CN211122248U

CN211122248U - Electric anti-bending cement testing machine with protection device

Info

Publication number: CN211122248U
Application number: CN201921837408.9U
Authority: CN
Inventors: 施蓓晶; 张宸源
Original assignee: Nantong Jitai New Building Materials Co ltd
Current assignee: Nantong Jitai New Building Materials Co ltd
Priority date: 2019-10-26
Filing date: 2019-10-26
Publication date: 2020-07-28
Anticipated expiration: 2029-10-26

Abstract

The utility model discloses a cement electric bending resistance testing machine with a protection device, which relates to the technical field of cement strength testing and aims to solve the technical problem that a microswitch is damaged due to vibration because a cement sample is suddenly broken in the testing process and the microswitch box is knocked but the microswitch box is not provided with a buffer device and is used for multiple times; the micro-gap switch box roof is provided with the stay tube, slides in the stay tube and is connected with the butt joint pole, and the butt joint pole laminates mutually with micro-gap switch's contact, and the stay tube roof is provided with the cushion rubber pipe, and the inside deformation cavity that is provided with of cushion rubber pipe. The effect of buffering the vibration of the micro switch to reduce the damage to the micro switch and amplifying the reading through the magnifier to enable the reading to be more accurate is achieved.

Description

Electric anti-bending cement testing machine with protection device

Technical Field

The utility model relates to a cement strength test technical field, more specifically say, it relates to an electronic anti testing machine that rolls over of cement with protection device.

Background

The electric bending strength tester for cement is mainly used for testing the bending strength of cement soft-refining mortar in cement factories, building construction units and scientific research units of related professional colleges and universities, and can be used for testing the bending strength of other non-metal brittle materials.

The existing Chinese patent with the granted bulletin number of CN202033258U discloses a cement electric anti-bending testing machine, which comprises a base, wherein a stand column is arranged on the base, a bracket is arranged on the stand column, a positioning plate is arranged at one end of the bracket, a fulcrum tool rest is arranged at the other end of the bracket, a micro switch box is arranged on the bracket at the positioning plate, a main lever and a lead screw are arranged between the positioning plate and the fulcrum tool rest, sliding weights are arranged on the main lever and the lead screw, a hanging rod is arranged at the position of the fulcrum tool rest, a counterweight sliding weight and a motor are arranged on one side of the hanging rod, the motor is rotationally connected with the lead screw, a connecting tool rest is arranged at the lower part of the hanging rod, a sub-fulcrum tool rest is arranged at the lower part of the bracket, a sub-lever is arranged between the connecting tool rest and the sub-fulcrum tool rest, a sub-point tool; the testing machine has good testing effect and convenient use.

However, in the test process of the electric bending resistance testing machine, the cement sample is suddenly broken in the test process, so that the connecting plate can knock the microswitch box, and the microswitch box is not provided with a buffer device, so that the microswitch box is damaged due to vibration after being used for multiple times, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an electronic bending test machine of cement with protection device, it has and cushions in order to reduce to the micro-gap switch harm micro-gap switch's vibration to reduce because of the micro-gap switch damages the advantage that produces the influence to the result accuracy.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the device comprises a base, an upright post and a bracket, wherein the upright post is fixed in the middle of the base, and the bracket is fixed at one end of the upright post, which is far away from the base; one end of the bracket is rotatably connected with a main lever, the other end of the bracket is fixedly connected with a microswitch box, a microswitch is arranged in the microswitch box, and the main lever is connected with the main lever in a sliding way; the method is characterized in that: the micro-gap switch box top wall is provided with the stay tube, it is connected with the butt joint pole to slide in the stay tube, the butt joint pole laminates with micro-gap switch's contact mutually, the stay tube roof is provided with the cushion rubber pipe, cushion rubber pipe inside is provided with the deformation cavity.

Through adopting above-mentioned technical scheme, butt pole slides in the stay tube and has the position that the cushion rubber pipe has injectd butt pole downgoing. When the abutting rod is abutted by the connecting plate and moves downwards to the buffer rubber tube, the impact of the connecting plate directly acts on the buffer rubber tube. Because the deformation cavity is formed in the buffer rubber tube, the buffer rubber tube has high flexibility and is easy to deform, so that residual impact after the connecting plate drives the abutting rod to trigger the microswitch can be buffered, the impact and the damage of vibration generated by the impact to the microswitch are effectively protected, and the inaccuracy of a test result caused by the damage of the microswitch is reduced.

Furthermore, the one end that the butt joint pole is located the cushion rubber tube top is provided with the butt flange.

Through adopting above-mentioned technical scheme, butt flange threaded connection has increased the area of contact between butt joint pole and the connecting plate on the butt joint pole to make the connecting plate better butt joint pole down. The setting on the butt edge of a wing has increased the area of contact of connecting plate with the cushion rubber pipe top surface simultaneously, is more convenient for cushion the effort of connecting plate on the cushion rubber pipe.

Further, the one end that the butt pole kept away from the butt flange is provided with the butt board.

Through adopting above-mentioned technical scheme, setting up of butt plate has increased the area of contact of butt rod with micro-gap switch to increase the effective area of micro-gap switch contact, improved micro-gap switch's validity.

Further, a buffering return spring is fixedly connected between the abutting plate and the top wall of the microswitch box.

Through adopting above-mentioned technical scheme, buffering reset spring's setting cushions the impact that the butt rod descends when the butt plate moves for micro-gap switch box roof to make the butt rod reset to original position after removing external force.

Further, a protective rubber pad is arranged on the surface of the abutting plate, which is back to the buffering return spring.

Through adopting above-mentioned technical scheme, the setting of protective rubber pad has set up the one deck protective layer on the surface of butt joint board to protect micro-gap switch when the butt joint board is down, further alleviate the damage that causes micro-gap switch.

Furthermore, a magnifying glass is arranged at the joint of the sliding weight and the main lever.

Through adopting above-mentioned technical scheme, the setting of magnifying glass has carried out the amplification to the lateral wall department of sliding weight to make operating personnel more clear to the reading, the reading is more accurate, has improved experimental degree of accuracy.

Furthermore, a support frame is fixed on the sliding weight, clamping feet are respectively arranged at two ends of the support frame, anti-skid rubber pads are arranged on the surfaces, facing the sliding weight, of the clamping feet, and the anti-skid rubber pads are abutted to the side wall of the sliding weight.

Through adopting above-mentioned technical scheme, the setting of anti-skidding rubber pad is convenient for through the card foot with the support frame joint on the sliding weight to be convenient for fix the support frame.

Furthermore, one end of the antiskid rubber pad, which is far away from the support frame, is provided with a rubber bump clamped with the sliding weight.

Through adopting above-mentioned technical scheme, rubber bump's setting can be fixed further to the card foot, reduces the probability that the card foot drops along its length direction, and the support frame of being convenient for is fixed on the sliding weight more steadily.

To sum up, the utility model discloses following beneficial effect has:

1. the technology that the supporting tube, the abutting rod, the buffer rubber tube and the deformation cavity are matched is adopted, so that the effect of effectively buffering the downward impact of the connecting plate to reduce the damage to the micro switch is generated;

2. the technology that the abutting flange, the abutting plate, the buffering return spring and the protective rubber pad are matched is adopted, so that the effect of further buffering impact is achieved;

3. the matched technology of the magnifier, the support frame, the clamping feet, the anti-skidding rubber pads and the rubber bumps is adopted, so that the effect that the magnifier is fixed on the side wall of the sliding weight to make the reading clearer is achieved.

Drawings

FIG. 1 is a schematic overall structure diagram of an electric anti-bending cement testing machine with a protection device in an embodiment;

FIG. 2 is a schematic diagram of an embodiment for revealing structure at the microswitch box;

FIG. 3 is a schematic diagram for showing the structure at the magnifying glass in the embodiment.

In the figure: 1. a base; 11. a column; 12. a bracket; 121. a main lever; 1211. a sliding weight; 1212. a connecting plate; 122. a microswitch box; 1221. a support plate; 1222. a fixing plate; 1223. a microswitch; 3. supporting a tube; 31. a butting rod; 311. abutting the flange; 312. a butt joint plate; 3121. protecting the rubber pad; 313. a buffer return spring; 32. a buffer rubber tube; 321. deforming the cavity; 4. a magnifying glass; 41. a support frame; 411. clamping a pin; 4111. an anti-skid rubber pad; 4112. a rubber bump; 42. a support rod.

Detailed Description

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

Example (b):

the utility model provides an electronic bending test machine of cement with protection device, refers to figure 1, and it includes base 1, stand 11 and bracket 12, and stand 11 is inserted and is established and fix the intermediate position at base 1 through the bolt, and bracket 12 is fixed in the stand 11 one end of keeping away from base 1. One end of the bracket 12 is rotatably connected with a main lever 121, and the other end is fixedly connected with a microswitch box 122. The main lever 121 is provided with scales and connected with a sliding weight 1211 in a sliding manner, the microswitch box 122 is provided with a microswitch 1223, and one end of the main lever 121 close to the microswitch box 122 is fixedly welded with a connecting plate 1212.

Referring to fig. 2, the microswitch box 122 includes two support plates 1221 along the length of the bracket 12 and a fixing plate 1222 at the top end of the support plate 1221, and the fixing plate 1222 is fixed to the support plate 1221 by bolts. The micro switch 1223 is fixed between the two support plates 1221 by screws and is located on the upper surface of the bracket 12. The micro-switch box 122 is provided at a top wall thereof with a support pipe 3, and the support pipe 3 is integrally formed on an upper surface of the fixing plate 1222 and communicates with the interior of the micro-switch box 122. A butting rod 31 is slidably connected in the support tube 3 in a clearance fit manner, and the butting rod 31 freely slides in the support rod 42 and the fixing plate 1222; the abutting rod 31 is inserted between the two supporting plates 1221 and attached to the contact of the microswitch 1223.

Referring to fig. 2, a cushion rubber tube 32 is provided at the top end of the support tube 3, the cushion rubber tube 32 is in clearance fit with the abutment rod 31, and the outer diameter of the cushion rubber tube 32 is the same as the outer diameter of the support tube 3. The cushion rubber tube 32 is fixed to the top wall of the support tube 3 by adhesion to cushion the impact of the link plate 1212. A deformation cavity 321 is arranged in the buffer rubber tube 32, and the deformation cavity 321 is annular and is arranged along the circumferential direction of the buffer rubber tube 32; the deforming cavity 321 extends radially along the cushion rubber tube 32 to improve flexibility of the cushion rubber tube 32.

Referring to fig. 2, one end of the abutting rod 31, which is located at the top of the buffer rubber tube 32, is provided with an abutting flange 311, and the abutting flange 311 is screwed on the side wall of the abutting rod 31; the upper surface of the abutment flange 311 is flush with the end surface of the abutment post 31 to increase the contact area between the abutment post 31 and the web 1212.

Referring to fig. 2, the end of the abutment lever 31 close to the microswitch 1223 is provided with an abutment plate 312, the abutment plate 312 and the abutment lever 31 are integrally formed, and the abutment plate 312 is cylindrical to increase the contact area between the abutment lever 31 and the microswitch 1223.

Referring to fig. 2, protective rubber pad 3121 is provided on the surface of abutting plate 312 facing micro switch 1223, and protective rubber pad 3121 is fixed to the surface of abutting plate 312 by adhesion, so as to add a side protective layer to the surface of abutting plate 312, thereby protecting micro switch 1223.

Referring to fig. 2, a buffer return spring 313 is fixedly connected between the abutting plate 312 and the top wall of the micro switch box 122, the buffer return spring 313 is sleeved on the abutting rod 31, one end of the buffer return spring 313 is welded and fixed on the abutting plate 312, and the other end of the buffer return spring is welded and fixed on the fixing plate 1222, so as to buffer the impact of the downward movement of the abutting rod 31 when the abutting rod 31 moves downward.

Referring to fig. 3, a magnifying glass 4 is disposed at a position where the weight 1211 is attached to the main lever 121, and the magnifying glass 4 is detachably connected to the weight 1211. A support frame 41 is fixed on the sliding weight 1211, clamping feet 411 are arranged at two ends of the support frame 41, anti-skid rubber pads 4111 are arranged on the surfaces, facing the sliding weight 1211, of the two clamping feet 411, the anti-skid rubber pads 4111 are fixedly adhered to the opposite side walls of the clamping feet 411, and the anti-skid rubber pads 4111 are abutted against the side walls of the sliding weight 1211; the sliding weight 1211 is clamped between the two anti-skid rubber pads 4111 in an interference fit manner to fix the support frame 41.

Referring to fig. 3, one end of the anti-skid rubber pad 4111, which is far away from the support frame 41, is provided with a rubber bump 4112 clamped with the sliding weight 1211, the rubber bump 4112 and the anti-skid rubber pad 4111 are integrally formed, an outer side wall of the rubber bump 4112 is provided with an arc-shaped guide surface along the length direction of the anti-skid rubber pad 4111, and the sliding weight 1211 is clamped between the rubber bump 4112 and the support frame 41 in an interference fit manner.

Referring to fig. 3, the supporting rod 42 is integrally formed on the supporting frame 41, the magnifier 4 is screwed on the supporting rod 42, and the magnifier 4 is located at the joint of the side wall of the sliding weight 1211 and the main lever 121, so that the scales can be seen clearly.

The working principle is as follows:

when the sample breaks on the testing machine, the impact of connecting plate 1212 makes butt flange 311 by the butt of connecting plate 1212, and buffering reset spring 313 is stretched this moment to the impact of descending connecting plate 1212 cushions, and butt plate 312 is direct to be laminated mutually with micro-gap switch 1223's contact, so butt plate 312 can trigger micro-gap switch 1223 as long as slightly descend. The butt flange 311 compresses the cushion rubber tube 32 in the process of being butted by the connecting plate 1212 and descending, so that the cushion rubber tube 32 deforms, and further cushions the impact. Simultaneously, the protection rubber pad 3121 on the surface of the abutting plate 312 protects the micro switch 1223, so that the damage caused by the impact of the connecting plate 1212 on the micro switch 1223 is reduced, the service life of the micro switch 1223 is prolonged, and the influence of the damage of the micro switch 1223 on the test result is reduced.

Meanwhile, when the final result is read, the joint of the weight 1211 and the main lever 121 is observed through the magnifier 4. The magnifier 4 magnifies the joint of the sliding weight 1211 and the main lever 121, so that an operator can read out readings more easily and clearly, and errors caused by misreading are reduced.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The cement electric anti-bending testing machine with the protection device comprises a base (1), an upright post (11) and a bracket (12), wherein the upright post (11) is fixed at the middle position of the base (1), and the bracket (12) is fixed at one end, far away from the base (1), of the upright post (11); one end of the bracket (12) is rotatably connected with a main lever (121), the other end of the bracket is fixedly connected with a microswitch box (122), a microswitch (1223) is arranged in the microswitch box (122), and a sliding weight (1211) is connected to the main lever (121) in a sliding manner; the method is characterized in that: the micro-gap switch box is characterized in that a supporting pipe (3) is arranged on the top wall of the micro-gap switch box (122), a butt rod (31) is connected to the supporting pipe (3) in a sliding mode, the butt rod (31) is attached to a contact of the micro-gap switch (1223), a buffer rubber pipe (32) is arranged on the top wall of the supporting pipe (3), and a deformation cavity (321) is formed in the buffer rubber pipe (32).

2. The electric anti-bending tester for cement with protection device of claim 1 is characterized in that: and one end of the abutting rod (31) positioned at the top of the buffer rubber pipe (32) is provided with an abutting flange (311).

3. The electric anti-bending tester for cement with protection device of claim 2 is characterized in that: and one end, far away from the abutting flange (311), of the abutting rod (31) is provided with an abutting plate (312).

4. The electric anti-bending tester for cement with protection device of claim 3 is characterized in that: and a buffer return spring (313) is fixedly connected between the abutting plate (312) and the top wall of the microswitch box (122).

5. The electric anti-bending tester for cement with protection device of claim 4 is characterized in that: and a protective rubber pad (3121) is arranged on the surface of the abutting plate (312) back to the buffer return spring (313).

6. The electric anti-bending tester for cement with protection device of claim 1 is characterized in that: the sliding weight (1211) is provided with a magnifying glass (4) at the joint of the sliding weight and the main lever (121).

7. The electric anti-bending tester for cement with protection device of claim 6, wherein: a support frame (41) is fixed on the sliding weight (1211), clamping feet (411) are respectively arranged at two ends of the support frame (41), an anti-skid rubber pad (4111) is arranged on the surface, facing the sliding weight (1211), of the clamping feet (411), and the anti-skid rubber pad (4111) abuts against the side wall of the sliding weight (1211).

8. The electric anti-bending tester for cement with protection device of claim 7 is characterized in that: one end of the anti-skid rubber pad (4111) far away from the support frame (41) is provided with a rubber bump (4112) clamped with the sliding weight (1211).