Conveyor belt vulcanization joint test clamping device

Abstract

The utility model belongs to the technical field of conveyer belt vulcanization joint detection, and particularly relates to a conveyer belt vulcanization joint test clamping device. Comprising a clamp body, clamping plates and a horizontal pushing oil cylinder. The clamp body is provided with two clamping plate slots which are arranged in opposite directions, the two clamping plates are respectively inserted into the two clamping plate slots, and a gap between the clamping surfaces of the two clamping plates forms a conveying belt sample slot; the two clamping plates comprise a driven clamping plate and an active clamping plate; the horizontal pushing oil cylinder is installed on the clamp body and located on one side of the driving clamping plate, the loading direction of the horizontal pushing oil cylinder is perpendicular to the clamping face of the clamping plate, and a cylinder rod of the horizontal pushing oil cylinder penetrates through a through hole in the clamp body to be connected with the driving clamping plate. According to the conveyor belt vulcanization joint clamping device, clamping force is applied through the horizontal pushing oil cylinder, the problem that jaw stress of a wedge-shaped clamp is too large is solved to a great extent, the clamping force on a conveyor belt sample is more uniform, and the surface of the conveyor belt sample cannot be damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of conveyor belt vulcanized joint detection, and particularly relates to a test clamping device for conveyor belt vulcanized joints. Background Art

[0002] During the tensile test of the conveyor belt vulcanized joint, the fixture of the tensile testing machine must have a strong clamping force to ensure that there is no slipping phenomenon during the tensile test. According to relevant requirements, the strength of the conveyor belt vulcanized joint needs to be not less than 90% of the rated tensile strength of the conveyor belt. Depending on the different rated tensile strengths of the conveyor belt, the measurement ranges vary greatly. In the traditional wedge-shaped clamping part, due to the stress concentration phenomenon at the jaw position, the conveyor belt cover layer comes off, making the normal test impossible. Content of the Utility Model

[0003] The utility model aims to solve the problem that the fixture of the current tensile testing machine causes the conveyor belt cover layer to come off due to uneven clamping force.

[0004] The utility model provides the following technical solution: A test clamping device for conveyor belt vulcanized joints, including a fixture body, clamping plates, and a flat push oil cylinder; two reversely arranged clamping plate slots are provided on the fixture body, and the two clamping plates are respectively inserted into the two clamping plate slots. The clamping surfaces of the two clamping plates are parallel, and the gap between the clamping surfaces of the two clamping plates forms a conveyor belt sample slot; the two clamping plates include a passive clamping plate and an active clamping plate; the flat push oil cylinder is installed on the fixture body, the flat push oil cylinder is located on one side of the active clamping plate, the loading direction of the flat push oil cylinder is perpendicular to the clamping surface of the clamping plate, and the piston rod of the flat push oil cylinder passes through the through hole on the fixture body and is connected to the active clamping plate; an assembly structure for connecting with a tensile testing machine is provided on the fixture body.

[0005] Further, a cavity with an open top and a closed bottom is provided on the fixture body. The cavity includes a first rectangular chamber in the middle and second rectangular chambers arranged in the middle of the two long sides of the first rectangular chamber. One short side of the first rectangular chamber penetrates the fixture body; a conveyor belt sample slot is reserved in the middle of the first rectangular chamber; the two second rectangular chambers on both sides and the parts on both sides of the conveyor belt sample slot in the first rectangular chamber serve as clamping plate slots.

[0006] Further, both the passive clamping plate and the active clamping plate include an insertion plate and a clamping plate. The insertion plate is inserted into the second rectangular chamber on the fixture body, and the clamping plate is located in the first rectangular chamber on the fixture body; a vertical connection groove is centrally opened on the insertion plate of the active clamping plate, and the cross-section of the connection groove is wide inside and has a narrow opening on the side facing the flat push oil cylinder; the connection head at the end of the piston rod of the flat push oil cylinder fits with the connection groove.

[0007] Further, anti-slip patterns are engraved on the clamping surfaces of the passive clamping plate and the active clamping plate.

[0008] Furthermore, connection blocks are provided on both sides of the outside of the fixture body at the conveyor belt sample slots, and connection through holes parallel to the conveyor belt sample slots are formed in the connection blocks; the flat push oil cylinder is installed on the fixture body by screws;

[0009] An installation block is provided on the sliding trolley of the tensile testing machine, and a horizontal jack corresponding to the connection through hole is formed in the installation block. The fixture body is connected to the installation block through a pin shaft passing through the connection through hole, and one end of the pin shaft abuts against the connection block and the other end is fixedly connected to the installation block.

[0010] Furthermore, radial holes are formed in the part of the pin shaft inserted into the installation block, vertical jacks communicating with the radial holes from top to bottom are formed in the installation block, and pins are inserted into the vertical jacks, and the pins are inserted into the radial holes of the pin shaft.

[0011] Furthermore, the anti-slip patterns on the clamping surfaces of the passive clamping plate and the active clamping plate are tower-shaped teeth. The tooth length of the tower-shaped teeth is 13 mm, the pitch is 12 mm, and the included angle is 80°.

[0012] Furthermore, concave rounded corners are provided at the internal corners of the first rectangular chamber and the second rectangular chamber on the fixture body.

[0013] Compared with the prior art, the advantages of the present utility model are as follows:

[0014] 1. The conveyor belt vulcanization joint clamping device has a compact and simple structure. The design of not opening the bottom of the fixture body greatly reduces the labor intensity when clamping the conveyor belt sample and keeps the placement of the conveyor belt sample centered.

[0015] 2. The conveyor belt vulcanization joint clamping device applies the clamping force through the flat push oil cylinder, which greatly solves the problem of excessive jaw stress existing in the wedge-shaped fixture, makes the clamping force on the conveyor belt sample more uniform, and does not damage the surface of the conveyor belt sample.

[0016] 3. The clamping surface of the clamping plate of the conveyor belt vulcanization joint clamping device is engraved with tower-shaped teeth at a large angle, which protects the surface of the conveyor belt sample while providing the clamping force. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic structural diagram of the fixture body;

[0019] Figure 3 is a schematic structural diagram of the active clamping plate;

[0020] Figure 4 is a combined top view of the fixture body and the sliding trolley;

[0021] Figure 5 It is a side view of the combination of the fixture body and the sliding trolley.

[0022] In the figure: 1-fixture body; 1.1-clamping plate slot; 1.2-conveyor belt sample slot; 1.3-through hole; 1.4-inner concave fillet; 2-horizontal push oil cylinder; 3-passive clamping plate; 4-active clamping plate; 4.1-plug-in plate; 4.2-clamping plate; 4.3-connection groove; 4.4-tower-shaped teeth; 5-connection block; 5.1-connection through hole; 6-mounting block; 7-pin shaft; 8-pin; 9-sliding trolley. Specific implementation mode

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] As Figure 1 、 Figure 2 shown: A clamping device for a conveyor belt vulcanization joint test includes a fixture body 1, a clamping plate, and a horizontal push oil cylinder 2; two oppositely arranged clamping plate slots 1.1 are provided on the fixture body 1, and the two clamping plates are respectively inserted into the two clamping plate slots 1.1. The clamping surfaces of the two clamping plates are parallel, and the gap between the clamping surfaces of the two clamping plates forms a conveyor belt sample slot 1.2; the two clamping plates include a passive clamping plate 3 and an active clamping plate 4; the horizontal push oil cylinder 2 is installed on the fixture body 1, the horizontal push oil cylinder 2 is located on one side of the active clamping plate 4, the loading direction of the horizontal push oil cylinder 2 is perpendicular to the clamping surface of the clamping plate, the cylinder rod of the horizontal push oil cylinder 2 passes through the through hole 1.3 on the fixture body 1 and is connected to the active clamping plate 4, the horizontal push oil cylinder 2 applies a horizontal thrust to the active clamping plate 4, and the active clamping plate 4 moves towards the passive clamping plate 3 to clamp the conveyor belt sample; an assembly structure for connecting with a tensile testing machine is provided on the fixture body 1.

[0025] As Figure 2 shown: The fixture body 1 is provided with a cavity with an open top and a closed bottom. The cavity includes a first rectangular chamber in the middle and second rectangular chambers arranged in the middle of the two long sides of the first rectangular chamber. One short side of the first rectangular chamber penetrates through the fixture body 1; a conveyor belt sample slot 1.2 is reserved in the middle of the first rectangular chamber; the two second rectangular chambers on both sides and the parts on both sides of the conveyor belt sample slot 1.2 in the first rectangular chamber serve as the clamping plate slots 1.1.

[0026] At the inner concave corners of the first rectangular chamber and the second rectangular chamber on the fixture body 1, an inner concave fillet 1.4 is provided. On the one hand, it prevents cracks from occurring at the inner concave corners of the fixture body 1 when the tensile force on the conveyor belt sample is transmitted to the fixture body 1 through the clamping plate. On the other hand, it facilitates the insertion of the clamping plate.

[0027] As Figure 3 shown: Both the passive clamping plate 3 and the active clamping plate 4 include a plug-in plate 4.1 and a clamping plate 4.2. The plug-in plate 4.1 is inserted into the second rectangular chamber on the fixture body 1, and the clamping plate 4.2 is located in the first rectangular chamber on the fixture body 1. A vertical connecting groove 4.3 is centrally opened on the plug-in plate 4.1 of the active clamping plate 4. The cross-section of the connecting groove 4.3 is wide inside and has a narrow opening on the side facing the flat push oil cylinder 2. The connecting head at the end of the cylinder rod of the flat push oil cylinder 2 fits into the connecting groove 4.3, and the flat push oil cylinder 2 can apply thrust and tensile force to the active clamping plate 4. When the active clamping plate 4 is inserted into the clamping plate slot 1.1 from top to bottom, the connecting groove 4.3 is synchronously inserted with the connecting head at the end of the cylinder rod of the flat push oil cylinder 2.

[0028] Anti-slip patterns are engraved on the clamping surfaces of the passive clamping plate 3 and the active clamping plate 4. The anti-slip patterns on the clamping surfaces of the passive clamping plate 3 and the active clamping plate 4 are tower-shaped teeth 4.4. The tooth length of the tower-shaped teeth 4.4 is 13 mm, the spacing is 12 mm, and the angle is 80°; while ensuring the clamping force, the surface of the conveyor belt sample will not be damaged.

[0029] As Figure 4 、 Figure 5 shown: On both sides of the conveyor belt sample slot 1.2 outside the fixture body 1, connection blocks 5 are provided. Through holes 5.1 parallel to the conveyor belt sample slot 1.2 are opened on the connection blocks 5. The flat push oil cylinder 2 is installed on the fixture body 1 by screws. An installation block 6 is provided on the sliding trolley of the tensile testing machine. A horizontal jack corresponding to the through hole 5.1 is opened on the installation block 6. The fixture body 1 is connected to the installation block 6 through a pin shaft 7 passing through the through hole 5.1. One end of the pin shaft 7 abuts against the connection block 5, and the other end is fixedly connected to the installation block 6. Before installing the fixture body 1, first remove the flat push oil cylinder 2; after inserting the pin shaft 7, then install the flat push oil cylinder 2 back.

[0030] A radial hole 7.1 is opened in the part of the pin shaft 7 inserted into the installation block 6. A vertical jack communicating with the radial hole 7.1 from top to bottom is opened on the installation block 6. A pin 8 is inserted into the vertical jack 6.2, and the pin 8 is inserted into the radial hole 7.1 of the pin shaft 7. The pin 8 provides horizontal support for the pin shaft 7.

[0031] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A test clamping device for vulcanized joints of conveyor belts, characterized in that: It includes a fixture body (1), clamping plates, and a flat push oil cylinder (2); two reversely arranged clamping plate slots (1.1) are provided on the fixture body (1), the two clamping plates are respectively inserted into the two clamping plate slots (1.1), the clamping surfaces of the two clamping plates are parallel, and the gap between the clamping surfaces of the two clamping plates forms a conveyor belt sample slot (1.2); the two clamping plates include a passive clamping plate (3) and an active clamping plate (4); the flat push oil cylinder (2) is installed on the fixture body (1), the flat push oil cylinder (2) is located on one side of the active clamping plate (4), the loading direction of the flat push oil cylinder (2) is perpendicular to the clamping surface of the clamping plate, and the piston rod of the flat push oil cylinder (2) passes through the through hole (1.3) on the fixture body (1) and is connected to the active clamping plate (4); an assembly structure for connecting with a tensile testing machine is provided on the fixture body (1).

2. The clamping device for testing the vulcanized joint of a conveyor belt according to claim 1, wherein: A cavity with an open top and a closed bottom is provided on the fixture body (1), the cavity includes a first rectangular chamber in the middle and second rectangular chambers arranged in the middle of the two long sides of the first rectangular chamber, and one short side of the first rectangular chamber penetrates the fixture body (1); a conveyor belt sample slot (1.2) is reserved in the middle of the first rectangular chamber; the two second rectangular chambers on both sides and the parts on both sides of the conveyor belt sample slot (1.2) in the first rectangular chamber serve as clamping plate slots (1.1).

3. The clamping device for testing the vulcanized joint of a conveyor belt according to claim 2, characterized in that: Both the passive clamping plate (3) and the active clamping plate (4) include an insertion plate (4.1) and a clamping plate (4.2), the insertion plate (4.1) is inserted into the second rectangular chamber on the fixture body (1), and the clamping plate (4.2) is located in the first rectangular chamber on the fixture body (1); a vertical connection groove (4.3) is centrally opened on the insertion plate (4.1) of the active clamping plate (4), and the cross-section of the connection groove (4.3) is wide inside and has a narrow opening on the side facing the flat push oil cylinder (2). The connection head at the end of the piston rod of the flat push oil cylinder (2) fits with the connection groove (4.3).

4. A clamping device for testing vulcanized joints of a conveyor belt according to any one of claims 1 to 3, characterized in that: Anti-slip patterns are engraved on the clamping surfaces of the passive clamping plate (3) and the active clamping plate (4).

5. The clamping device for testing the vulcanized joint of a conveyor belt according to claim 3, wherein: Connection blocks (5) are provided on both sides of the conveyor belt sample slot (1.2) outside the fixture body (1), and connection through holes (5.1) parallel to the conveyor belt sample slot (1.2) are opened on the connection blocks (5); the flat push oil cylinder (2) is installed on the fixture body (1) by screws. An installation block (6) is provided on the sliding trolley of the tensile testing machine, and a horizontal jack corresponding to the connection through hole (5.1) is opened on the installation block (6), and the fixture body (1) is connected to the installation block (6) through a pin shaft (7) passing through the connection through hole (5.1), and one end of the pin shaft (7) abuts against the connection block (5) and the other end is fixedly connected to the installation block (6).

6. The clamping device for belt vulcanization joint test according to claim 5, characterized in that: A radial hole (7.1) is opened on the part of the pin shaft (7) inserted into the installation block (6), a vertical jack is opened on the installation block (6) and communicates with the radial hole (7.1) from top to bottom, and a pin (8) is inserted into the vertical jack (6.2), and the pin (8) is inserted into the radial hole (7.1) of the pin shaft (7).

7. A clamping device for testing vulcanized joints of a conveyor belt according to claim 4, characterized in that: The anti-slip lines on the clamping surfaces of the passive splint (3) and the active splint (4) are tower-shaped teeth (4.4). The tooth length of the tower-shaped teeth (4.4) is 13 mm, the spacing is 12 mm, and the included angle is 80°.

8. The clamping device for the conveyor belt vulcanization joint test according to claim 2, wherein: Inner concave rounded corners (1.4) are provided at the internal corners of the first rectangular chamber and the second rectangular chamber on the jig body (1).

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