Strength tester

Abstract

The invention relates to the technical field of experimental detection, and discloses a strength tester which is characterized in that a motor is fixed on one side in a case, the output end of the motor is connected with a gear shaft of a driving wheel through a coupling, a fluted disc of the driving wheel is mounted in a transmission shell, driven wheels meshed with the driving wheel are uniformly mounted in the transmission shell, and the driven wheels are circumferentially distributed; a gear shaft of the driven wheel is connected with a driving wheel seat; the periphery of the transmission shell is sleeved with a bearing installation sleeve installed in the machine box through a supporting plate, a horizontal supporting rod is fixed to the middle of the transmission shell, the other end of the horizontal supporting rod is installed on a support through a bearing, the bottom of the support is fixed to the machine box, and the end, close to the support, of the horizontal supporting rod is fixedly sleeved with a fixing disc in a penetrating mode. An ejector pin is mounted on the fixed disc opposite to the driving wheel seat; and a roller which rotates synchronously with the driving wheel seat is clamped between the ejector pin and the driving wheel seat.

Description

Technical Field

[0001] The invention relates to the technical field of experimental detection, and in particular to an activated carbon particle detection device, specifically a strength tester. Background Art

[0002] ‌The strength test of activated carbon is directly related to the service life, adsorption efficiency and impact resistance of activated carbon. It is one of the key physical performance indicators and has a direct impact on the application and use effect of activated carbon. Specifically, activated carbon with higher strength is less likely to break and wear, so it can maintain a longer service life, better maintain the particle shape, provide a larger specific surface area, and thus improve the adsorption efficiency. It can withstand greater mechanical shocks and is suitable for filtration and adsorption tasks in high-pressure environments. It is of great significance to reduce replacement frequency and reduce costs, and is particularly important for application scenarios that require efficient adsorption.

[0003] In order to ensure the quality and performance of activated carbon, using an activated carbon strength tester to test its strength is an important quality control method.

[0004] The strength tester is based on GB / T7702.3-2008, GJB6239.3-2008 and other standards. Under specified conditions, the sample is placed in a drum equipped with steel balls. Through the mechanical transmission of the drum, the sample is worn. The change in the particle size of the damaged sample is measured, and the mass fraction of the sample retained on the test sieve to the mass fraction of the original sample is used as the sample strength.

[0005] This index is mainly used to evaluate the strength performance parameters of the adsorption material, in order to provide basic data reference for other treatments of the adsorption material. The strength is tested using a strength tester. The strength tester commonly used in laboratories currently uses a belt drive combined with a motor to control the speed, two rollers are placed horizontally, and the roller is placed on the roller. The rotation of the roller drives the roller to rotate, and the test is carried out using an external timer to control the time.

[0006] During the strength test, the rotation of the drum and the roller was not synchronized, the drum speed was unstable, and the belt was prone to loosening and breaking, which forced the experiment to be terminated and the test data could not be recorded, resulting in the failure of the experiment. Summary of the invention

[0007] The present invention provides a strength tester to solve the problems in the current strength test that the strength tester cannot provide uniform and stable rotation of the roller and the test failure is easily caused by belt loosening or breaking.

[0008] The present invention is implemented by the following technical solutions: A strength tester comprises a chassis, a motor is fixed on one side of the chassis, an output end of the motor is connected to the gear shaft of a driving wheel through a coupling, a toothed disc of the driving wheel is installed in a transmission housing, driven wheels meshing with the driving wheel are evenly installed in the transmission housing, the driven wheels are distributed circumferentially, and the gear shaft of the driven wheel is connected to a driving wheel seat; a bearing mounting sleeve is sleeved on the outer periphery of the transmission housing and installed in the chassis through a supporting plate, a horizontal support rod is fixed in the middle of the transmission housing, the other end of the horizontal support rod is installed on a bracket through a bearing, the bottom of the bracket is fixed on the chassis, a fixing disk is sleeved and fixed on one end of the horizontal support rod close to the bracket, and an ejector is installed on the fixing disk facing the driving wheel seat; a roller rotating synchronously with the driving wheel seat is clamped between the ejector and the driving wheel seat.

[0009] During implementation, it includes a chassis, a motor is fixed on one side of the chassis, a sensor is installed on the output end of the motor, which is used to monitor the output speed of the motor, and then the speed of the roller is calculated by the gear ratio of the driving wheel and the driven wheel; a chassis partition is provided in the chassis, the motor is installed on one side of the chassis partition, the coupling passes through the chassis partition and is connected to the driving wheel installed on the other side of the chassis partition, that is, the coupling passes through the chassis partition but does not contact the chassis partition; a flap door is installed on the side of the chassis where the transmission housing is installed, which is used to take and place the roller. When conducting strength tests, the flap door is closed to provide an extra layer of safety for the staff.

[0010] The output end of the motor is connected to the gear shaft of the driving wheel through a coupling, the gear plate of the driving wheel is installed in the transmission housing, the driving wheel is located in the center of the transmission housing, and the driven wheels meshing with the driving wheel are evenly installed in the transmission housing. The driven wheels are distributed circumferentially, and the gear shaft of the driven wheel is connected to the driving wheel seat; specifically, one end of the gear shaft of the driven wheel is rotatably installed in the transmission housing through a shaft nut, and the other end of the gear shaft of the driven wheel extends out of the transmission housing to connect to the driving wheel seat; the gear shaft of the driving wheel and the gear shaft of the driven wheel extend from the transmission housing in opposite directions; The outer periphery of the transmission housing is provided with a bearing mounting sleeve which is installed in the chassis through a support plate. The bottom of the support plate is fixed to the bottom surface of the chassis. The upper part of the support plate is provided with a mounting hole for mounting a plunger. The mounting hole is provided with a plunger which is clamped on the outer periphery of the bearing mounting sleeve. That is, the transmission housing can rotate in the bearing mounting sleeve. When the drum is installed, the transmission housing rotates to turn out the drum away from the flip door, so as to facilitate the taking and placing of the drum.

[0011] A horizontal support rod is fixed in the middle of the transmission housing, and the horizontal support rod can be locked. The other end of the horizontal support rod is installed on the bracket through a bearing, and the bottom of the bracket is fixed on the chassis. A fixed disk is fixed on one end of the horizontal support rod close to the bracket, and a thimble is installed at the fixed disk opposite to the driving wheel seat for jacking the roller; specifically, an thimble installation cylinder is installed on the fixed disk, and a cylinder cover is clamped on the end surface of the thimble installation cylinder facing the roller, and an thimble is inserted into the thimble installation cylinder, and the needle head of the thimble extends out of the cylinder cover, and the tail of the thimble extends out of the thimble installation cylinder, and an adjusting handle is screwed on the thimble installation cylinder. By pulling the adjusting handle, the needle head of the thimble is recovered into the thimble installation cylinder, which is convenient for the installation of the roller. After releasing the adjusting handle, the thimble installs the roller between the driving wheel seat and the thimble; an annular convex is fixed in the middle of the thimble, and a spring is installed between the annular convex and the inner end surface of the thimble installation cylinder.

[0012] A roller that rotates synchronously with the driving wheel seat is clamped between the ejector pin and the driving wheel seat. One end of the roller is sealed by a roller cover. A freely movable steel ball is installed in the roller. When the sample is placed in the roller and mixed with the steel ball, the sample is worn through the mechanical transmission of the roller. A pit is provided in the middle of the end surface where the roller and the ejector pin cooperate. The needle head of the ejector pin is pressed against the pit of the roller. On the one hand, the contact area is increased, and on the other hand, it is convenient for the roller to be installed and aligned during installation, so that the roller rotates along the axis.

[0013] When in use, place the sample in the drum and mix it with the steel balls in the drum. Cover the drum cover and pull the adjusting handle outward. The needle head of the ejector pin will be retracted into the ejector mounting tube and the annular convex will approach the inner end surface of the ejector mounting tube. The annular convex compresses the spring and one end of the drum is pressed against the driving wheel seat. The adjusting handle is released and the needle head of the ejector pin is pressed against the pit. The drum is gently shaken and rotated axially to be in the correct position. The installation of one drum is completed.

[0014] Rotate the fixed plate, the fixed plate drives the horizontal support rod to rotate, and then drives the transmission housing to rotate in the bearing mounting sleeve, so as to realize the switching of the roller installation position, that is, rotate the installed roller to the bottom, away from the flip door, and rotate the driving wheel seat without the roller installed out to facilitate the installation of the roller; repeat the above steps to install all the rollers between the driving wheel seat and the ejector pin.

[0015] When testing the strength, keep the horizontal support rod and the transmission housing from rotating. The output end of the motor drives the driving wheel to rotate through the coupling, and the driving wheel drives the driven wheel. The driving wheel seat and the driven wheel rotate synchronously, and then the driving wheel seat drives the drum to rotate, so as to realize the strength test of the sample in the drum. At this time, at the other end face of the drum, the ejector pin presses the drum, and the ejector pin contacts the pit in an arc-shaped surface with a small contact area. The ejector pin does not rotate, and the rotation is uniform and stable.

[0016] Compared with the prior art, this application has the following beneficial effects: The strength tester provided by the present invention realizes uniform and stable rotation of four sets of rollers under the drive of the driving wheel seat, the roller rotation speed is stable and easy to adjust, and the roller is easy to disassemble, and the four sets of rollers can be supported, rotated, and the speed measurement can be realized, meeting the requirements of GB / T7702.3-2008. The device can be combined with integrated and modular design, and through an industrial control computer, dynamic data acquisition is used to realize real-time display of the speed during the test process and control of the test time.

[0017] The device has a stable design and a low failure rate, and can effectively replace the strength tester used in the prior art, providing powerful technical support for the strength test of activated carbon and facilitating its promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure in this application.

[0019] Figure 2 This is a schematic diagram of the installation of the ejector pin in this application.

[0020] Figure 3 This is a schematic diagram of the external structure in this application.

[0021] In the figure: 1-motor, 2-coupling, 3-drum, 4-transmission housing, 5-bearing mounting sleeve, 6-driving wheel seat, 7-support plate, 8-horizontal support rod, 9-bracket, 10-fixed plate, 11-thimble, 1101-ring convex, 12-thimble mounting cylinder, 1201-cylinder cover, 13-adjusting handle, 14-plunger, 15-shaft nut, 16-chassis, 17-chassis partition, 18-flip door. DETAILED DESCRIPTION

[0022] The present invention is described below in conjunction with specific embodiments.

[0023] A strength tester, such as Figures 1 to 3 As shown: it includes a chassis 16, a motor 1 is fixed on one side of the chassis 16, and a sensor is installed on the output end of the motor 1 for monitoring the output speed of the motor, and then the speed of the drum is calculated by the gear ratio of the driving wheel and the driven wheel; a chassis partition 17 is provided in the chassis 16, the motor 1 is installed on one side of the chassis partition 17, the coupling 2 passes through the chassis partition 17 and is connected to the driving wheel installed on the other side of the chassis partition 17, that is, the coupling 2 passes through the chassis partition 17 but does not contact the chassis partition 17; a flip door 18 is installed on the side of the chassis 16 where the transmission housing 4 is installed, which is used to take and place the drum 3. When performing a strength test, the flip door is closed to provide an extra layer of safety for the staff.

[0024] The output end of the motor 1 is connected to the gear shaft of the driving wheel through the coupling 2. The gear plate of the driving wheel is installed in the transmission housing 4. The driving wheel is located in the center of the transmission housing 4. The driven wheels meshing with the driving wheel are evenly installed in the transmission housing 4. In this embodiment, four rollers are provided, that is, four driven wheels are provided. The driven wheels are distributed around the circumference of the driving wheel, and the gear shaft of the driven wheel is connected to the driving wheel seat 6; specifically, one end of the gear shaft of the driven wheel is rotatably installed in the transmission housing 4 through the shaft nut 15, and the other end of the gear shaft of the driven wheel extends out of the transmission housing 4 to connect to the driving wheel seat 6; the gear shaft of the driving wheel and the gear shaft of the driven wheel extend from the transmission housing 4 in opposite directions; The outer periphery of the transmission housing 4 is sleeved with a bearing mounting sleeve 5 mounted in the chassis 16 through a support plate 7. The bottom of the support plate 7 is fixed to the bottom surface of the chassis 16. The upper portion of the support plate 7 is provided with a mounting hole for mounting a plunger 14. The mounting hole is inserted with a plunger 14 that is clamped on the outer periphery of the bearing mounting sleeve 5; that is, the transmission housing 4 can rotate in the bearing mounting sleeve 5. When the drum is installed, the transmission housing rotates to turn out the drum 3 away from the flip door 18, so that the drum 3 can be taken in and put in.

[0025] A horizontal support rod 8 is fixed to the middle of the transmission housing 4, and the horizontal support rod 8 can be locked. The other end of the horizontal support rod 8 is mounted on the bracket 9 through a bearing. The bottom of the bracket 9 is fixed to the chassis 16. A fixed disk 10 is fixed to one end of the horizontal support rod 8 close to the bracket 9. A thimble 11 is installed at the fixed disk 10 facing the driving wheel seat 6 for jacking the roller 3. Specifically, an thimble installation cylinder 12 is installed on the fixed disk 10, and a cylinder cover 1201 is clamped on the end surface of the thimble installation cylinder 12 facing the roller 3. The cylinder 12 is provided with an ejector 11, the needle head of the ejector 11 extends out of the cylinder cover 1201, the tail of the ejector 11 extends out of the ejector installation cylinder 12, and an adjusting handle 13 is screwed on the ejector installation cylinder 12. By pulling the adjusting handle 13, the needle head of the ejector is recovered into the ejector installation cylinder 12, which is convenient for the installation of the drum 3. After releasing the adjusting handle 13, the ejector mounts the drum between the driving wheel seat 6 and the ejector 11. A ring convex 1101 is fixed to the middle of the ejector 11, and a spring is installed between the ring convex 1101 and the inner end surface of the ejector installation cylinder 12.

[0026] A roller 3 that rotates synchronously with the driving wheel seat 6 is clamped between the ejector pin 11 and the driving wheel seat 6. One end of the roller 3 is sealed by a roller cover. A freely movable steel ball is installed in the roller. When the sample is placed in the roller 3 and mixed with the steel ball, the sample is worn by the mechanical transmission of the roller 3. A pit is provided in the middle of the end surface where the roller 3 and the ejector pin 11 cooperate. The needle head of the ejector pin 11 is pressed against the pit of the roller. On the one hand, the contact area is increased, and on the other hand, it is convenient for the roller to be installed and aligned during installation, so that the roller rotates along the axis.

[0027] When in use, place the sample in the roller 3 and mix it with the steel balls in the roller. Cover the roller cover and pull the adjusting handle 13 outward. The needle head of the ejector pin is retracted into the ejector mounting tube 12. The annular protrusion 1101 approaches the inner end surface of the ejector mounting tube 12. The annular protrusion 1101 compresses the spring and presses one end of the roller 3 against the driving wheel seat 6. Release the adjusting handle 13 and press the needle head of the ejector pin against the pit. Gently shake the roller 3 and rotate it axially to achieve the correct installation position. The installation of one roller is completed.

[0028] The fixed plate 10 is rotated, and the fixed plate 10 drives the horizontal support rod 8 to rotate, and then drives the transmission housing 4 to rotate in the bearing mounting sleeve 5, so as to realize the switching of the drum installation position, that is, the installed drum is rotated downward, that is, away from the flip door 18, and the driving wheel seat 6 without the drum installed is rotated out, so as to facilitate the installation of the drum; repeat the above steps to install all the drums between the driving wheel seat 6 and the ejector pin 11.

[0029] When testing the strength, keep the horizontal support rod 8 and the transmission housing 4 from rotating, the output end of the motor drives the driving wheel to rotate through the coupling 2, the driving wheel drives the driven wheel, the driving wheel seat 6 rotates synchronously with the driven wheel, and then the driving wheel seat 6 drives the roller 3 to rotate, so as to realize the strength test of the sample in the roller. At this time, at the other end face of the roller 3, the ejector pin presses the roller 3, the ejector pin 11 contacts the pit in an arc-shaped surface, the contact area is small, the ejector pin 11 does not rotate, and the rotation is uniform and stable.

[0030] The scope of protection claimed by the present invention is not limited to the above specific embodiments. For those skilled in the art, the present invention may have various deformations and changes. Any modifications, improvements and equivalent substitutions made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A strength tester, characterized in that: It comprises a chassis (16), a motor (1) being fixed on one side of the chassis (16), an output end of the motor (1) being connected to a gear shaft of a driving wheel via a coupling (2), a gear plate of the driving wheel being mounted in a transmission housing (4), driven wheels meshing with the driving wheel being evenly mounted in the transmission housing (4), and a gear shaft of the driven wheel being connected to a driving wheel seat (6); The outer periphery of the transmission housing (4) is sleeved with a bearing mounting sleeve (5) mounted in the chassis (16) via a support plate (7); a horizontal support rod (8) is fixed in the middle of the transmission housing (4); the other end of the horizontal support rod (8) is mounted on a bracket (9) via a bearing; the bottom of the bracket (9) is fixed on the chassis (16); a fixing plate (10) is sleeved and fixed at one end of the horizontal support rod (8) close to the bracket (9); a thimble (11) is installed on the fixing plate (10) facing the driving wheel seat (6); A roller (3) is clamped between the ejector pin (11) and the driving wheel seat (6) and rotates synchronously with the driving wheel seat (6).

2. A strength tester according to claim 1, characterized in that: The fixing plate (10) is provided with an ejector mounting cylinder (12), and a cylinder cover (1201) is clamped on the end surface of the ejector mounting cylinder (12) facing the drum (3). An ejector (11) is inserted into the ejector mounting cylinder (12), and the needle head of the ejector (11) extends out of the cylinder cover (1201), and the tail of the ejector (11) extends out of the ejector mounting cylinder (12) and is screwed with an adjustment handle (13); an annular protrusion (1101) is fixed to the middle of the ejector (11), and a spring is installed between the annular protrusion (1101) and the inner end surface of the ejector mounting cylinder (12).

3. A strength tester according to claim 2, characterized in that: A pit is provided in the middle of the end surface of the roller (3) that cooperates with the ejector pin (11).

4. A strength tester according to claim 1, characterized in that: The bottom of the support plate (7) is fixed to the bottom surface of the chassis (16), and the upper part of the support plate (7) is provided with a mounting hole for mounting a plunger (14), wherein the mounting hole is provided with a plunger (14) which is clamped on the outer periphery of the bearing mounting sleeve (5).

5. A strength tester according to claim 1, characterized in that: One end of the gear shaft of the driven wheel is rotatably mounted in the transmission housing (4) via a shaft nut (15), and the other end of the gear shaft of the driven wheel extends out of the transmission housing (4) to connect to the driving wheel seat (6).

6. A strength tester according to claim 1, characterized in that: The gear shaft of the driving wheel and the gear shaft of the driven wheel extend out of the transmission housing (4) in opposite directions.

7. A strength tester according to claim 1, characterized in that: A chassis partition (17) is provided in the chassis (16); the motor (1) is mounted on one side of the chassis partition (17); the coupling (2) passes through the chassis partition (17) and is connected to a driving wheel mounted on the other side of the chassis partition (17); and a flip door (18) is installed on the side of the chassis (16) where the transmission housing (4) is installed.

8. A strength tester according to claim 1, characterized in that: A sensor is installed on the output end of the motor (1).

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