A high-temperature constant-force spring type loading device

Abstract

The present invention relates to a high-temperature constant-force spring type loading device, belonging to the field of high-temperature constant-force loading. It includes an outer bracket, a clamping mechanism and a loading mechanism. The clamping mechanism and the loading mechanism are vertically distributed up and down and are both placed inside the outer bracket. The clamping mechanism includes an upper pressing (pulling) rod, a lower pressing (pulling) rod and a heat treatment furnace. The loading mechanism includes an upper support plate, a movable support plate, a lower support plate, a constant-force spring and a pillar. The present invention can carry out long-time heat treatment processes under the condition of a constant force field (tension or compression), with stable performance and low cost.

Description

Technical Field

[0001] The present invention relates to a high-temperature constant-force spring type loading device, belonging to the field of high-temperature constant-force loading. Background Art

[0002] In the heat treatment processes of some industrial engineering practices and scientific research experiments, it is necessary to perform long-term heat treatment under a constant force field (tension or compression), that is, the constant-force aging process. At present, the main solutions for this process are to directly hang heavy objects or use large-scale stretching machines. When using a stretching machine for loading, a high-temperature furnace and high-temperature tensile (compressive) fixtures matching the stretching machine also need to be customized. Moreover, stretching machines and the supporting high-temperature furnaces and fixtures on the market are usually expensive, adding cumbersome procedures and inconveniences to the process.

[0003] At the same time, directly using a stretching machine for the constant-force aging process will cause great waste of resources and also result in high production and experimental costs; while the method of directly hanging heavy objects has risks such as the heavy object falling, thus increasing the safety hazards of operators, and it is impossible to conveniently adjust the constant force according to the actual situation, having significant limitations in dealing with various working conditions. Therefore, it is necessary to develop a simple high-temperature constant-force loading device with constant-force loading characteristics that cooperates with an ordinary heat treatment furnace. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a high-temperature constant-force spring type loading device, and the high-temperature use range of the device is 100 - 1000 °C. The device mainly includes an outer bracket, a clamping mechanism, and a loading mechanism. The clamping mechanism and the loading mechanism are vertically distributed up and down and are both placed inside the outer bracket;

[0005] The clamping mechanism includes an upper pressure (tension) rod, a lower pressure (tension) rod, and a heat treatment furnace. The same fixtures are provided at the bottom of the upper pressure (tension) rod and the top of the lower pressure (tension) rod. The fixture and the specimen are located inside the furnace chamber of the heat treatment furnace. Through holes are opened at the top and bottom of the heat treatment furnace. The top of the upper pressure (tension) rod extends out of the heat treatment furnace and is fixedly connected to the outer bracket, and the bottom of the lower pressure (tension) rod extends out of the heat treatment furnace and is connected to the loading mechanism;

[0006] The loading mechanism includes an upper support plate, a movable support plate, a lower support plate, a constant-force spring, and a pillar. The upper support plate and the lower support plate are fixedly connected by the pillar. The movable support plate is inserted through the pillar and is placed between the upper support plate and the lower support plate. A plurality of constant-force springs are fixed to the upper support plate or the lower support plate through an axial through hole. The head of each spring is connected to the movable support plate. The bottom of the lower pressure (tension) rod passes through the upper support plate and is fixedly connected to the movable support plate. The bottom of the lower support plate is fixed on the ground and is flush with the bottom of the outer bracket.

[0007] In one embodiment of the present invention, the upper pressing (pulling) rod is fixed to the top of the outer bracket by a fixing plate, and the clamps are fixed to the clamps at the bottom of the upper pressing (pulling) rod and the clamps at the top of the lower pressing (pulling) rod by pins and fastening nuts respectively.

[0008] In one embodiment of the present invention, a plurality of upper spring axis supports are provided on the bottom surface of the upper support plate, and a plurality of lower spring axis supports are provided on the top surface of the lower support plate. Both the upper spring axis support and the lower spring axis support can fix the axis through holes of the constant force springs; each of the constant force springs is provided with a spring shaft sleeve, a spring axis limiting hole and a plurality of spring piece head limiting holes; a plurality of spring piece head fixing supports are provided on both the top surface and the bottom surface of the movable support plate, and the spring piece head fixing supports are connected to the spring piece heads; each of the upper spring axis supports and each of the lower spring axis supports is provided with a spring axis fixing hole matching the spring axis limiting hole, and each of the spring piece head fixing supports is provided with a plurality of spring piece head fixing holes matching the spring piece head limiting holes.

[0009] In one embodiment of the present invention, the connection between the axis through hole of the constant force spring and the upper spring axis support, the connection between the axis through hole of the constant force spring and the lower spring axis support, and the connection between the spring piece head limiting hole and the spring piece head fixing hole are all fixed by bolts and nuts.

[0010] In one embodiment of the present invention, there are four struts.

[0011] In the present invention, the direction towards the ground is regarded as "down", and the direction away from the ground is regarded as "up".

[0012] In the present invention, the "up" and "down" included in the names of each component only represent the fixed positional relationship and have no other meaning, and cannot represent their movement tendency.

[0013] In the present invention, the pressing (pulling) rod is a long rod for transmitting the acting force to the clamp; the support plate is a thin plate for carrying each support; the spring piece head fixing support is a small metal support for the spring piece head; the spring axis support is a small metal support for fixing the axis part of the constant force spring.

[0014] Advantages of the present invention:

[0015] 1. The present invention can simultaneously complete constant force loading while controlling at a constant high temperature.

[0016] 2. The loading mechanism of the present invention includes an upper support plate, a movable support plate, a lower support plate and struts. By changing the installation position of the constant force spring, both tensile loading and compressive loading can be completed.

[0017] 3. The present invention is provided with multiple constant force springs for stretching, which can achieve different constant force loading and cope with various working conditions.

[0018] 4. The fixtures at the bottom of the upper pressure (tension) rod and the fixtures at the top of the lower pressure (tension) rod of the present invention are both fixed by pins and fastening nuts, which can not only be flexibly adjusted according to the size of the sample, but also ensure the stability of the fixtures.

[0019] 5. Each constant force spring of the present invention is fixed by an axis support and a spring sheet head fixing support, ensuring the stability of the constant force spring and avoiding uneven pressure.

[0020] 6. The present invention is easy to install, has a low cost, and saves space resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the loading mechanism in an embodiment of the present invention.

[0023] Figure 3 It is a schematic diagram of the structure of the constant force spring in an embodiment of the present invention.

[0024] Figure 4 It is a schematic diagram of the structure of the upper support plate in an embodiment of the present invention.

[0025] Figure 5 It is a schematic diagram of the structure in which the lower pressure (tension) rod penetrates through the movable support plate in an embodiment of the present invention.

[0026] Figure 6 It is a schematic diagram of the structure in which the pillar is connected to the lower support plate in an embodiment of the present invention.

[0027] In the figure, 1 is the lower support plate; 101 is the lower spring shaft support; 102 is the support column; 103 is the lower support plate fixing hole; 104 is the lower spring shaft fixing hole; 2 is the movable support plate; 201 is the upper spring plate head fixing support; 202 is the support column through hole; 203 is the lower spring plate head fixing support; 204 is the spring plate head fixing hole; 3 is the upper support plate; 301 is the upper spring shaft support; 302 is the support column fixing hole; 303 is the upper spring shaft fixing hole; 304 is the lower pressure (tension) rod through hole; 4 is the pin; 5 is the clamp pressure (clamp) head; 6 is the clamp pressure (clamp) head fastening nut; 7 is the upper pressure (tension) rod fixing plate; 8 is the upper pressure (tension) rod; 9 is the outer support; 10 is the heat treatment furnace; 11 is the constant force spring; 1101 is the spring bushing; 1102 is the shaft center through hole; 1103 is the spring plate head limit hole; 12 is the lower pressure (tension) rod; A is the upper support plate fixing nut; B is the spring shaft center fixing bolt and nut; C is the spring plate head fixing bolt and nut. Detailed implementation mode

[0028] Embodiment 1

[0029] As Figure 1 shown, the present invention provides a high-temperature constant force spring type loading device, including an outer support 9, a clamping mechanism and a loading mechanism. The clamping mechanism and the loading mechanism are vertically distributed up and down and are both arranged inside the outer support 9.

[0030] The outer support 9 is an "n-shaped" support, which can completely cover the clamping mechanism and the loading mechanism and can be fixed on the ground.

[0031] The clamping mechanism includes an upper pressure (tension) rod 8, a lower pressure (tension) rod 12 and a heat treatment furnace 10. The upper pressure (tension) rod 8 and the lower pressure (tension) rod 12 are both provided with clamps of the same structure. The clamp includes a clamp pressure (clamp) head 5, which is fixed to the bottom of the upper pressure (tension) rod 8 and the top of the lower pressure (tension) rod 12 by a pin 4 and a clamp pressure (clamp) head fastening nut 6.

[0032] The top of the upper pressure (tension) rod 8 extends out of the heat treatment furnace 10 and is fixedly connected to the outer support 9 by an upper pressure (tension) rod fixing plate 7.

[0033] As Figure 2 , Figure 4 , Figure 5 , Figure 6 shown, the loading mechanism includes an upper support plate 3, a movable support plate 2, a lower support plate 1, a constant force spring 11 and a support column 102. Four support columns 102 are fixed at the four corners of the lower support plate 1 and pass through the four support column through holes 202 of the movable support plate 2 and are fixed to the support column fixing holes 302 of the upper support plate 3 by an upper support plate fixing nut A.

[0034] On the top and bottom surfaces of the movable support plate 2, there are respectively provided upper spring plate head fixed supports 201 and lower spring plate head fixed supports 203, and there are multiple of each. Each spring plate head fixed support is provided with multiple spring plate head fixing holes 204.

[0035] The bottom of the pressing (pulling) rod 12 extends out of the heat treatment furnace 10, passes through the pressing (pulling) rod through hole 304 of the upper support plate 3, and is connected to the center of the movable support plate 2 of the loading mechanism.

[0036] As Figure 2 , Figure 3 As shown, multiple constant force springs 11 are fixed to the upper spring axis fixing holes 303 of the upper spring axis support 301 on the upper support plate 3 or the lower spring axis fixing holes 104 of the lower spring axis support 101 on the lower support plate 1 through the axis through holes 1102 by spring axis fixing bolts and nuts B.

[0037] The spring plate head limiting holes 1103 of each constant force spring 11 are connected to the spring plate head fixing holes 204 of the upper spring plate head fixed support 201 and the lower spring plate head fixed support 203 of the movable support plate 2 by spring plate head fixing bolts and nuts C.

[0038] The lower support plate fixing hole 103 is fixed by a fastener so that the lower support plate 1 is fixed to the ground and is flush with the bottom of the outer support 9.

[0039] Embodiment 2

[0040] When performing the constant force compression of the sample, the steps are as follows:

[0041] Step 1: Select an appropriate number of constant force springs 11 according to the load requirement, and fix the axis through holes 1102 and the spring plate head limiting holes 1103 to the upper spring axis fixing holes 303 and the spring plate head fixing holes 204 of the upper spring plate head fixed support 201 respectively.

[0042] Step 2: Place a jack or other hydraulic tool between the upper support plate 3 and the movable support plate 2 and apply pressure to load to a suitable position.

[0043] Step 3: Adjust the fixture pressing (clamping) head 5, the fixture pressing (clamping) head fastening nut 6 and the pin 4, fix the sample between the fixture pressing (clamping) heads 5 of the upper pressing (pulling) rod 8 and the lower pressing (pulling) rod 12, and then start the heat treatment furnace 10 to work.

[0044] Step 4: Remove the jack or other hydraulic tool, the constant force spring 11 contracts and the upper support plate 3 remains fixed, generating an upward acting force, causing the fixture to compress the sample.

[0045] Embodiment 3

[0046] When performing constant-force stretching of a sample, the steps are as follows:

[0047] Step 1: Select an appropriate number of constant-force springs 11 according to the load requirement, and fix the axial center through hole 1102 and the spring strip head limiting hole 1103 to the lower spring axial center fixing hole 104 and the spring strip head fixing hole 204 of the lower spring strip head fixing support 203 respectively.

[0048] Step 2: Place a jack or other hydraulic tool between the lower support plate 1 and the movable support plate 2 and apply pressure to load it to an appropriate position.

[0049] Step 3: Adjust the clamp (grip) head 5, the clamp (grip) head fastening nut 6 and the pin 4 to fix the sample between the clamp heads 5 of the upper pressing (pulling) rod 8 and the lower pressing (pulling) rod 12, and then start the heat treatment furnace 10 to work.

[0050] Step 4: Remove the jack or other hydraulic tool. The constant-force spring 11 contracts and the lower support plate 1 remains stationary, generating a downward acting force, causing the clamp to stretch the sample.

[0051] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this technology can make various modifications and decorations without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the claims.

Claims

1. A high-temperature constant-force spring type loading device, characterized in that, It includes an outer support, a clamping mechanism and a loading mechanism. The clamping mechanism and the loading mechanism are vertically distributed up and down and are both placed inside the outer support. The clamping mechanism includes an upper pressure pull rod, a lower pressure pull rod and a heat treatment furnace. The same fixtures are provided at the bottom of the upper pressure pull rod and the top of the lower pressure pull rod. The fixture and the specimen are located inside the furnace chamber of the heat treatment furnace. Through holes are opened at the top and bottom of the heat treatment furnace. The top of the upper pressure pull rod extends out of the heat treatment furnace and is fixedly connected to the outer support. The bottom of the lower pressure pull rod extends out of the heat treatment furnace and is connected to the loading mechanism. The loading mechanism includes an upper support plate, a movable support plate, a lower support plate, a constant force spring and a pillar. The upper support plate and the lower support plate are fixedly connected by the pillar. The movable support plate is inserted through the pillar and is placed between the upper support plate and the lower support plate. A plurality of constant force springs are installed on the upper support plate or the lower support plate through the central through holes. The head of each spring piece is connected to the movable support plate. The bottom of the lower pressure pull rod passes through the upper support plate and is fixedly connected to the movable support plate. The bottom of the lower support plate is fixed on the ground and is flush with the bottom of the outer support. A plurality of upper spring central supports are provided on the bottom surface of the upper support plate, and a plurality of lower spring central supports are provided on the top surface of the lower support plate. Each of the constant force springs is provided with a spring shaft sleeve, a spring central limit hole and a plurality of spring piece head limit holes. A plurality of spring piece head fixing supports are provided on both the top surface and the bottom surface of the movable support plate. The spring piece head fixing support is connected to the spring piece head part. Each of the upper spring central supports and each of the lower spring central supports are provided with spring central fixing holes matching the spring central limit holes. Each of the spring piece head fixing supports is provided with a plurality of spring piece head fixing holes matching the limit holes.

2. The high-temperature constant-force spring type loading device according to claim 1, characterized in that, The upper pressure pull rod is fixed to the top of the outer support by a fixing plate.

3. The high-temperature constant-force spring type loading device according to claim 1, characterized in that The fixtures are fixed to the fixture at the bottom of the upper pressure pull rod and the fixture at the top of the lower pressure pull rod by pins and fastening nuts.

4. A high-temperature constant-force spring type loading device according to claim 1, characterized in that, The central through hole of the constant force spring and the upper spring central support, the central through hole of the constant force spring and the lower spring central support, and between the spring piece head limit hole and the fixing hole are fixedly connected by bolts and nuts.

5. A high-temperature constant-force spring type loading device according to claim 1, characterized in that, There are four pillars.

6. Application of a high-temperature constant force spring type loading device as described in claim 1 during high-temperature constant force loading.

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