High-safety manual static pressure device

Abstract

The utility model discloses a manual static pressure device with high safety, which belongs to the technical field of test instruments and comprises a middle shaft positioned in the middle of a support rod and a lifting handle hinged on a fixed rod and rotating along a rotating shaft, a groove capable of being hooked on the middle shaft is arranged at the front end of the lifting handle, and the rear end of the lifting handle is a handheld end. A middle shaft groove is formed in the middle shaft, a rotating piece capable of rotating is hinged to the outer end of the lifting handle, the end of the rotating piece protrudes towards one side to form a rotating piece protrusion capable of being clamped in the middle shaft groove after rotating, and the length of the middle shaft groove is larger than the width of the rotating piece protrusion; the middle shaft groove is formed in the middle shaft, the rotating piece with the rotating piece protrusion is hinged to the outer end of the lifting handle, and the rotating piece protrusion is matched with the middle shaft groove, so that axial movement of the lifting handle is prevented, the accident that the middle shaft falls off is prevented, and it is guaranteed that sample preparation work is conducted smoothly.

Description

Technical Field

[0001] This utility model belongs to the field of testing instrument technology, specifically relating to a highly safe manual static pressure device. Background Technology

[0002] The caking index tester is a specialized instrument for determining the caking ability (caking index) of coking coal. A manual static pressure device, as an accessory to the caking index tester, is used for sample preparation in laboratory analysis. Its structure is as follows: Figure 1 As shown, the device includes a base 7 and a fixing rod 9 fixed on the base 7. A rotating shaft 8 is fixedly installed in the middle of the fixing rod 9. The rotating shaft 8 is located in the cavity in the middle of the lifting handle 5. A groove is provided at the front end of the lifting handle 5. The central shaft 1 fixedly installed in the middle of the support rod 11 is located in the groove. A weight 10 is fixedly installed on the top of the support rod 11. An upper fixing plate 12 and a lower fixing plate 13 are also fixedly sleeved at the same height of the fixing rod 9 and the support rod 11. When in use, the operator presses down on the lifting handle 5. The lifting handle 5 lifts the support rod 11 and the weight 10 around the rotating shaft 8. The test sample is placed under the support rod 11. Then the lifting handle 5 is released, and the weight 10 applies a certain pressure to the test sample, thus completing the sample preparation.

[0003] However, in actual use, due to the certain gap between the inner wall of the lifting handle 5 and the fixed rod 9 and support rod 11, the lifting handle 5 is prone to axial displacement to one side along the rotating shaft 8 during the lifting process. In mild cases, this can cause the central shaft 1 on one side to fall out of the groove, resulting in the tilting of the weight 10 and support rod 11. When performing static pressure operation on the sample, the pressure on different parts of the sample will be uneven, and the test results will be deviated. In severe cases, the weight 10 and support rod 11 may fall off, causing the coal sample to splash out, the crucible to be damaged, or even the test personnel to be injured. Utility Model Content

[0004] The purpose of this invention is to provide a highly safe manual hydrostatic pump. By setting a groove on the central shaft and hinged a rotating plate with a rotating plate protrusion to the outer end of the lifting handle, the rotating plate protrusion cooperates with the groove on the central shaft to prevent the axial movement of the lifting handle, prevent the central shaft from falling off, and ensure the smooth progress of sample preparation.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A highly safe manual hydrostatic pump includes a central shaft located in the middle of a support rod and a lifting handle hinged to a fixed rod and rotating along a rotation axis. The front end of the lifting handle is provided with a groove that can hook onto the central shaft, and the rear end is a hand grip end. The central shaft is provided with a central shaft groove. The outer end of the lifting handle is hinged with a rotatable rotating plate, and the end of the rotating plate protrudes to one side to form a rotating plate protrusion that can be locked in the central shaft groove after rotation. The length of the central shaft groove is greater than the width of the rotating plate protrusion.

[0007] A further improvement of the present invention is that the rotating plate is a thin sheet structure with a certain length, and the protrusion of the rotating plate is a square or semi-circular thin sheet.

[0008] A further improvement of this utility model is that: a cylindrical fixed shaft is fixed to the outer end of the lifting handle, and the rotating plate is hinged to the fixed shaft through a circular rotating hole at the end.

[0009] A further improvement of the present invention is that: at least one fixed shaft groove is provided at the end of the fixed shaft along the circumferential direction, and a baffle plate that can be inserted and removed to prevent the rotating piece from falling out is inserted into the fixed shaft groove.

[0010] A further improvement of this utility model is that the end of the fixed shaft extends circumferentially to form a circular or lace-shaped retaining ring to prevent the rotating piece from falling off.

[0011] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows:

[0012] This invention features a central shaft groove on the surface of the central shaft and a rotatable rotating plate hinged to the outer end of the lifting handle. The end of the rotating plate protrudes to one side to form a rotating plate protrusion. The rotating plate protrusion can be locked in the central shaft groove as the rotating plate rotates, thus preventing axial displacement of the lifting handle along the rotation axis during the lifting process and ensuring the smooth progress of the sample preparation process.

[0013] The rotating plate of this utility model is a thin plate structure with a certain length. The protrusion of the rotating plate is a semi-circular thin plate. When the rotating plate rotates, the protrusion of the rotating plate can better enter the groove of the central shaft.

[0014] The outer end of the lifting handle of this utility model is fixed with a circular fixed shaft, and the rotating plate is hinged to the fixed shaft through a circular rotating hole at the end. The overall structure is simple and occupies little space.

[0015] The end of the fixed shaft of this utility model has at least one fixed shaft groove arranged in the circumferential direction, and a baffle that can be inserted and removed to prevent the rotating plate from falling out is inserted into the fixed shaft groove. When performing sample preparation operation, the rotating plate is put on the fixed shaft and the baffle is inserted into the fixed shaft groove. After the sample preparation operation is completed, the baffle is pulled out and the rotating plate is removed. It is convenient and quick to use.

[0016] The end of the fixed shaft of this utility model extends circumferentially to form a lace-shaped retaining ring to prevent the rotating piece from falling off. The overall structure is beautiful and saves materials. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the original manual static pressure device;

[0018] Figure 2 This is a planar schematic diagram of the rotating plate of this utility model;

[0019] Figure 3 This is a schematic diagram of the working mechanism of the rotating plate and the central shaft of this utility model;

[0020] Among them, 1. central shaft; 2. central shaft groove; 3. rotating plate; 4. rotating plate protrusion; 5. lifting handle; 6. fixed shaft; 7. base; 8. rotating shaft; 9. fixed rod; 10. weight; 11. support rod; 12. upper fixed plate; 13. lower fixed plate. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to embodiments:

[0022] Original manual static pressure device, such as Figure 1 As shown, the device includes a central shaft 1, a lifting handle 5, a base 7, a rotating shaft 8, a fixed rod 9, a weight 10, a support rod 11, an upper fixed plate 12, and a lower fixed plate 13. The fixed rod 9 is fixed to the base 7. The rotating shaft 8 is fixedly installed in the middle of the fixed rod 9. The rotating shaft 8 is located in the cavity in the middle of the lifting handle 5. The front end of the lifting handle 5 is provided with a groove. The central shaft 1, which is fixedly installed in the middle of the support rod 11, is located in the groove. The weight 10 is fixedly installed on the top of the support rod 11. The upper fixed plate 12 and the lower fixed plate 13 are also fixedly sleeved at the same height as the fixed rod 9 and the support rod 11. When in use, the operator presses down on the lifting handle 5. The lifting handle 5, with the rotating shaft 8 as the axis, lifts the support rod 11 and the weight 10. The test sample is placed under the support rod 11. Then, the lifting handle 5 is released, and the weight 10 applies a certain pressure to the test sample, thus completing the sample preparation.

[0023] However, in actual use, due to the certain gap between the inner wall of the lifting handle 5 and the fixed rod 9 and support rod 11, the lifting handle 5 is prone to axial displacement to one side along the rotating shaft 8 during the lifting process. In mild cases, this can cause the central shaft 1 on one side to fall out of the groove, resulting in the tilting of the weight 10 and support rod 11. When performing static pressure operation on the sample, the pressure on each part of the sample will be uneven, and the test results will be deviated. In severe cases, the weight 10 and support rod 11 may fall, causing the coal sample to splash out, the crucible to be damaged, or even the test personnel to be injured.

[0024] The central shaft 1 of this utility model has a central shaft groove 2 on its surface. The outer end of the lifting handle 5 is hinged with a rotating plate 3. The end of the rotating plate 3 protrudes to one side to form a rotating plate protrusion 4. The length of the central shaft groove 2 along the circumference of the central shaft 1 is greater than the width of the rotating plate protrusion 4 along the axial direction of the rotating plate 3. The rotating plate protrusion 4 can be locked in the central shaft groove 2 as the rotating plate 3 rotates, which avoids the lifting handle 5 from axially displacing to one side along the rotating shaft 8 during the lifting process, and ensures the smooth progress of the sample preparation process.

[0025] In a preferred embodiment of this utility model, the rotating plate 3 is a thin plate structure with a certain length, and the rotating plate protrusion 4 is a semi-circular thin plate. When the rotating plate 3 rotates, the rotating plate protrusion 4 can better enter the central shaft groove 2.

[0026] In a preferred embodiment of this utility model, a circular fixed shaft 6 is fixed to the outer end of the lifting handle 5, and the rotating plate 3 is hinged to the fixed shaft 6 through a circular rotating hole at the end. The overall structure is simple and occupies little space.

[0027] In a preferred embodiment of this utility model, at least one fixed shaft groove is provided at the end of the fixed shaft 6 along the circumferential direction, and a baffle plate that can be inserted and removed to prevent the rotating piece 3 from falling off is inserted into the fixed shaft groove. When performing sample preparation, the rotating piece is put on the fixed shaft 6 and the baffle plate is inserted into the fixed shaft groove. After the sample preparation is completed, the baffle plate is pulled out and the rotating piece is removed. It is convenient and quick to use.

[0028] In a preferred embodiment of this utility model, the end of the fixed shaft 6 extends circumferentially to form a lace-shaped retaining ring to prevent the rotating piece 3 from falling off. The overall structure is aesthetically pleasing and saves materials.

[0029] Instructions for use: When using this utility model, the rotating plate is fitted onto the fixed shaft 6, and a baffle is inserted into the groove of the fixed shaft. The rotating plate protrusion 4 can be locked in the central shaft groove 2 as the rotating plate 3 rotates, which prevents the lifting handle 5 from axially displacing to one side along the rotating shaft 8 during the lifting process, ensuring the smooth progress of the sample preparation process. After the sample preparation operation is completed, the baffle is pulled out and the rotating plate 3 is removed. It is convenient and quick to use.

[0030] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A high-safety manual hydrostatic press, comprising a central shaft (1) located in the middle of a supporting rod (11) and a lifting handle (5) hinged to a fixed rod (9) and rotating along a rotating shaft (8), the front end of the lifting handle (5) being provided with a groove capable of being hooked on the central shaft (1) and the rear end being a hand holding end, characterized in that: The middle shaft (1) is provided with a middle shaft groove (2), the outer end of the lifting handle (5) is hinged with a rotatable rotating piece (3), the end of the rotating piece (3) protrudes to one side to form a rotating piece protrusion (4) capable of being clamped in the middle shaft groove (2), and the length of the middle shaft groove (2) is greater than the width of the rotating piece protrusion (4).

2. The high safety hand hydrostatic tester according to claim 1, wherein: The rotating piece (3) is a sheet structure with a certain length, and the rotating piece protrusion (4) is a square or semicircular sheet.

3. The high safety hand hydrostatic tester according to claim 1, wherein: The outer end of the lifting handle (5) is fixed with a cylindrical fixed shaft (6), and the rotating piece (3) is hinged to the fixed shaft (6) through a circular rotating hole arranged at the end.

4. The high safety hand hydrostatic tester according to claim 3, wherein: The end of the fixed shaft (6) is provided with at least one fixed shaft groove arranged in the circumferential direction, and a blocking piece capable of being inserted and pulled out is inserted into the fixed shaft groove to prevent the rotating piece (3) from falling.

5. The high safety hand hydrostatic tester according to claim 3, wherein: The end of the fixed shaft (6) extends in the circumferential direction to form a circular blocking ring or a lace-shaped blocking ring to prevent the rotating piece (3) from falling.

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