Novel shaft mounting device

Abstract

The utility model relates to the technical field of equipment installation, and particularly discloses a novel shaft installation device which comprises an installation trolley, an installation track is connected to the bottom end of the installation trolley, adjusting mechanisms are arranged at the four corners of the bottom end of the installation track, a shaft is arranged at the upper end of the installation trolley, and a pushing mechanism is arranged between the shaft and the installation trolley. A temperature rising mechanism is connected to the right side of the mounting trolley, a mounting hole is formed in the right side of the temperature rising mechanism, and a pulling mechanism is arranged on the right side of the mounting hole; the pushing mechanism comprises a positioning plate, a thrust oil cylinder and a pushing plate, before the shaft is assembled into the mounting hole, the temperature of the shaft is reduced, the temperature of the mounting hole is increased, after the shaft is assembled into the mounting hole, the temperature increasing mechanism is closed, and after the mounting hole is slowly cooled to the room temperature, the shaft is automatically expanded in the hole to complete interference fit mounting; the installation difficulty of interference fit of a large shaft is overcome, and the efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of equipment installation, and specifically relates to a novel shaft installation device. Background Art

[0002] The installation of shafts and holes is usually a clearance fit. In some specific occasions, an interference fit is required between the shaft and the hole. Usually, the principle of thermal expansion and contraction is used to complete the assembly, that is, the hole is heated or the shaft is frozen to meet the installation clearance before installation, or both hole heating and shaft freezing are used. No matter which method is used, the assembly must be completed in a very short time to prevent the temperature of the shaft and the hole from reaching equilibrium due to a long time, resulting in the problem of incomplete installation and jamming. In particular, the installation of large shafts requires the use of a crane for transportation, which results in a slower installation speed and more difficulty in controlling the reliability of the installation. Utility Model Content

[0003] The purpose of the utility model is to provide a novel shaft installation device to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A novel shaft installation device comprises a mounting trolley, the bottom end of the mounting trolley is connected to a mounting track, the four corners of the bottom end of the mounting track are provided with adjustment mechanisms, the upper end of the mounting trolley is provided with a shaft, a pushing mechanism is provided between the shaft and the mounting trolley, a temperature reduction mechanism is provided on the outer side of the shaft, a temperature increase mechanism is connected to the right side of the mounting trolley, a mounting hole is provided on the right side of the temperature increase mechanism, and a pulling mechanism is provided on the right side of the mounting hole;

[0006] The pushing mechanism includes a positioning plate, a thrust cylinder and a pushing plate, wherein the positioning plate is connected to the upper end of the mounting trolley, the thrust cylinder is connected to the middle of the right side of the positioning plate, the middle of the left side of the pushing plate is connected to the output end of the thrust cylinder, and the right side of the pushing plate is in contact with the shaft;

[0007] The temperature drop mechanism comprises an outer cover, a top plate, a mounting notch, a semiconductor cooling sheet, an assembly plate, a snap-fit ​​notch and a sealing plate. The outer cover is arranged outside the shaft and is located at the upper end of the mounting trolley. The outer cover comprises side plates arranged at the front and rear sides and the left side. The top plate is connected to the upper end of the side plates. The mounting notch is arranged in the middle of the front and rear side plates and the mounting notch penetrates the side plates front and back. The semiconductor cooling sheet is embedded in the mounting notch. The sealing plate is symmetrically arranged at the right ends of both sides of the outer cover front and back. The assembly plate is symmetrically arranged at both sides of the sealing plate front and back, and the assembly plate is slidably matched with the front and rear side plates. The snap-fit ​​notch is arranged at the opposite side of the two assembly plates, and both front and rear ends of the sealing plate are snap-fitted in the snap-fit ​​notch.

[0008] The temperature rise mechanism includes an annular plate, an annular notch and an annular heating plate, wherein the annular plate is connected to the right end of the mounting trolley, the annular notch is opened on the right side of the annular plate, the annular heating plate is embedded in the annular notch, and the annular heating plate and the annular plate are both fitted with the mounting hole;

[0009] The pulling mechanism includes a pulling cylinder, a threaded hole and a pulling screw. The pulling cylinder is connected to the middle of the right side of the mounting hole. The threaded hole is opened in the middle of the right side of the shaft. The pulling screw is connected to the pulling cylinder. The pulling screw is screwed into the threaded hole at the right end of the shaft, and the shaft is completely pulled into the mounting hole through the pulling cylinder.

[0010] Preferably, the adjustment mechanism includes a track leg, a height adjustment screw and a sleeve, the track leg is arranged at the bottom end of the mounting track, the sleeve bearing is connected to the middle of the top of the track leg, the height adjustment screw is arranged in the sleeve, and the outer wall of the height adjustment screw is threadedly connected to the sleeve by a thread, the top end of the height adjustment screw passes through the sleeve and is connected to the mounting track, the bottom end of the height adjustment screw passes through the sleeve and is in the track leg, the sleeve is rotated to make the height adjustment screw rise and fall in the sleeve, thereby changing the distance between the upper end of the sleeve and the mounting track, and adjusting the height of the upper shaft of the mounting trolley so that the shaft is flush with the mounting hole.

[0011] Preferably, the cold end of the semiconductor refrigeration chip is in the outer cover, and the hot end of the semiconductor refrigeration chip is connected to the outside of the outer cover. The heat in the outer cover and the heat at the hot end of the semiconductor refrigeration chip are better dissipated through the cold end of the semiconductor refrigeration chip.

[0012] Preferably, the upper end of the sealing plate is symmetrically connected with lifting ears at the front and rear ends, and the lifting ears make it easy for an operator to lift the sealing plate, thereby facilitating the subsequent assembly of the shaft.

[0013] Preferably, a heat insulation plate is connected to the right side of the sealing plate, and the front and rear sides of the heat insulation plate are slidably matched with the assembly plate. A gap is left between the heat insulation plate and the lifting ear to isolate the heat near the mounting hole, making it difficult for the heat to enter the outer cover, thereby ensuring the temperature reduction effect of the shaft.

[0014] Preferably, the inner diameter of the annular plate is consistent with the inner diameter of the mounting hole, and the shaft is flush with the mounting hole, ensuring that the shaft can be smoothly assembled into the mounting hole.

[0015] Preferably, the left end of the tension screw passes through the mounting hole and is threadedly connected to the threaded hole through an external thread. The shaft is pushed to the vicinity of the interference fit surface of the mounting hole by a thrust cylinder, the tension screw is screwed into the threaded hole at the right end of the shaft, and the shaft is completely pulled into the mounting hole by the tension cylinder.

[0016] Compared with the prior art, the utility model has the following beneficial effects: when the utility model is in use, before the shaft is assembled into the mounting hole, the temperature of the shaft is reduced to the required temperature through the semiconductor refrigeration plate in the outer cover, and the temperature of the mounting hole is increased to the required temperature through the annular heating plate, and the sealing plate is pulled out through the lifting ear, and the outer cover is pulled away from the mounting trolley from right to left, and the thrust cylinder is started to push the shaft to the vicinity of the interference fit surface of the mounting hole, and the tension screw is screwed into the threaded hole at the right end of the shaft. The tension screw is pulled by the tension cylinder to completely pull the shaft into the mounting hole, and the temperature rise mechanism is closed. After the mounting hole is slowly cooled to room temperature, the shaft is automatically expanded in the hole to complete the interference fit installation, thereby overcoming the installation difficulties of interference fit of large shafts and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a new type of shaft mounting device.

[0018] Figure 2 It is a schematic cross-sectional diagram of a cover body of a novel shaft mounting device.

[0019] Figure 3 Schematic diagram of the top of the mounting trolley for a new type of shaft mounting device.

[0020] Figure 4 A schematic diagram of a new type of shaft mounting device.

[0021] Figure 5 Schematic diagram of a driving mechanism of a new shaft mounting device.

[0022] Figure 6 A schematic diagram of an adjustment mechanism for a novel shaft mounting device.

[0023] In the figure: 1. Install the trolley; 2. Install the track; 3. Axle; 4. Install hole; 5. Positioning plate; 6. Thrust cylinder; 7. Push plate; 8. Outer cover; 81. Side plate; 9. Top plate; 10. Install notch; 11. Semiconductor cooling plate; 12. Assembly plate; 13. Engagement notch; 14. Sealing plate; 141. Lifting ear; 142. Heat insulation plate; 15. Annular plate; 16. Annular notch; 17. Annular heating plate; 18. Tension cylinder; 19. Threaded hole; 20. Tension screw; 21. Track leg; 22. Height adjustment screw; 23. Sleeve. DETAILED DESCRIPTION

[0024] Example 1

[0025] See also Figure 1-Figure 6As shown, a novel shaft installation device comprises a mounting trolley 1, the bottom end of the mounting trolley 1 is connected to a mounting track 2, the four corners of the bottom end of the mounting track 2 are provided with adjustment mechanisms, the upper end of the mounting trolley 1 is provided with a shaft 3, a pushing mechanism is provided between the shaft 3 and the mounting trolley 1, a temperature reduction mechanism is provided on the outer side of the shaft 3, a temperature increase mechanism is connected to the right side of the mounting trolley 1, a mounting hole 4 is provided on the right side of the temperature increase mechanism, and a pulling mechanism is provided on the right side of the mounting hole 4;

[0026] The pushing mechanism includes a positioning plate 5, a thrust cylinder 6 and a pushing plate 7. The positioning plate 5 is connected to the upper end of the mounting trolley 1, the thrust cylinder 6 is connected to the middle of the right side of the positioning plate 5, the middle of the left side of the pushing plate 7 is connected to the output end of the thrust cylinder 6, and the right side of the pushing plate 7 is in contact with the shaft 3.

[0027] The temperature drop mechanism comprises an outer cover 8, a top plate 9, a mounting slot 10, a semiconductor cooling sheet 11, an assembly plate 12, a snap-fit ​​slot 13 and a sealing plate 14. The outer cover 8 is arranged outside the shaft 3, and the outer cover 8 is at the upper end of the mounting trolley 1. The outer cover 8 comprises side plates 81 arranged at the front and rear sides and the left side. The top plate 9 is connected to the upper end of the side plate 81. The mounting slot 10 is arranged in the middle of the front and rear side plates 81, and the mounting slot 10 penetrates the side plates 81 front and back. The semiconductor cooling sheet 11 is embedded in the mounting slot 10. The sealing plate 14 is symmetrically arranged at the right ends of both sides of the outer cover 8 front and back. The assembly plate 12 is symmetrically arranged at both sides of the sealing plate 14 front and back, and the assembly plate 12 is slidably matched with the front and rear side plates 81. The snap-fit ​​slot 13 is arranged at the opposite side of the two assembly plates 12, and the front and rear ends of the sealing plate 14 are snap-fitted in the snap-fit ​​slot 13.

[0028] The temperature rise mechanism includes an annular plate 15, an annular notch 16 and an annular heating plate 17. The annular plate 15 is connected to the right end of the mounting trolley 1. The annular notch 16 is opened on the right side of the annular plate 15. The annular heating plate 17 is embedded in the annular notch 16. The annular heating plate 17 and the annular plate 15 are both in contact with the mounting hole 4.

[0029] The pulling mechanism includes a pulling cylinder 18, a threaded hole 19 and a pulling screw 20. The pulling cylinder 18 is connected to the middle of the right side of the mounting hole 4. The threaded hole 19 is opened in the middle of the right side of the shaft 3. The pulling screw 20 is connected to the pulling cylinder 18. The pulling screw 20 is screwed into the threaded hole 19 at the right end of the shaft 3, and the shaft 3 is completely pulled into the mounting hole 4 through the pulling cylinder 18.

[0030] refer to Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, the adjustment mechanism includes a track leg 21, a height adjustment screw 22 and a sleeve 23. The track leg 21 is arranged at the bottom end of the mounting track 2. The sleeve 23 is bearing-connected to the middle of the top of the track leg 21. The height adjustment screw 22 is arranged in the sleeve 23, and the outer wall of the height adjustment screw 22 is threadedly connected to the sleeve 23 through a thread. The top end of the height adjustment screw 22 passes through the sleeve 23 and is connected to the mounting track 2. The bottom end of the height adjustment screw 22 passes through the sleeve 23 and is in the track leg 21. The sleeve 23 is rotated to make the height adjustment screw 22 rise and fall in the sleeve 23, thereby changing the distance between the upper end of the sleeve 23 and the mounting track 2, and adjusting the height of the upper shaft of the mounting trolley 1 so that the shaft 3 is flush with the mounting hole 4.

[0031] refer to Figure 1 and Figure 2 As shown, the cold end of the semiconductor refrigeration sheet 11 is in the outer cover 8, and the hot end of the semiconductor refrigeration sheet 11 is connected to the outside of the outer cover 8. The heat in the outer cover 8 is dissipated through the cold end of the semiconductor refrigeration sheet 11, and the heat at the hot end of the semiconductor refrigeration sheet 11 is better dissipated.

[0032] refer to Figure 1-Figure 3 As shown, the upper end of the sealing plate 14 is symmetrically connected with lifting ears 141 at the front and rear ends, and the lifting ears are used to facilitate the operator to lift the sealing plate 14, thereby facilitating the subsequent assembly of the shaft 3.

[0033] refer to Figure 1-Figure 3 As shown, a heat insulating plate 142 is connected to the right side of the sealing plate 14. The front and rear sides of the heat insulating plate 142 are slidably matched with the assembly plate 12. A gap is left between the heat insulating plate 142 and the lifting ear 141 to isolate the heat near the mounting hole 4, so that the heat is not easy to enter the outer cover 8, thereby ensuring the temperature reduction effect of the shaft 3.

[0034] refer to Figure 3 As shown, the inner diameter of the annular plate 15 is consistent with the inner diameter of the mounting hole 4 , and the shaft 3 is flush with the mounting hole 4 , ensuring that the shaft 3 can be smoothly assembled into the mounting hole 4 .

[0035] refer to Figure 1 , Figure 2 and Figure 4 As shown, the left end of the tension screw 20 passes through the mounting hole 4 and is threadedly connected to the threaded hole 19 through an external thread. The thrust cylinder 6 is used to push the shaft 3 to the vicinity of the interference fit surface of the mounting hole 4, and the tension screw 20 is screwed into the threaded hole 19 at the right end of the shaft 3. The shaft 3 is completely pulled into the mounting hole 4 by the tension cylinder 18.

[0036] Working principle: lift the shaft 3 to the upper end of the installation trolley 1, and make the pushing plate 7 contact with the shaft 3, set the outer cover 8 at the upper end of the installation trolley 1 and on the outside of the shaft 3, push the installation trolley 1, make the annular plate 15 and the annular heating plate 17 contact with the mounting hole 4, turn on the semiconductor refrigeration plate 11 and the annular heating plate 17, respectively reduce the temperature of the shaft 3 and increase the temperature of the mounting hole 4. After the temperature adjustment is completed, the operator lifts the sealing plate 14 through the lifting ear 141, starts the thrust cylinder 6, pushes the shaft 3 to the vicinity of the interference fit surface of the mounting hole 4, screws the tension screw 20 into the threaded hole 19 at the right end of the shaft 3, pulls the tension screw 20 through the tension cylinder 18, thereby completely pulling the shaft 3 into the mounting hole 4, closes the temperature rise mechanism, and after the mounting hole 4 slowly cools to room temperature, the shaft 3 is automatically expanded in the hole to complete the interference fit installation.

[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel shaft mounting device, comprising a mounting trolley (1), characterized in that: The bottom end of the installation trolley (1) is connected to a mounting track (2), and the four corners of the bottom end of the installation track (2) are provided with adjustment mechanisms. The top end of the installation trolley (1) is provided with a shaft (3), and a pushing mechanism is provided between the shaft (3) and the installation trolley (1). A temperature reduction mechanism is provided on the outside of the shaft (3). The right side of the installation trolley (1) is connected to a temperature increase mechanism, and a mounting hole (4) is provided on the right side of the temperature increase mechanism. A pulling mechanism is provided on the right side of the mounting hole (4); The pushing mechanism comprises a positioning plate (5), a thrust cylinder (6) and a pushing plate (7), wherein the positioning plate (5) is connected to the upper end of the mounting trolley (1), the thrust cylinder (6) is connected to the middle of the right side of the positioning plate (5), the middle of the left side of the pushing plate (7) is connected to the output end of the thrust cylinder (6), and the right side of the pushing plate (7) is in contact with the shaft (3); The temperature reduction mechanism comprises an outer cover (8), a top plate (9), an installation slot (10), a semiconductor cooling plate (11), an assembly plate (12), a locking slot (13) and a sealing plate (14); the outer cover (8) is arranged on the outside of the shaft (3), and the outer cover (8) is located at the upper end of the installation trolley (1); the outer cover (8) comprises side plates (81) arranged on the front and rear sides and the left side; the top plate (9) is connected to the upper end of the side plates (81); the installation slot (10) is opened in the middle of the front and rear side plates (81), and the installation slot (10) penetrates the side plate (81) front and back, the semiconductor cooling plate (11) is embedded in the installation groove (10), the sealing plate (14) is symmetrically arranged at the right ends of both sides of the outer cover (8) front and back, the assembly plate (12) is symmetrically arranged at both sides of the sealing plate (14), and the assembly plate (12) is slidably matched with the front and rear side plates (81), the engaging groove (13) is opened on the opposite side of the two assembly plates (12), and the front and rear ends of the sealing plate (14) are both engaged in the engaging groove (13); The temperature rise mechanism comprises an annular plate (15), an annular notch (16) and an annular heating plate (17), wherein the annular plate (15) is connected to the right end of the mounting trolley (1), the annular notch (16) is opened on the right side of the annular plate (15), the annular heating plate (17) is embedded in the annular notch (16), and the annular heating plate (17) and the annular plate (15) are both in contact with the mounting hole (4); The pulling mechanism comprises a pulling cylinder (18), a threaded hole (19) and a pulling screw (20); the pulling cylinder (18) is connected to the middle of the right side of the mounting hole (4); the threaded hole (19) is opened in the middle of the right side of the shaft (3); and the pulling screw (20) is connected to the pulling cylinder (18).

2. A novel shaft mounting device according to claim 1, characterized in that: The adjustment mechanism comprises a track leg (21), a height adjustment screw (22) and a sleeve (23); the track leg (21) is arranged at the bottom end of the mounting track (2); the sleeve (23) is bearing-connected to the middle of the top of the track leg (21); the height adjustment screw (22) is arranged in the sleeve (23); the outer wall of the height adjustment screw (22) is threadedly connected to the sleeve (23) through a thread; the top end of the height adjustment screw (22) passes through the sleeve (23) and is connected to the mounting track (2); the bottom end of the height adjustment screw (22) passes through the sleeve (23) and is located in the track leg (21).

3. A novel shaft mounting device according to claim 1, characterized in that: The cold end of the semiconductor refrigeration sheet (11) is located inside the outer cover (8), and the hot end of the semiconductor refrigeration sheet (11) is connected to the outside of the outer cover (8).

4. A novel shaft mounting device according to claim 1, characterized in that: The upper end of the sealing plate (14) is symmetrically connected to a lifting ear (141) at the front and rear ends.

5. A novel shaft mounting device according to claim 4, characterized in that: The right side of the sealing plate (14) is connected to a heat insulation plate (142), and the front and rear sides of the heat insulation plate (142) are slidably matched with the assembly plate (12), and a gap is left between the heat insulation plate (142) and the lifting ear (141).

6. A novel shaft mounting device according to claim 1, characterized in that: The inner diameter of the annular plate (15) is consistent with the inner diameter of the mounting hole (4), and the shaft (3) is flush with the mounting hole (4).

7. A novel shaft mounting device according to claim 1, characterized in that: The left end of the tension screw rod (20) passes through the mounting hole (4) and is threadedly connected to the threaded hole (19) via an external thread.

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