Tool and method for replacing main transmission shaft ring type grease pump

Abstract

The invention discloses a tool and method for replacing a main transmission shaft ring type grease pump. The tool comprises a supporting plate, a suspension arm, a gear, a first C-shaped clamping jaw and a second C-shaped clamping jaw. One side of the supporting plate is rotationally connected with two handles; any handle is connected with a gear through a rotating shaft penetrating through the supporting plate. Openings of the first C-shaped clamping jaw and the second C-shaped clamping jaw are opposite, a row of groove teeth are arranged on the outer side of a wing plate on one side of the first C-shaped clamping jaw and the second C-shaped clamping jaw, and the groove teeth are meshed with the gear. The gear rotates to drive the first C-shaped clamping jaw or the second C-shaped clamping jaw to move up and down; web plates of the first C-shaped clamping jaw and the second C-shaped clamping jaw are provided with telescopic adjusting mechanisms, and bolt holes matched with the outer sleeve or the inner sleeve splicing bolts are formed in the inner buckling pieces of the wing plates on the two sides. The semicircular flange of the outer sleeve or the inner sleeve of the ring type grease pump is integrally hoisted through the tool, and the installation efficiency and precision are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metallurgical equipment maintenance, and more specifically, to a tool and method for replacing a main transmission shaft ring type dry oil pump. Background Art

[0002] The 2250mm hot rolling production line uses two inverter roughing mills, which have a pair of horizontal working rolls and a pair of support rolls above and below them, a total of four rolls, and the rolls can rotate in both positive and negative directions at the same time, so as to achieve multiple reciprocating rolling of the rolled piece, with high rigidity, and can improve the thickness accuracy and plate quality of the intermediate bad. During the reciprocating continuous rolling process of the roller spindle, one end of the roller connection is long-term erosion by cooling water, iron oxide scale and other debris, so high-viscosity glycerin must be injected into the slide of the spindle to prevent the spindle or working rolls from being worn. The ring dry oil pump is a commonly used lubrication system component for the main drive shaft of the roughing mill.

[0003] During routine maintenance of the rough rolling mill, it was found that there was no fresh glycerin at each refueling point of the main transmission shaft. After analyzing and finding the cause, it was found that the ring type dry oil pump was faulty. In order to ensure that the transmission shaft can operate normally during the tight production task, it is necessary to use the downtime to replace the ring type dry oil pump. Figure 1 The ring-type dry oil pump includes an outer sleeve and an inner sleeve formed by splicing two semicircular flanges. Generally, it is necessary to hoist the upper and lower halves of the outer sleeve and the inner sleeve respectively through two hand hoists, and perform four hoists. When hoisting the upper half of the outer sleeve or the inner sleeve, the lower half needs to be lifted with a mechanical jack to prevent the lower half from falling due to the removal of the upper half, which may cause danger. The traditional method of replacing the ring-type dry oil pump requires a lot of man-hours, and the hand hoist has the problem of tilting and tilting during the hoisting operation, and the flanges on both sides need to be aligned when reinstalling. Therefore, it is necessary to develop a safer and faster method for replacing the main transmission shaft ring-type dry oil pump. Summary of the invention

[0004] In view of the above-mentioned defects in the prior art, the present invention provides a tool and method for replacing a main transmission shaft ring type dry oil pump, which changes the hand-pulled hoisting method into a mechanical lifting device to lift the replaced equipment as a whole, which not only reduces the replacement time and improves the operation safety, but also solves the problem of complex equipment coordination.

[0005] To achieve the above-mentioned object, on the one hand, the present invention provides a tool for replacing a main transmission shaft ring-type dry oil pump, wherein the ring-type dry oil pump comprises an outer sleeve and an inner sleeve formed by bolting two semicircular flanges; the inner sleeve is sleeved on the outer wall of the main transmission shaft; the tool comprises a support plate, a suspension arm, a gear, a first C-shaped claw and a second C-shaped claw;

[0006] The suspension arm is arranged at one end of the support plate and is perpendicular to the support plate; one side of the support plate is rotatably connected to two handles; any of the handles is connected to a gear through a rotating shaft that passes through the support plate; the openings of the first C-shaped claw and the second C-shaped claw are opposite to each other, and a row of groove teeth are arranged on the outer side of one side wing plate of the first C-shaped claw, and the groove teeth are meshed with the gear; the rotation of the gear can drive the first C-shaped claw or the second C-shaped claw to move up and down;

[0007] The webs of the first C-shaped clamping claw and the second C-shaped clamping claw are provided with telescopic adjustment mechanisms, and the inner buckles of the wing plates on both sides are provided with bolt holes that match the splicing bolts of the outer sleeve or the inner sleeve.

[0008] Furthermore, a spring pawl is provided on the support plate near the groove teeth, which clamps the groove teeth from one direction to prevent the gear from retreating.

[0009] Furthermore, the telescopic adjustment mechanism is a sliding and pull-out telescopic structure.

[0010] Furthermore, a groove is formed on a side of a wing plate of the first C-shaped claw and the second C-shaped claw facing the gear, and the groove teeth are formed in the groove.

[0011] Furthermore, a hanging hole is provided in the middle of the hanging arm.

[0012] On the other hand, the present invention provides a method for replacing a main transmission shaft ring type dry oil pump, characterized in that the main transmission shaft ring type dry oil pump replacement tool as described above is used, comprising the following steps:

[0013] S1. Disconnect all external connections of the ring-type dry oil pump jacket;

[0014] S2. Remove the anchor bolts of the jacket and install long bolts to separate the two semicircular flanges of the jacket by a certain gap;

[0015] S3, placing the tooling on one side of the annular dry oil pump, first extending the telescopic adjustment structure of the C-shaped claw, controlling the upper and lower positions of the C-shaped claw by the handle, aligning the first C-shaped claw and the second C-shaped claw with the gaps between the two semicircular flanges of the outer sleeve, and then contracting the telescopic adjustment structure to make the first C-shaped claw and the second C-shaped claw fit into the gap of the outer sleeve, aligning the bolt holes with the anchor bolt holes of the outer sleeve, and then fixing the upper semicircular flange of the outer sleeve with the first C-shaped claw, the lower semicircular flange and the second C-shaped claw by bolts; removing the long bolts;

[0016] S4, respectively controlling the upper and lower positions of the C-shaped claws by the handle so that the upper and lower separation distance of the first C-shaped claw and the second C-shaped claw is greater than the diameter of the main transmission shaft; the crane lifts out the entire tooling and the outer jacket through the suspension arm for removal;

[0017] S5, removing the inner sleeve of the ring-type dry oil pump by adopting steps similar to S2 to S4;

[0018] S6. When reinstalling the new ring-type dry oil pump, follow the above removal process in reverse order, first install the inner sleeve, then the outer sleeve, and finally make external connections to the outer sleeve.

[0019] Furthermore, in the step S1, the glycerin pipeline is first removed, then the outer sleeve of the annular dry oil pump and the bearing seat connecting plate are removed, and then the connection between the glycerin pipeline and the annular dry oil pump is removed again, and the glycerin pipeline is disconnected, thereby disconnecting all external connections of the annular dry oil pump.

[0020] Furthermore, after step S5, the contact surface between the ring-type dry oil pump and the main transmission shaft is cleaned and then reinstalled in step S6.

[0021] Compared with the prior art, the above invention has the following advantages or beneficial effects:

[0022] (1) The tooling designed in the present invention can be stably connected to the semicircular flange of the outer sleeve or the inner sleeve of the ring-type dry oil pump, and can carry the semicircular flange of the outer sleeve or the inner sleeve to move up, down, left and right, thus meeting the need for overall lifting of the outer sleeve and the inner sleeve, and is novel.

[0023] (2) The present invention adopts a newly designed tooling to improve the original ring-type dry oil pump replacement method while ensuring construction quality and safety. It not only reduces the number of hoisting times and saves construction time, but also allows for safer hoisting operations.

[0024] (3) The present invention hoists the semicircular flange of the outer sleeve or the inner sleeve of the ring-type dry oil pump as a whole, thereby overcoming the problem that the flanges on both sides need to be aligned when the ring-type dry oil pump is reinstalled, thereby improving the installation efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and emphasis is placed on illustrating the subject matter of the present invention.

[0026] Figure 1 The main and cross-sectional views of the inner and outer sleeve structures of a ring-type dry oil pump according to an embodiment of the present invention;

[0027] Figure 2 A front view of a tool for replacing a ring-type dry oil pump according to an embodiment of the present invention;

[0028] Figure 3 A side view of a tool for replacing a ring-type dry oil pump according to an embodiment of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the positional relationship between the ring-type dry oil pump and the main transmission shaft according to an embodiment of the present invention;

[0030] Figure 5 It is a structural schematic diagram of a replacement ring-type dry oil pump jacket according to an embodiment of the present invention;

[0031] Among them, 1. annular dry oil pump; 11. outer sleeve; 12. inner sleeve; 13. main transmission shaft; 14. bearing seat; 15. connecting plate; 21. support plate; 22. suspension arm; 23. gear; 24. first C-shaped claw; 25. second C-shaped claw; 26. handle; 27. rotating shaft; 31. grooved teeth; 32. telescopic adjustment mechanism; 33. bolt hole; 34. spring ratchet; 35. lifting hole. DETAILED DESCRIPTION

[0032] The following is a further description of the structure of the present invention in conjunction with the accompanying drawings and specific embodiments, but it is not intended to limit the present invention. The execution order of actions, steps, etc. in the devices and methods shown in the claims, specifications and drawings of the present invention can be implemented in any order as long as there is no special explicit limitation on the order and the output of the previous processing is not used in the subsequent processing.

[0033] It should also be noted that in the description of this application, the terms "upper", "lower", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0034] The technical solution of the present invention is described in detail below with specific embodiments and examples.

[0035] Example

[0036] See attached Figure 2 and Figure 3 The present embodiment provides a tool for replacing a main transmission shaft ring type dry oil pump, comprising a support plate 21, a suspension arm 22, a gear 23, a first C-shaped claw 24 and a second C-shaped claw 25; the suspension arm 22 is arranged at one end of the support plate 21 and is perpendicular to the support plate 21; one side of the support plate 21 is rotatably connected to two handles 26; any handle is connected to the gear 23 through a rotating shaft 27 that passes through the support plate 21; the openings of the first C-shaped claw 24 and the second C-shaped claw 25 are opposite to each other, and a row of groove teeth 31 are provided on the outer side of one side wing plate of them, and the groove teeth 31 are meshed with the gear 23; the rotation of the gear 23 can drive the first C-shaped claw 24 or the second C-shaped claw 25 to move up and down; the webs of the first C-shaped claw 24 and the second C-shaped claw 25 are provided with a telescopic adjustment mechanism 32, and the inner buckle pieces of the two side wing plates are provided with bolt holes 33 that match the splicing bolts of the outer sleeve 11 or the inner sleeve 12.

[0037] The tooling realizes left-right movement of one side of the first C-shaped claw 24 and the second C-shaped claw 25 through the telescopic adjustment mechanism 32 , and realizes up-and-down movement of the first C-shaped claw 24 and the second C-shaped claw 25 by rotating the gear 23 through the handle 26 .

[0038] As a preferred technical solution, further: a spring pawl 34 is provided on the support plate 21 near the groove teeth 31, which clamps the groove teeth 31 from one direction to prevent the gear from retreating when no external force is applied. When the external force pushes the spring pawl away from the groove teeth, it does not affect the movement of the C-shaped claw.

[0039] As a preferred technical solution, further: the telescopic adjustment mechanism 32 is a sliding pull-out telescopic structure. It is understandable that the telescopic adjustment mechanism 32 can also adopt other commonly used spring buckle type, sliding latch type telescopic structure, etc., as long as it can meet the telescopic function in one direction.

[0040] As a preferred technical solution, further: a groove is provided on one side of the wing plate of the first C-shaped claw 24 and the second C-shaped claw 25 facing the gear 23, and a groove tooth 31 is provided in the groove. The gear 23 drives the groove tooth 31 in the groove to prevent the C-shaped claw from shaking during the lifting process.

[0041] As a preferred technical solution, further: a hanging hole 35 is opened in the middle of the suspension arm 22.

[0042] See attached Figure 1 and 4 The annular dry oil pump 1 to be replaced includes an outer sleeve 11 and an inner sleeve 12 formed by bolting two semicircular flanges; the inner sleeve 12 is sleeved on the outer wall of the main transmission shaft 13. The annular dry oil pump 1 is fixedly connected to the shaft sleeve seat 14 of the main transmission shaft 13 through a connecting plate 15. The main transmission shaft 13 includes an upper transmission shaft and a lower transmission shaft.

[0043] Replacing the main transmission shaft ring type dry oil pump using the above-mentioned tooling includes the following steps:

[0044] S1. Disconnect all external connections of the annular dry oil pump jacket. Preferably, the glycerin pipeline is removed first, followed by the removal of the annular dry oil pump jacket and the bearing seat connecting plate, and then the connection between the glycerin pipeline and the annular dry oil pump is removed, and the glycerin pipeline is disconnected, thereby disconnecting all external connections of the annular dry oil pump. If necessary, two 5*5 angle irons are welded at both ends of the bearing seat 14 to extend outward as temporary platform legs, and two springboards are laid as working platforms, and both ends of the springboards are tied securely. After the pipe joints are removed, clean them and use a percussion wrench to remove the 6 M30 bolts. If a person is standing on the springboard and cannot carry it, use a crane to lift it off.

[0045] S2. Remove the jacket anchor bolts and install long bolts to separate the two semicircular flanges of the jacket by a certain gap. Usually, there are two jacket anchor bolts on one side. After removing one bolt each, install long screw bolts to separate the upper and lower flanges of the jacket.

[0046] S3. See Appendix Figure 5 , place the tooling on one side of the annular dry oil pump, first extend the telescopic adjustment structure 32 of the C-shaped claw, control the upper and lower positions of the C-shaped claw by the handle 26, align the first C-shaped claw 24 and the second C-shaped claw 25 with the gaps between the two semicircular flanges of the outer sleeve, and then retract the telescopic adjustment structure 32 to make the first C-shaped claw 24 and the second C-shaped claw 25 fit into the gap of the outer sleeve, align the bolt holes 33 with the anchor bolt holes of the outer sleeve, and then fix the upper semicircular flange of the outer sleeve with the first C-shaped claw 24, the lower semicircular flange and the second C-shaped claw 25 with bolts; remove the long bolts.

[0047] S4. The upper and lower positions of the C-shaped claws are controlled by the handle 26, so that the upper and lower separation distance of the first C-shaped claw 24 and the second C-shaped claw 25 is greater than the diameter of the main transmission shaft; the crane lifts out the entire tooling and the outer jacket through the suspension arm 22. If a spring ratchet is installed, it can play a role in preventing falling, preventing the outer jacket of the ring-type dry oil pump from falling off during the lifting process, causing a lifting accident.

[0048] S5, remove the inner sleeve of the ring-type dry oil pump by adopting steps similar to S2 to S4. Preferably, clean the contact surface between the ring-type dry oil pump and the main transmission shaft.

[0049] S6. When reinstalling the new ring-type dry oil pump, follow the above removal process in reverse, first install the inner sleeve, then install the outer sleeve, and finally make the external connection of the outer sleeve. When reinstalling the inner sleeve, use two feeler gauges to measure the tightness of the anchor bolts to avoid deflection of the inner sleeve caused by one-sided tightening.

[0050] From the above description, it can be seen that the present invention improves on the original hoisting method, changing the original four separate hoists to two integral hoists. In addition to saving the number of hoists, the original hoisting method is improved to avoid the original hoist being subjected to force on the separate hand chain hoist during hoisting, reducing the danger while saving more time and construction intensity. At the same time, the present invention avoids the risk of the lower half of the pump body falling, and uses the integral hoisting method to hoist the outer and inner sleeves as a whole, without the need to use a mechanical jack to lift them, making it safer and more convenient to replace the annular dry oil pump.

[0051] In summary, the present invention provides a tool and method for replacing a main transmission shaft ring-type dry oil pump. The tool comprises a support plate, a suspension arm, a gear, a first C-shaped claw and a second C-shaped claw; one side of the support plate is rotatably connected to two handles; any of the handles is connected to a gear through a rotating shaft that passes through the support plate; the openings of the first C-shaped claw and the second C-shaped claw are opposite, and a row of groove teeth are provided on the outer side of one side wing plate of them, and the groove teeth are meshed with the gear; the rotation of the gear can drive the first C-shaped claw or the second C-shaped claw to move up and down; the webs of the first C-shaped claw and the second C-shaped claw are provided with a telescopic adjustment mechanism, and the inner buckles of the two side wing plates are provided with bolt holes that match the splicing bolts of the outer sleeve or the inner sleeve. The present invention hoists the semicircular flange of the outer sleeve or the inner sleeve of the ring-type dry oil pump as a whole through the tool, thereby improving the installation efficiency and accuracy.

[0052] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.

[0053] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A tool for replacing a main transmission shaft ring-type dry oil pump, the ring-type dry oil pump comprising an outer sleeve (11) and an inner sleeve (12) formed by bolting two semicircular flanges; the inner sleeve (12) is sleeved on the outer wall of the main transmission shaft (13); characterized in that: The tooling comprises a support plate (21), a suspension arm (22), a gear (23), a first C-shaped claw (24) and a second C-shaped claw (25); The suspension arm (22) is arranged at one end of the support plate (21) and is perpendicular to the support plate (21); one side of the support plate (21) is rotatably connected to two handles (26); any of the handles is connected to a gear (23) via a rotating shaft (27) penetrating the support plate (21); the openings of the first C-shaped claw (24) and the second C-shaped claw (25) are opposite to each other, and a row of groove teeth (31) is provided on the outer side of one side wing plate of the first C-shaped claw (24) and the second C-shaped claw (25) is meshed with the gear (23); the rotation of the gear (23) can drive the first C-shaped claw (24) or the second C-shaped claw (25) to move up and down; The webs of the first C-shaped clamping claw (24) and the second C-shaped clamping claw (25) are provided with telescopic adjustment mechanisms (32), and the inner buckles of the two side wing plates are provided with bolt holes (33) that match the splicing bolts of the outer sleeve (11) or the inner sleeve (12).

2. A tool for replacing a main transmission shaft ring type dry oil pump according to claim 1, characterized in that: A spring pawl (34) is provided on the support plate (21) near the groove teeth (31) to clamp the groove teeth (31) from one direction to prevent the gear from retreating.

3. The tool for replacing the main transmission shaft ring type dry oil pump according to claim 1, characterized in that: The telescopic adjustment mechanism (32) is a sliding and pull-out telescopic structure.

4. The tooling for replacing the main transmission shaft ring type dry oil pump according to claim 1, characterized in that: A groove is provided on one side of the wing plates of the first C-shaped claw (24) and the second C-shaped claw (25) facing the gear (23), and the groove teeth (31) are provided in the groove.

5. The tool for replacing the main transmission shaft ring type dry oil pump according to claim 1, characterized in that: A hanging hole (35) is provided in the middle of the hanging arm (22).

6. A method for replacing a main transmission shaft ring type dry oil pump, characterized in that: The tooling for replacing the main transmission shaft ring type dry oil pump according to any one of claims 1 to 5 comprises the following steps: S1. Disconnect all external connections of the ring-type dry oil pump jacket; S2. Remove the anchor bolts of the jacket and install long bolts to separate the two semicircular flanges of the jacket by a certain gap; S3, placing the tooling on one side of the annular dry oil pump, first extending the telescopic adjustment structure (32) of the C-shaped claw, controlling the upper and lower positions of the C-shaped claw by means of the handle (26), aligning the first C-shaped claw (24) and the second C-shaped claw (25) with the gaps between the two semicircular flanges of the outer sleeve, then contracting the telescopic adjustment structure (32), so that the first C-shaped claw (24) and the second C-shaped claw (25) are clamped into the gap of the outer sleeve, and the bolt holes (33) are aligned with the anchor bolt holes of the outer sleeve, and then fixing and connecting the upper semicircular flange of the outer sleeve with the first C-shaped claw (24), and the lower semicircular flange and the second C-shaped claw (25) by means of bolts; and removing the long bolts; S4, respectively controlling the upper and lower positions of the C-shaped claws by means of a handle (26) so that the upper and lower separation distance of the first C-shaped claw (24) and the second C-shaped claw (25) is greater than the diameter of the main transmission shaft; and the crane lifts out and removes the entire tooling and the outer jacket by means of the suspension arm (22); S5, removing the inner sleeve of the ring-type dry oil pump by adopting steps similar to S2 to S4; S6. When reinstalling the new ring-type dry oil pump, follow the above removal process in reverse order, first install the inner sleeve, then the outer sleeve, and finally make external connections to the outer sleeve.

7. A method for replacing a main transmission shaft ring type dry oil pump according to claim 6, characterized in that: In step S1, the glycerin pipeline is first removed, then the outer sleeve of the annular dry oil pump and the connecting plate of the bearing seat are removed, and then the connection between the glycerin pipeline and the annular dry oil pump is removed, and the glycerin pipeline is disconnected, thereby disconnecting all external connections of the annular dry oil pump.

8. A method for replacing a main transmission shaft ring type dry oil pump according to claim 6, characterized in that: After step S5, the contact surface between the ring-type dry oil pump and the main transmission shaft is cleaned and then reinstalled in step S6.

Images