An automatic tensioning device for steam filter winding

Abstract

This utility model relates to the field of steam turbine parts manufacturing technology, and proposes an automatic tensioning device for steam filter winding, including: a frame fixedly installed on a winding machine; the steel strip is manually wound onto the guide wheel and tension wheel, and then the adjusting screw is manually rotated, so that under the action of the linear guide rail, it can stably drive the threaded mounting block on it to descend. At the same time as descending, the mounting block drives the support rod and tension wheel on it to descend synchronously through the adjusting block, thereby changing the length of the steel strip path and compensating for tension fluctuations. Then, the spacing between the two guide wheels is adjusted by the spacing adjustment component, thereby adjusting the direction and angle of the steel strip entering the winding station, thus realizing real-time tension adjustment, reducing manual intervention, and providing high precision and stability. After the initial adjustment, it ensures the uniformity of the steel strip tension, increases the winding speed by more than 20%, reduces the scrap rate by 15%, and reduces the number of operators by one.

Description

Technical Field

[0001] This utility model relates to the field of steam turbine parts manufacturing technology, specifically to an automatic tensioning device for winding steam filter screens. Background Technology

[0002] The steam turbine steam filter winding process mainly involves a steel strip filter winding device. Its core lies in achieving precise winding of the steel strip within the filter frame through a specific device, ensuring the filter structure is stable and not easily deformed.

[0003] In the existing steam turbine filter winding process, the tension of the steel strip usually relies on manual adjustment or mechanical limiting devices, which has the following drawbacks:

[0004] 1. Low precision: Manual operation makes it difficult to control the tension in real time, which can easily lead to uneven tension of the steel belt and affect the quality of the filter screen;

[0005] 2. Low efficiency: Frequent downtime for adjustments is required, extending the production cycle;

[0006] 3. Poor stability: Traditional mechanical structures are susceptible to vibration or wear of the 36 steel belt, resulting in tension fluctuations. Utility Model Content

[0007] This utility model proposes an automatic tensioning device for steam filter winding, which solves the problems of low precision in related technologies: difficulty in real-time tension control by manual operation, which easily leads to uneven tension of steel belt, affecting filter quality; low efficiency: frequent machine stops for adjustment, extending the production cycle; and poor stability: traditional mechanical structures are easily affected by vibration or wear of 36 steel belt, resulting in tension fluctuations.

[0008] The technical solution of this utility model is as follows: An automatic tensioning device for winding steam filter screens, comprising:

[0009] A frame that is fixedly mounted on the winding machine;

[0010] A T-slot formed on the frame;

[0011] Two linear guide rails are symmetrically arranged inside the T-shaped groove, and both linear guide rails are fixedly installed on the frame;

[0012] The mounting block is slidably connected to the two linear guides by a slider;

[0013] Rotate the adjusting screw mounted on the bottom wall of the frame, and the mounting block is threaded onto the adjusting screw;

[0014] An adjusting block that is fixedly installed on one side of the mounting block;

[0015] A spacing adjustment assembly is mounted on the frame;

[0016] Two first screw holes are opened at a 70-degree angle on the spacing adjustment assembly;

[0017] A second screw hole is opened at a 70-degree angle on one side of the adjusting block;

[0018] Three support rods are arranged in an inverted triangle on one side of the frame, and the three support rods are respectively threaded to two first screw holes and one second screw hole;

[0019] It also includes two guide wheels and one tension wheel arranged in an inverted triangle, with bearings installed in the middle of both the guide wheels and the tension wheel. Both the guide wheels and the tension wheel are rotatably mounted on the corresponding support rods via the bearings.

[0020] Preferably, both the guide wheel and the tension wheel are fitted with a rubber anti-slip layer in their trapezoidal grooves.

[0021] Preferably, two scales are symmetrically fixedly installed on one side of the frame, and L-shaped pointers are fixedly installed on both sides of the adjustment block, with the horizontal segment of the L-shaped pointers parallel to the scales.

[0022] Preferably, the spacing adjustment assembly includes a bidirectional lead screw disposed on the inner side of the frame, and both ends of the bidirectional lead screw are rotatably connected to the frame. Two L-shaped posts are threadedly connected to the outer side wall of the bidirectional lead screw, and the two first screw holes are respectively opened on the two L-shaped posts.

[0023] Preferably, the support rod includes a connecting rod, and the connecting rod is threadedly connected to the first screw hole and the second screw hole through a screw at its rear end. A T-shaped fixing sleeve is inserted into the other end of the connecting rod, and the T-shaped fixing sleeve is rotatably connected to the inner side of the connecting rod.

[0024] A first nut is fixedly installed on the inner side wall near the end of the T-shaped fixing sleeve. A connecting screw is inserted into both the T-shaped fixing sleeve and the connecting rod. The connecting screw is threaded into the T-shaped fixing sleeve through the first nut. The guide wheel and the tension wheel are rotatably mounted on the connecting screw through bearings.

[0025] A washer is fitted on the connecting screw, and the washer is located on one side of the guide wheel and the tension wheel. A second nut is threaded onto the outer wall of the connecting screw, and the second nut is located on one side of the washer.

[0026] Preferably, the connecting rod has a slot, one end of the connecting screw is fixedly mounted with a connecting piece, the protruding end of the connecting piece passes through the slot and is fixedly mounted with an arc-shaped rod, and the connecting rod has scale lines.

[0027] Preferably, it also includes a manual operation panel, which is equipped with a tension preset knob and a real-time tension pointer, the tension pointer being connected to a bearing on the tension wheel via a mechanical linkage.

[0028] The working principle and beneficial effects of this utility model are as follows:

[0029] 1. The steel strip is manually wound onto the guide roller and tension roller. Then, the adjusting screw is manually rotated, which, under the action of the linear guide rail, stably drives the threaded mounting block to descend. Simultaneously, the mounting block, through the adjusting block, drives the support rod and tension roller to descend, thereby changing the length of the steel strip path and compensating for tension fluctuations. Then, the spacing between the two guide rollers is adjusted by the spacing adjustment component, thereby adjusting the direction and angle of the steel strip entering the winding station. This allows for real-time tension adjustment, reducing manual intervention and providing high precision and stability. After initial adjustment, the uniformity of the steel strip tension is ensured, the winding speed is increased by more than 20%, the scrap rate is reduced by 15%, and one operator is eliminated.

[0030] 2. The adjustment range of the guide wheel and tension wheel can be quantified by using a scale, L-shaped pointer, bar-shaped opening, connecting piece, arc-shaped rod and scale lines. Attached Figure Description

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0033] Figure 2 A schematic diagram of the structure of the adjusting block is provided for this utility model;

[0034] Figure 3 A schematic diagram of the spacing adjustment component is provided for this utility model;

[0035] Figure 4 A structural schematic diagram of the support rod is provided for this utility model;

[0036] Figure 5 A cross-sectional structural diagram of the connecting rod is provided for this utility model;

[0037] Figure 6 This is a schematic diagram of the rear view structure proposed in this utility model.

[0038] In the diagram: 1. Frame; 2. T-slot; 3. Linear guide rail; 4. Mounting block; 5. Adjusting screw; 6. Adjusting block;

[0039] 7. Spacing adjustment assembly; 71. Two-way lead screw; 72. L-shaped column;

[0040] 8. First screw hole; 9. Second screw hole;

[0041] 10. Support rod; 101. Connecting rod; 102. T-shaped fixing sleeve; 103. First nut; 104. Connecting screw; 105. Washer; 106. Second nut;

[0042] 11. Guide wheel; 12. Tension wheel; 13. Strip-shaped opening; 14. Connecting piece; 15. Arc rod; 16. Scale line; 17. Scale ruler; 18. L-shaped pointer. Detailed Implementation

[0043] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model. Example 1

[0044] Please see Figure 1 - Figure 6 An automatic tensioning device for winding steam filter screens, comprising:

[0045] A frame 1 that is fixedly mounted on the winding machine;

[0046] T-slot 2 is formed on frame 1;

[0047] Two linear guide rails 3 are symmetrically arranged inside the T-shaped groove 2, and both linear guide rails 3 are fixedly installed on the frame 1;

[0048] The mounting block 4 is slidably connected to the two linear guide rails 3 by a slider;

[0049] Rotate the adjusting screw 5, which is mounted on the inner bottom wall of the frame 1, and the mounting block 4 is threaded onto the adjusting screw 5;

[0050] Adjustment block 6 is fixedly installed on one side of mounting block 4;

[0051] The spacing adjustment assembly 7 is mounted on the frame 1;

[0052] Two first screw holes 8 are opened at a 70-degree angle on the spacing adjustment component 7;

[0053] A second screw hole 9 is opened at a 70-degree angle on one side of the adjusting block 6;

[0054] Three support rods 10 are arranged in an inverted triangle on one side of the frame 1, and the three support rods 10 are threadedly connected to two first screw holes 8 and one second screw hole 9 respectively;

[0055] There are two guide wheels 11 and one tension wheel 12 arranged in an inverted triangle. Bearings are installed in the middle of the guide wheels 11 and the tension wheel 12. The guide wheels 11 and the tension wheel 12 are rotatably mounted on the corresponding support rods 10 through the bearings.

[0056] This utility model provides an automatic tensioning device for steam filter winding. In use, the steel strip is manually wound onto the guide wheel 11 and tension wheel 12, eliminating the need for manual pulling during the winding process. The handwheel at the top of the adjusting screw 5 is then manually rotated, causing the adjusting screw 5 to rotate. The rotating adjusting screw 5 drives the threaded mounting block 4, which descends stably under the action of the linear guide rail 3. Simultaneously, the mounting block 4 drives the adjusting block 6, which, through the support rod 10, drives the tension wheel 12 to press the steel strip downwards. This changes the steel strip path length and compensates for tension fluctuations. The spacing adjustment component 7 adjusts the distance between the two guide wheels 11, thereby adjusting the direction and angle of the steel strip entering the winding station. This allows for real-time tension adjustment, reducing manual intervention and providing high precision and stability. After initial adjustment, it ensures uniform steel strip tension, increases winding speed by over 20%, reduces scrap rate by 15%, and reduces the number of operators by one.

[0057] Furthermore, rubber anti-slip layers are installed in the trapezoidal grooves on both the guide wheel 11 and the tension wheel 12.

[0058] Specifically, the rubber anti-slip layer significantly increases the friction between the guide wheel 11, tension wheel 12 and the steel belt, thereby improving the stability and safety of the system, while reducing wear when the steel belt contacts the guide wheel 11 and tension wheel 12.

[0059] Furthermore, the spacing adjustment assembly 7 includes a bidirectional lead screw 71 disposed inside the frame 1, and both ends of the bidirectional lead screw 71 are rotatably connected to the frame 1. Two L-shaped posts 72 are threadedly connected to the outer side wall of the bidirectional lead screw 71, and two first screw holes 8 are respectively opened on the two L-shaped posts 72.

[0060] Specifically, by manually rotating the handwheel at one end of the bidirectional lead screw 71, the bidirectional lead screw 71 on the frame 1 can be rotated. The rotating bidirectional lead screw 71 then drives the two L-shaped columns 72 threaded on it to move closer or further apart, thereby adjusting the direction and angle of the steel strip entering the winding station.

[0061] Furthermore, the support rod 10 includes a connecting rod 101, and the connecting rod 101 is threadedly connected to the first screw hole 8 and the second screw hole 9 through a screw at its rear end. The other end of the connecting rod 101 is inserted into a T-shaped fixing sleeve 102, and the T-shaped fixing sleeve 102 is rotatably connected to the inner side of the connecting rod 101.

[0062] A first nut 103 is fixedly installed on the inner side wall near the end of the T-shaped fixing sleeve 102. A connecting screw 104 is inserted into both the T-shaped fixing sleeve 102 and the connecting rod 101. The connecting screw 104 is threaded into the T-shaped fixing sleeve 102 through the first nut 103. The guide wheel 11 and the tension wheel 12 are rotatably mounted on the connecting screw 104 through bearings.

[0063] A washer 105 is fitted on the connecting screw 104, and the washer 105 is located on one side of the guide wheel 11 and the tension wheel 12. A second nut 106 is threaded on the outer wall of the connecting screw 104, and the second nut 106 is located on one side of the washer 105.

[0064] Specifically, by manually rotating the T-shaped fixing sleeve 102 on the connecting rod 101, the connecting screw 104 can be retracted into the connecting rod 101 under the action of the first nut 103, thereby allowing the support rod 10 to extend and retract, and the parallelism between the guide wheel 11 and the tension wheel 12 can be further adjusted. At the same time, the washer 105 and the second nut 106 can limit and block the guide wheel 11 and the tension wheel 12, preventing them from falling off the connecting screw 104.

[0065] Furthermore, a strip-shaped opening 13 is provided on the connecting rod 101, a connecting piece 14 is fixedly installed at one end of the connecting screw 104, an arc-shaped rod 15 is fixedly installed at the protruding end of the connecting piece 14 through the strip-shaped opening 13, and a scale line 16 is provided on the connecting rod 101.

[0066] Specifically, the connecting plate 14 and the strip opening 13 on the connecting rod 101 can limit the connecting screw 104, so that the connecting screw 104 can only extend and retract under the action of the first nut 103, and will not rotate with the T-shaped fixing sleeve 102. Then, the extension and retraction of the connecting screw 104 can be quantified by the arc rod 15 on the connecting plate 14 and the scale line 16 on the connecting rod 101.

[0067] Furthermore, it also includes a manual operation panel, which is equipped with a tension preset knob and a real-time tension gauge. The tension gauge is connected to the bearing on the tension wheel 12 via a mechanical linkage.

[0068] Specifically, the tension value can be preset using the tension preset knob on the manual operation panel. When the tension pointer detects that the tension of the tension wheel 12 has not reached the preset value, it can be adjusted manually by adjusting the lead screw 5. Example 2

[0069] Based on Embodiment 1, in this embodiment: two scales 17 are symmetrically fixedly installed on one side of the frame 1, and L-shaped pointers 18 are fixedly installed on both sides of the adjustment block 6, with the horizontal segment of the L-shaped pointers 18 parallel to the scales 17.

[0070] The technical solution provided in this embodiment is as follows: when the mounting block 4 drives the adjusting block 6 to descend, the adjusting block 6 will synchronously drive the L-shaped pointer 18 on it to descend, and then with the cooperation of the scale 17, the adjustment range of the adjusting block 6 and the tension wheel 12 can be quantified.

[0071] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An automatic tensioning device for steam screen winding, characterized in that, include: A frame (1) is fixedly installed on the winding machine; T-shaped slots (2) are formed on the frame (1); Two linear guide rails (3) are symmetrically arranged inside the T-shaped groove (2), and both linear guide rails (3) are fixedly installed on the frame (1); The mounting block (4) is slidably connected to the two linear guides (3) by a slider. Rotate the adjusting screw (5) mounted on the inner bottom wall of the frame (1), and the mounting block (4) is threadedly connected to the adjusting screw (5); An adjusting block (6) is fixedly installed on one side of the mounting block (4); The spacing adjustment assembly (7) is installed on the frame (1); Two first screw holes (8) are opened at a 70-degree angle on the spacing adjustment assembly (7); A second screw hole (9) is opened at a 70-degree angle on one side of the adjusting block (6); Three support rods (10) are arranged in an inverted triangle on one side of the frame (1), and the three support rods (10) are threadedly connected to the two first screw holes (8) and the second screw hole (9) respectively; And two guide wheels (11) and one tension wheel (12) arranged in an inverted triangle. Bearings are installed in the middle of the guide wheels (11) and the tension wheel (12). The guide wheels (11) and the tension wheel (12) are rotatably mounted on the corresponding support rods (10) through the bearings.

2. The automatic tensioning device for winding a steam filter screen according to claim 1, characterized in that: Both the guide wheel (11) and the tension wheel (12) are fitted with rubber anti-slip layers in their trapezoidal grooves.

3. The automatic tensioning device for winding a steam filter screen according to claim 1, characterized in that: Two scales (17) are symmetrically fixedly installed on one side of the frame (1), and L-shaped pointers (18) are fixedly installed on both sides of the adjustment block (6), with the horizontal segment of the L-shaped pointers (18) parallel to the scales (17).

4. The automatic tensioning device for winding a steam filter screen according to claim 1, characterized in that: The spacing adjustment assembly (7) includes a bidirectional lead screw (71) disposed inside the frame (1), and both ends of the bidirectional lead screw (71) are rotatably connected to the frame (1). Two L-shaped columns (72) are threadedly connected to the outer side wall of the bidirectional lead screw (71), and two first screw holes (8) are respectively opened on the two L-shaped columns (72).

5. The automatic tensioning device for winding a steam filter screen according to claim 1, characterized in that: The support rod (10) includes a connecting rod (101), and the connecting rod (101) is threadedly connected to the first screw hole (8) and the second screw hole (9) through a screw at its rear end. The other end of the connecting rod (101) is inserted with a T-shaped fixing sleeve (102), and the T-shaped fixing sleeve (102) is rotatably connected to the inner side of the connecting rod (101). A first nut (103) is fixedly installed on the inner side wall near the end of the T-shaped fixing sleeve (102). A connecting screw (104) is inserted into both the T-shaped fixing sleeve (102) and the connecting rod (101). The connecting screw (104) is threaded into the T-shaped fixing sleeve (102) through the first nut (103). The guide wheel (11) and the tension wheel (12) are rotatably mounted on the connecting screw (104) through bearings. A washer (105) is fitted on the connecting screw (104), and the washer (105) is located on one side of the guide wheel (11) and the tension wheel (12). A second nut (106) is threaded onto the outer wall of the connecting screw (104), and the second nut (106) is located on one side of the washer (105).

6. The automatic tensioning device for winding a steam filter screen according to claim 5, characterized in that: The connecting rod (101) has a slot (13) and a connecting piece (14) is fixedly installed at one end of the connecting screw (104). The protruding end of the connecting piece (14) passes through the slot (13) and is fixedly installed with an arc rod (15). The connecting rod (101) has a scale line (16).

7. The automatic tensioning device for winding a steam filter screen according to claim 1, characterized in that: It also includes a manual operation panel, which is equipped with a tension preset knob and a real-time tension pointer, and the tension pointer is connected to the bearing on the tension wheel (12) via a mechanical linkage.

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