in the spray tube of rotary driving piece output, the axial lead of spray tube with rotary driving piece's rotation axis lead is perpendicular. The utility model discloses a mouth of pipe position of universal joint base and hydraulic lifting platform adjusting spray tube to assist the injection region of electronic slide rail and rotating drive spare adjusting spray tube, whole injection process is by mechanical control, has directly avoided the not enough of original artifical injection concrete, can control the distance between spray tube and the arc in the predetermined range, and has reached the purpose that improves test efficiency.

Description

Concrete spraying test device

Technical Field

The utility model belongs to the technical field of concrete performance testing equipment's technique and specifically relates to a sprayed concrete test device is related to.

Background

Shotcrete is a construction method for casting fine stone concrete by spraying with a pressure spray gun, and is commonly used for casting linings of thin-wall structures such as tunnel linings, walls, ceilings and the like or linings of other structures and protective layers of steel structures. The sprayed concrete is formed by filling cement, sand, stones, water and a certain amount of additives which are prepared in advance into a spraying machine, sending the mixture to a spray head by utilizing high-pressure air, mixing the mixture with an accelerating agent and spraying the mixture to the surface of the rock or the concrete at a high speed.

At present, the sprayed concrete can only test the initial setting time and the final setting time of the net slurry in a laboratory, but the testing is far from sufficient for practical engineering application, and the spraying efficiency, the reasonable mixing amount of the accelerator, the setting time, the spraying thickness, the rebound rate (the proportion of the concrete sprayed on a rock surface to rebound), the strength development and the like need to be considered during practical construction of the sprayed concrete. The test data can not be obtained completely in a laboratory stage, so that the problems of material waste, project quality defect, uncontrollable manufacturing cost and the like caused by the lack of technical guidance of the current concrete spraying construction are caused.

The existing sprayed concrete is sprayed on the inner wall of an arch-shaped plate by a worker holding a spray gun in a test stage, the inner wall of the arch-shaped plate is provided with a net-shaped convex rib, so that the actual working condition can be simulated, parameters directly related to actual construction, such as rebound rate, once spraying thickness, early strength of concrete and the like, can be obtained in a material test stage, and can be used for evaluating the performance of an accelerator, adjusting the mixing proportion of the concrete and adjusting process parameters. However, in the process of manually spraying concrete, rebound concrete and dust generated during spraying can cause damage to the health of workers, and the distance between the spray gun and the arch-shaped plate is difficult to control to be a preset value by manually holding the spray gun, so that the test efficiency is greatly influenced by the technical level of workers and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to the above-mentioned not enough that exists among the prior art and provide a shotcrete test device, it has solved current artifical shotcrete and has influenced the healthy and not high problem of test efficiency of workman easily, has reached the purpose that improves test efficiency.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a sprayed concrete test device, includes electronic slide rail, set up in hydraulic lifting platform on the slider of electronic slide rail, set up in the universal joint base of hydraulic lifting platform top surface, set up in the rotary driving piece of universal joint base top surface and set up in the spray tube of rotary driving piece output, the axial lead of spray tube with the rotary driving piece's rotation axis lead is perpendicular.

By adopting the technical scheme, the sprayed concrete testing device is used for being matched with the arrangement of the arch-shaped plates; before the test, the electric slide rail drives the spray pipe to move to the front side of the arc-shaped concave surface of the arch-shaped plate, and then the pipe orifice of the spray pipe is adjusted to face the arc-shaped concave surface of the arch-shaped plate through the universal joint base and the hydraulic lifting platform; during testing, the rotary driving piece drives the spray pipe to reciprocate within the arc angle range of the arch-shaped plate, meanwhile, the electric slide rail drives the spray pipe to slide along the length direction of the arch-shaped plate, and the spray pipe can spray concrete on the surface of the arch-shaped plate so as to achieve the purpose of detecting concrete performance data; in this in-process, the mouth of pipe position through universal joint base and hydraulic lifting platform adjustment spray tube to assist the injection region with electronic slide rail and rotary driving spare adjustment spray tube, whole injection process is by mechanical control, has directly avoided the not enough of original manual work sprayed concrete, can control the distance between spray tube and the arc at the predetermined range, and has reached the purpose that improves test efficiency.

The utility model discloses further set up to: the hydraulic lifting platform comprises a top plate, a bottom plate arranged on a sliding block of the electric sliding rail, and a scissor arm and a hydraulic cylinder which are arranged between the top plate and the bottom plate, wherein one side of the scissor arm is hinged to the top plate and the bottom plate, the other side of the scissor arm is connected to the top plate and the bottom plate in a sliding mode, the hydraulic cylinder is hinged to the bottom plate, and a piston rod of the hydraulic cylinder is hinged to the scissor arm.

Through adopting above-mentioned technical scheme, during the lift, the piston rod of pneumatic cylinder is flexible, and then drives the scissors fork structure deformation of scissors fork arm to it goes up and down to drive the roof for the roof.

The utility model discloses further set up to: the scissor arm comprises two pairs of support arms arranged in parallel, a connecting shaft hinged on a piston rod of the hydraulic cylinder, and a hinged shaft and a roller which are respectively arranged at two ends of each support arm, wherein the two support arms in each pair are hinged on the connecting shaft in a crossed manner, the hinged shaft on each pair of support arms is hinged on the top plate and the bottom plate respectively, and the roller on each pair of support arms is connected on the top plate and the bottom plate in a sliding manner respectively.

Through adopting above-mentioned technical scheme, when the piston rod of pneumatic cylinder is flexible, the connecting axle is driven thereupon, because the relative roof of articulated shaft and the position of bottom plate are unchangeable, the roller bearing can slide relative roof and bottom plate, and then drives the scissors fork structure deformation that the support arm is constituteed to it goes up and down to drive the roof for the roof.

The utility model discloses further set up to: the universal joint base includes the layer board, set up in the layer board bottom surface just has the gyro wheel of brake block and set up in the duckbilled universal joint of layer board top surface, the wheel face of gyro wheel with the top surface of roof is contradicted.

Through adopting above-mentioned technical scheme, during the experiment, place the universal joint base that will install the spray tube on the roof, then make the gyro wheel locking through control brake block, rethread duckbilled universal joint adjustment spray tube installation angle can, be convenient for change the spray tube.

The utility model discloses further set up to: duckbilled universal joint is including articulated U type bottom plate, switching piece and U type apron from bottom to top in order, first arc wall and second arc wall have been seted up on the U type bottom plate, the third arc wall has been seted up on the U type apron, be provided with on the layer board to slide lock in first fastener on the first arc wall, be provided with on the switching piece to slide lock in second fastener on the second arc wall, slide lock in third fastener on the third arc wall, the axial lead of first arc wall and third arc wall perpendicular to respectively the axial lead of second arc wall.

Through adopting above-mentioned technical scheme, the duckbilled universal joint sets up to three layer construction, only needs the operation of loosening and screwing up first fastener, second fastener or third fastener, and the duckbilled universal joint just can be adjusted the mouth of pipe orientation of spray tube in three axial, and the operation is simple and easy swift.

The utility model discloses further set up to: the central angle of the first arc-shaped groove is 45 to 90 degrees, and the central angles of the second arc-shaped groove and the third arc-shaped groove are 120 to 180 degrees respectively.

By adopting the technical scheme, the angle adjusting efficiency in the range is highest.

The utility model discloses further set up to: the first fastener, the second fastener and the third fastener are respectively provided as bolts.

Through adopting above-mentioned technical scheme, be sliding connection relation between these bolts and first arc wall, second arc wall, the third arc wall, and these bolts and layer board, switching piece are threaded connection relation, and when locking, these bolts contradict in U type bottom plate and U type apron surface respectively to realize sliding and locking of first fastener, second fastener and third fastener.

The utility model discloses further set up to: the rotary driving part comprises a driving motor arranged on the U-shaped cover plate, a first bevel gear arranged on an output shaft of the driving motor, and a second bevel gear which is rotatably connected to the U-shaped cover plate and meshed with the first bevel gear, and the spray pipe is arranged on the second bevel gear.

Through adopting above-mentioned technical scheme, gear drive has the advantage that transmission efficiency is high, the precision is good, and driving motor leads to the mode of just reversing, can drive the spray tube reciprocating swing through first bevel gear and second bevel gear, realizes fan-shaped injection operation.

To sum up, the beneficial technical effects of the utility model are that: the pipe orifice position of the spray pipe is adjusted through the universal joint base and the hydraulic lifting platform, the electric slide rail and the rotary driving piece are used for adjusting the spray area of the spray pipe, the whole spraying process is controlled by a machine, the defects of original manual concrete spraying are directly avoided, the distance between the spray pipe and the arc-shaped plate can be controlled within a preset range, and the purpose of improving the test efficiency is achieved.

Drawings

Fig. 1 is a schematic perspective view of the shotcrete test device of the present invention.

Fig. 2 is a left side view structure diagram of the shotcrete test device of the present invention.

Fig. 3 is a schematic view of the connection relationship between the electric sliding table, the hydraulic lifting platform and the universal joint base.

Fig. 4 is a schematic view of the connection relationship among the universal joint base, the rotary driving member and the nozzle pipe according to the present invention.

In the figure, 1, an electric slide rail; 2. a hydraulic lifting platform; 21. a top plate; 22. a base plate; 23. a scissor arm; 231. a support arm; 232. a connecting shaft; 233. hinging a shaft; 234. a roller; 24. a hydraulic cylinder; 3. a gimbal base; 31. a support plate; 32. a roller; 33. a duckbill gimbal; 331. a U-shaped bottom plate; 332. a patch; 333. a U-shaped cover plate; 334. a first arc-shaped slot; 335. a second arc-shaped slot; 336. a third arc-shaped slot; 337. a first fastener; 338. a second fastener; 339. a third fastener; 4. a rotary drive member; 41. a drive motor; 42. a first bevel gear; 43. a second bevel gear; 5. and (4) a spray pipe.

Detailed Description

In order to make the technical means, creation features, achievement purposes and effects of the present invention clearer and easier to understand, the present invention is further explained below with reference to the accompanying drawings and the detailed description.

Referring to fig. 1, for the utility model discloses a concrete spraying test device, including electronic slide rail 1, set up hydraulic pressure lift platform 2 on electronic slide rail 1's slider, set up in universal joint base 3 of 2 top surfaces of hydraulic pressure lift platform, set up in the rotary driving piece 4 of 3 top surfaces of universal joint base and set up in the spray tube 5 of 4 outputs of rotary driving piece, the axial lead of spray tube 5 is perpendicular with the rotation axis lead of rotary driving piece 4. Wherein, spraying concrete test device is used for cooperating the domeplate to arrange, and hydraulic lifting platform 2 and universal joint base 3 are used for adjusting the mouth of pipe orientation of spray tube 5 in the arc inner wall of domeplate, and the injection region of spray tube 5 is adjusted to electronic slide rail 1 and rotary driving piece 4 to accomplish the concrete spraying test operation of spray tube 5 on the arc inner wall.

Referring to fig. 2 and 3, the hydraulic lifting platform 2 includes a top plate 21, a bottom plate 22 disposed on a slider of the electric sliding rail 1, and a scissors arm 23 and a hydraulic cylinder 24 disposed between the top plate 21 and the bottom plate 22, one side of the scissors arm 23 is hinged to the top plate 21 and the bottom plate 22, the other side is slidably connected to the top plate 21 and the bottom plate 22, the hydraulic cylinder 24 is hinged to the bottom plate 22, and a piston rod of the hydraulic cylinder 24 is hinged to the scissors arm 23. The scissors arm 23 includes at least two pairs of support arms 231 arranged in parallel, a connecting shaft 232 arranged between two adjacent pairs of support arms 231, and a hinge shaft 233 and a roller 234 respectively arranged at two ends of the support arms 231, wherein the two support arms 231 in each pair are hinged to the connecting shaft 232 in a crossed manner, the hinge shaft 233 on each pair of support arms 231 is hinged to the top plate 21 and the bottom plate 22 respectively, and the roller 234 on each pair of support arms 231 is connected to the top plate 21 and the bottom plate 22 respectively in a sliding manner.

When the piston rod of the hydraulic cylinder 24 extends, the connecting shaft 232 is driven along with the piston rod, and since the position of the hinge shaft 233 relative to the top plate 21 and the bottom plate 22 is unchanged, the roller 234 slides relative to the top plate 21 and the bottom plate 22, and further the scissor structure formed by the support arms 231 is driven to deform, so that the top plate 21 is driven to lift relative to the top plate 21.

Referring to fig. 3 and 4, the gimbal base 3 includes a supporting plate 31, a roller 32 disposed on a bottom surface of the supporting plate 31 and having a brake pad, and a duckbill gimbal 33 disposed on a top surface of the supporting plate 31, wherein a wheel surface of the roller 32 abuts against a top surface of the top plate 21. The duckbilled universal joint 33 comprises a U-shaped bottom plate 33122, an adapter sheet 332 and a U-shaped cover plate 333 which are sequentially hinged from bottom to top, a first arc-shaped groove 334 and a second arc-shaped groove 335 are formed in the U-shaped bottom plate 33122, a third arc-shaped groove 336 is formed in the U-shaped cover plate 333, a first fastener 337 which is locked on the first arc-shaped groove 334 in a sliding mode is arranged on the supporting plate 31, a second fastener 338 which is locked on the second arc-shaped groove 335 in a sliding mode is arranged on the adapter sheet 332, a third fastener 339 which is locked on the third arc-shaped groove 336 in a sliding mode is arranged on the adapter sheet 332, and the axial leads of the first arc-shaped groove 334 and the third arc-shaped groove 336 are respectively perpendicular to the axial lead of the second arc-shaped groove 335.

During the experiment, place the universal joint base 3 that will install spray tube 5 on roof 21, then make the locking of gyro wheel 32 through control brake block, rethread duckbilled universal joint 33 adjustment spray tube 5 installation angle can, be convenient for change spray tube 5.5 simultaneously, set up duckbill universal joint 33 into three-layer construction, only need loosen soon and screw up the operation of first fastener 337, second fastener 338 or third fastener 339, duckbill universal joint 33 just can adjust the mouth of pipe orientation of spout 5 in three axial, and the operation is simple and easy swift.

Preferably, the central angle of the first arc-shaped groove 334 is 45 to 90 degrees, and the central angles of the second arc-shaped groove 335 and the third arc-shaped groove 336 are 120 to 180 degrees respectively. The first fastener 337, the second fastener 338 and the third fastener 339 are provided as bolts, respectively. The bolts are slidably connected with the first arc-shaped groove 334, the second arc-shaped groove 335 and the third arc-shaped groove 336, and the bolts are threadedly connected with the supporting plate 31 and the adapter plate 332, and when the bolts are locked, the bolts respectively abut against the surfaces of the U-shaped bottom plate 33122 and the U-shaped cover plate 333, so that the first fastener 337, the second fastener 338 and the third fastener 339 can slide and be locked.

Referring to fig. 4, the rotary driving member 4 includes a driving motor 41 provided on the U-shaped cover 333, a first bevel gear 42 provided on an output shaft of the driving motor 41, a second bevel gear 43 rotatably connected to the U-shaped cover 333 and engaged with the first bevel gear 42, and the nozzle 5 is provided on the second bevel gear 43. The gear transmission has the advantages of high transmission efficiency and good precision, and the driving motor 41 can drive the spray pipe 5 to swing back and forth through the first bevel gear 42 and the second bevel gear 43 in a positive and negative rotation mode, so that the fan-shaped spraying operation is realized.

The implementation principle of the embodiment is as follows: the sprayed concrete test device is used for being matched with the arrangement of the arch plates; before the experiment, electronic slide rail 1 orders about spray tube 5 and removes to the front side of the arc concave surface of domatic board, and rethread universal joint base 3 and hydraulic lifting platform, the mouth of pipe of adjustment spray tube 5 is towards the arc concave surface of domatic board. During testing, the rotary driving part 4 drives the spraying pipe 5 to reciprocate within the arc angle range of the arch-shaped plate, meanwhile, the electric sliding rail 1 drives the spraying pipe 5 to slide along the length direction of the arch-shaped plate, and the spraying pipe 5 can spray concrete on the surface of the arch-shaped plate, so that the purpose of detecting concrete performance data is achieved. In this in-process, the mouth of pipe position through universal joint base 3 and hydraulic lifting platform adjustment spray tube 5 to being assisted with electronic slide rail 1 and rotary driving piece 4 and adjusting the injection region of spray tube 5, whole injection process is by mechanical control, has directly avoided original artifical concrete spraying not enough, can control the distance between spray tube 5 and the arc at the predetermined range, and has reached the purpose that improves test efficiency.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (8)

1. The utility model provides a shotcrete test device which characterized in that: including electronic slide rail (1), set up in hydraulic pressure lift platform (2) on the slider of electronic slide rail (1), set up in universal joint base (3) of hydraulic pressure lift platform (2) top surface, set up in rotary driving spare (4) of universal joint base (3) top surface and set up in spray tube (5) of rotary driving spare (4) output, the axial lead of spray tube (5) with the rotation axis lead of rotary driving spare (4) is perpendicular.

2. A shotcrete testing apparatus as claimed in claim 1, wherein: the hydraulic lifting platform (2) comprises a top plate (21), a bottom plate (22) arranged on a sliding block of the electric sliding rail (1), a scissor arm (23) and a hydraulic cylinder (24) arranged between the top plate (21) and the bottom plate (22), one side of the scissor arm (23) is hinged to the top plate (21) and the bottom plate (22), the other side of the scissor arm is connected to the top plate (21) and the bottom plate (22) in a sliding mode, the hydraulic cylinder (24) is hinged to the bottom plate (22), and a piston rod of the hydraulic cylinder (24) is hinged to the scissor arm (23).

3. A shotcrete testing apparatus according to claim 2, wherein: the scissor arm (23) comprises at least two pairs of support arms (231) which are arranged in parallel, a connecting shaft (232) arranged between the two adjacent pairs of support arms (231), and a hinge shaft (233) and a roller (234) which are respectively arranged at two ends of each support arm (231), wherein the two support arms (231) in each pair are hinged on the connecting shaft (232) in a crossed manner, the hinge shaft (233) on each pair of support arms (231) is hinged on the top plate (21) and the bottom plate (22) respectively, and the roller (234) on each pair of support arms (231) is respectively connected on the top plate (21) and the bottom plate (22) in a sliding manner.

4. A shotcrete test apparatus as claimed in claim 2, wherein: the universal joint base (3) comprises a supporting plate (31), a roller (32) and a duckbilled universal joint (33), wherein the roller (32) is arranged on the bottom surface of the supporting plate (31) and is provided with a brake pad, the duckbilled universal joint (33) is arranged on the top surface of the supporting plate (31), and the wheel surface of the roller (32) is abutted to the top surface of the top plate (21).

5. A shotcrete test device according to claim 4, wherein: duckbilled universal joint (33) are including articulated U type bottom plate (331), adaptor piece (332) and U type apron (333) from bottom to top in order, first arc wall (334) and second arc wall (335) have been seted up on U type bottom plate (331), third arc wall (336) have been seted up on U type apron (333), be provided with on layer board (31) and slide and lock in first fastener (337) on first arc wall (334), be provided with on adaptor piece (332) slide and lock in second fastener (338) on second arc wall (335), slide and lock in third fastener (339) on third arc wall (336), the axial lead of first arc wall (334) and third arc wall (336) is perpendicular to respectively the axial lead of second arc wall (335).

6. A shotcrete testing apparatus according to claim 5, wherein: the central angle of the first arc-shaped groove (334) ranges from 45 degrees to 90 degrees, and the central angles of the second arc-shaped groove (335) and the third arc-shaped groove (336) range from 120 degrees to 180 degrees respectively.

7. A shotcrete testing apparatus according to claim 5, wherein: the first fastener (337), the second fastener (338) and the third fastener (339) are respectively provided as bolts.

8. A shotcrete test device according to claim 5, wherein: the rotary driving part (4) comprises a driving motor (41) arranged on a U-shaped cover plate (333), a first bevel gear (42) arranged on an output shaft of the driving motor (41), and a second bevel gear (43) which is rotatably connected to the U-shaped cover plate (333) and meshed with the first bevel gear (42), and the spray pipe (5) is arranged on the second bevel gear (43).

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