Heavy-load large-displacement sliding support of electric dust remover

Abstract

The heavy-load large-displacement sliding support comprises a lower sliding seat, a metal sliding plate, an upper sliding seat and a sliding friction piece, a guide sliding groove is formed between the lower sliding seat and the upper sliding seat and matched with a sliding guide rail to form a first-stage guide limiting structure, the sliding contact area is effectively reduced, and the static friction force is reduced; meanwhile, a first oil storage hole and a second oil storage hole are correspondingly formed in the guide sliding groove and the lower surface of the upper sliding seat, lubricating grease is filled into the first oil storage hole and the second oil storage hole through the oil injection hole, sufficient lubrication between the guide sliding groove and the sliding guide rail and between the two sliding friction pieces and the two metal sliding plates is guaranteed, and the static friction force is further reduced; the transverse thrust and the bending moment generated by the friction effect on the shell supporting leg are effectively reduced, and the shell supporting leg is protected. The problem that in the prior art, due to the fact that the static friction coefficient of the upper portion and the lower portion of a common sliding support is large or a shell supporting leg is long, transverse thrust generates great bending moment on the shell supporting leg is solved.

Description

Technical Field

[0001] The invention relates to the field of electrostatic precipitators, and in particular to a heavy-load large-displacement sliding support for electrostatic precipitators. Background Art

[0002] Electrostatic precipitator is a common equipment in the field of environmental engineering. Its shell is usually in a horizontal rectangular or cylindrical shape. The lower part of the shell is designed with several legs and placed on a steel platform or concrete platform. Since electrostatic precipitator is often used to treat high-temperature kiln flue gas, the change of flue gas temperature will cause the shell to expand and contract. To solve this problem, a sliding support is usually set between the lower leg and the platform.

[0003] The temperature of kiln flue gas treated by the electrostatic precipitator is usually below 250℃. The temperature of 250℃~350℃ is a high-temperature electrostatic precipitator. Common sliding supports can be used for the above two types of equipment, and the sliding displacement of the support is usually ≤50mm. When the temperature of kiln flue gas treated by the electrostatic precipitator reaches 450℃, and the flue gas volume to be treated is large and the dust removal efficiency is high, the shell of the electrostatic precipitator will become larger and longer, and the expansion displacement of its far-end support leg will be much greater than 50mm.

[0004] The friction surfaces of the upper and lower parts of common sliding supports are both metal, or metal and polytetrafluoroethylene, and the static friction coefficient is about 0.06-0.12. When the weight of the electrostatic precipitator equipment is not large or the lower legs of the electrostatic precipitator shell are not long, the lateral thrust generated by the friction is not sufficient to damage the shell legs, and it can meet the requirements of use.

[0005] However, the shell legs of some electrostatic precipitators (such as large horizontal cylindrical electrostatic precipitators) are long. When they are under heavy load, the lateral thrust generated by the friction of the supports will produce a huge bending moment on the shell legs, resulting in excessive stress on the legs and damage. Summary of the invention

[0006] The main purpose of the present invention is to provide a heavy-loaded large-displacement sliding support for an electrostatic precipitator, which can effectively reduce the static friction coefficient of sliding, thereby avoiding excessive lateral thrust caused by friction, and protecting the shell legs of the heavy-loaded electrostatic precipitator, so as to at least solve the problem in the prior art that the upper and lower parts of the sliding support have a large static friction coefficient or the shell legs are long, resulting in the lateral thrust producing a huge bending moment on the shell legs, thereby causing excessive stress on the legs and causing damage.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a heavy-load and large-displacement sliding support for an electrostatic precipitator, comprising: a lower sliding seat, an upper surface of the lower sliding seat is provided with a guide slide groove extending in a preset straight line direction, and a first oil storage hole is arranged in the guide slide groove; a metal slide plate, the metal slide plates are in two pieces, and the two metal slide plates are arranged on the upper surface of the lower sliding seat and are located on both sides of the guide slide groove; an upper sliding seat, the lower surface of the upper sliding seat is provided with a sliding guide rail matching the guide slide groove to form a primary guide limit structure so that the upper sliding seat can slide relative to the lower sliding seat along the preset straight line direction; a second oil storage hole communicating with an inner cavity thereof is provided on the lower surface of the upper sliding seat, and an oil filling hole communicating with the inner cavity thereof is provided on the side wall of the upper sliding seat; a sliding friction plate, the sliding friction plate is in two pieces, the two sliding friction plates are fixedly arranged on the lower surface of the upper sliding seat and are located on both sides of the sliding guide rail; the sliding friction plate is provided with an oil guide hole vertically opposite to the second oil storage hole; wherein the two sliding friction plates are in corresponding sliding abutment with the two metal slide plates.

[0008] Furthermore, the lower sliding seat is a rectangular plate structure, and the lower sliding seat is respectively provided with sliding limit ridges parallel to the preset straight line direction on both sides along the width direction; the upper sliding seat includes a cylindrical lower sliding body and a rectangular upper sliding body, the lower sliding body and the upper sliding body are integrally formed and the inner cavities are interconnected; wherein, the guide groove extends along the length direction of the lower sliding seat and divides the lower sliding seat into two equal parts along the width direction; the sliding guide rail, the second oil storage hole and the two sliding friction plates are all arranged on the lower surface of the lower sliding body, and the oil filling hole is opened on the side wall of the upper sliding body; the inner side walls of the two sliding limit ridges are in sliding contact with the two side walls corresponding to the upper sliding body to form a secondary guide limit structure to align the upper sliding seat so that the upper sliding seat can slide relative to the lower sliding seat along the preset straight line direction.

[0009] Furthermore, there are multiple second oil storage holes, one of which is located at the center of the lower sliding body, and the remaining multiple second oil storage holes are evenly spaced around the circumference of the lower sliding body; wherein the sliding guide rail extends radially along the lower sliding body, and an oil guide groove is opened in the middle of the sliding guide rail, and the oil guide groove is opposite to the second oil storage hole at the center of the lower sliding body; there are multiple oil guide holes, and the multiple oil guide holes correspond one-to-one to the multiple second oil storage holes arranged around the circumference of the lower sliding body.

[0010] Furthermore, there are two first oil storage holes, and the two first oil storage holes are spaced apart by a preset distance along the extension direction of the guide groove; wherein, when the upper sliding seat is located at the initial position, the oil guide groove opening is opposite to one first oil storage hole, and when the upper sliding seat slides to the extreme position, the oil guide groove opening is opposite to the other first oil storage hole.

[0011] Furthermore, when the upper sliding seat is located at the initial position or the extreme position, the two first oil storage holes are both located below the lower sliding body.

[0012] Furthermore, the two metal slides are both rectangular plates, and the length of each metal slide matches the length of the lower sliding seat; one side edge of each metal slide along the width direction is flush with the upper edge of the guide groove, and the other side edge of each metal slide along the width direction is flush with the side wall of the sliding limit ridge.

[0013] Furthermore, an annular sealing groove is provided on the bottom surface of the lower sliding body around its circumferential direction, an annular sliding sealing ring is arranged in the sealing groove, and the bottom edge of the sliding sealing ring is in sliding sealing contact with the upper surfaces of the two metal slide plates.

[0014] Furthermore, the two sliding friction plates are both semicircular structures, and the arc edges of the two sliding friction plates are flush with the inner wall of the sliding sealing ring; the straight edges of the two sliding friction plates are flush with the two upper edges of the guide groove.

[0015] Furthermore, rubber sealing sheets are respectively provided at the lower ends of the two side walls of the upper sliding body along its sliding direction, and the two side edges of the rubber sealing sheet along the width direction are in sliding sealing contact with the inner walls of the two sliding limit ridges, and the lower side edge of the rubber sealing sheet is in sliding sealing contact with the upper surfaces of the two metal slides.

[0016] The heavy-load large-displacement sliding support of the electrostatic precipitator of the technical solution of the present invention comprises a lower sliding seat, a metal slide plate, an upper sliding seat and a sliding friction plate. The lower sliding seat is fixedly installed on a steel platform or a concrete platform, and the upper sliding seat is fixedly connected to the lower support leg of the electrostatic precipitator shell. The upper surface of the lower sliding seat is provided with a guide groove extending along a preset straight line direction, and a first oil storage hole is arranged in the guide groove; there are two metal slide plates, and the two metal slide plates are arranged on the upper surface of the lower sliding seat and are located on both sides of the guide groove; the lower surface of the upper sliding seat is provided with a sliding guide rail matching the guide groove, and the sliding guide rail can be relatively slidably installed in the guide groove to form a primary guide limiting structure so that the upper sliding seat can slide relative to the lower sliding seat along the preset straight line direction; the lower surface of the upper sliding seat is provided with a second oil storage hole connected with its inner cavity, and the side wall of the upper sliding seat is provided with an oil filling hole connected with its inner cavity; there are two sliding friction plates, and the two sliding friction plates are fixedly arranged on the lower surface of the upper sliding seat and are located on both sides of the sliding guide rail; the sliding friction plate is provided with an oil guide hole vertically opposite to the second oil storage hole; the two sliding friction plates are in corresponding sliding contact with the two metal slide plates. When the temperature of the kiln flue gas treated by the electrostatic precipitator reaches 450℃ and the amount of flue gas to be treated is large, the shell of the electrostatic precipitator becomes larger and longer, and the expansion displacement of its far-end leg is much larger than 50mm. A guide groove and a sliding guide rail are arranged between the lower sliding seat and the upper sliding seat to form a primary guide limit structure, which effectively reduces the sliding contact area and reduces the static friction. At the same time, a first oil storage hole and a second oil storage hole are correspondingly opened in the guide groove and on the lower surface of the upper sliding seat, and grease is filled into the first oil storage hole and the second oil storage hole through the oil filling hole to ensure sufficient lubrication between the guide groove and the sliding guide rail and between the two sliding friction plates and the two metal slide plates, thereby further reducing the static friction. Therefore, when the shell legs of the electrostatic precipitator equipment are long and under heavy load, the lateral thrust and bending moment caused by friction on the shell legs can be effectively reduced, thereby protecting the shell legs. The invention solves the problem in the prior art that the upper and lower parts of the sliding support have a large static friction coefficient or the shell legs are long, resulting in a large bending moment caused by the lateral thrust on the shell legs, which in turn causes the legs to be damaged due to excessive stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of an optional heavy-load large-displacement sliding support for an electrostatic precipitator according to an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of a lower sliding seat of a heavy-load large-displacement sliding support of an electrostatic precipitator which can be selected according to an embodiment of the present invention;

[0020] Figure 3 It is a schematic diagram of a top view of the structure of a lower sliding seat of a heavy-load large-displacement sliding support for an electrostatic precipitator which can be selected according to an embodiment of the present invention;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of an upper sliding seat of an electrostatic precipitator heavy-load large-displacement sliding support which can be selected according to an embodiment of the present invention;

[0022] Figure 5 It is a schematic diagram of the side view structure of an upper sliding seat of an electrostatic precipitator heavy-load large-displacement sliding support which can be selected according to an embodiment of the present invention;

[0023] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0024] The above drawings include the following reference numerals:

[0025] 10. Lower sliding seat; 11. Guide slide groove; 12. First oil storage hole; 13. Sliding limit ridge; 20. Metal slide plate; 30. Upper sliding seat; 31. Sliding guide rail; 32. Second oil storage hole; 33. Oil filling hole; 34. Lower sliding body; 35. Upper sliding body; 36. Oil guide groove; 37. Sliding sealing ring; 38. Rubber sealing plate; 40. Sliding friction plate; 41. Oil guide hole. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] The heavy-load large-displacement sliding support of the electrostatic precipitator according to the embodiment of the present invention is as follows: Figures 1 to 6As shown, it includes a lower sliding seat 10, a metal slide plate 20, an upper sliding seat 30 and a sliding friction plate 40. The lower sliding seat 10 is welded and installed on the embedded steel plate of the steel platform or concrete platform, and the upper sliding seat 30 is welded and fixed to the lower leg of the electrostatic precipitator housing. The upper surface of the lower sliding seat 10 is provided with a guide groove 11 extending along a preset straight line direction, and a first oil storage hole 12 is arranged in the guide groove 11; the metal slide plate 20 is divided into two pieces, and the two metal slide plates 20 are arranged on the upper surface of the lower sliding seat 10 and on both sides of the guide groove 11; the lower surface of the upper sliding seat 30 is provided with a sliding guide rail 31 matching the guide groove 11, and the sliding guide rail 31 can be relatively slidably installed in the guide groove 11 to form a primary guide limit structure to enable the upper sliding seat 30 to slide relatively downward The seat 10 slides along a preset straight line direction; a second oil storage hole 32 communicating with its inner cavity is provided on the lower surface of the upper sliding seat 30, and an oil injection hole 33 communicating with its inner cavity is provided on the side wall of the upper sliding seat 30; there are two sliding friction plates 40, and the two sliding friction plates 40 are fixedly arranged on the lower surface of the upper sliding seat 30 and located on both sides of the sliding guide rail 31; the sliding friction plates 40 are provided with an oil guide hole 41 vertically opposite to the second oil storage hole 32; the two sliding friction plates 40 are in corresponding sliding contact with the two metal slide plates 20. When the temperature of the kiln flue gas treated by the electrostatic precipitator reaches 450°C and the amount of flue gas to be treated is large, the shell of the electrostatic precipitator becomes larger and longer, and the expansion displacement of its distal leg is much greater than 50 mm. A guide slot 11 and a sliding guide rail 31 are arranged between the lower sliding seat 10 and the upper sliding seat 30 to form a primary guide limit structure, which effectively reduces the sliding contact area and reduces the static friction. At the same time, a first oil storage hole 12 and a second oil storage hole 32 are correspondingly opened in the guide slot 11 and on the lower surface of the upper sliding seat 30, and grease is filled into the first oil storage hole 12 and the second oil storage hole 32 through the oil filling hole 33 to ensure sufficient lubrication between the guide slot 11 and the sliding guide rail 31 and between the two sliding friction plates 40 and the two metal slide plates 20, further reducing the static friction, so that the electrostatic precipitator equipment can effectively reduce the lateral thrust and bending moment caused by friction on the shell legs when the shell legs are long and under heavy load, thereby protecting the shell legs. The invention solves the problem in the prior art that the upper and lower parts of the sliding support have a large static friction coefficient or the shell legs are long, resulting in a large bending moment caused by the lateral thrust on the shell legs, which in turn causes the legs to be damaged due to excessive stress.

[0028] In specific implementation, the lower sliding seat 10 and the upper sliding seat 30 are both made of carbon steel, and the two metal slide plates 20 are stainless steel plates. The two sliding friction plates 40 are made of polytetrafluoroethylene composite materials filled with tin bronze powder, and the copper powder filling amount of the composite material is 24%, which can maximize the reduction of friction resistance; the material strength is higher, and the heavy-load static friction coefficient under grease lubrication is 0.01-0.02, which is much lower than the sliding support using ordinary polytetrafluoroethylene material as the friction surface, and is suitable for heavy loads. The lower sliding seat 10 is a rectangular plate structure, and the lower sliding seat 10 is respectively provided with sliding limit ridges 13 parallel to the preset straight line direction on both sides of the width direction, so that the lower sliding seat 10 is a groove plate structure as a whole. The lower sliding seat 10 adopts a rectangular structure in the shape of a groove, and the longer length allows the upper sliding seat 30 to have a larger effective sliding displacement space. The upper sliding seat 30 includes a cylindrical lower sliding body 34 and a rectangular upper sliding body 35. The cylindrical structure of the lower sliding body 34 is conducive to the internal stress dispersion of the heavy-load upper sliding seat 30 itself and avoids stress concentration. Optionally, the cross section of the upper sliding body 35 is a square structure, the lower sliding body 34 and the upper sliding body 35 are integrally formed and the inner cavities are interconnected so that the inner cavities can store grease; the guide slide 11 is opened on the inner surface of the groove of the lower sliding seat 10 and extends along the length direction of the lower sliding seat 10. The guide slide 11 divides the lower sliding seat 10 into two equal parts along the width direction; the sliding guide rail 31, the second oil storage hole 32 and the two sliding friction plates 40 are all arranged on the lower surface of the lower sliding body 34, and the oil filling hole 33 is opened on the side wall of the upper sliding body 35. Optionally, the oil filling hole 33 is blocked by a blocking bolt and opened when oil filling is required. The setting of the oil filling hole 33 can avoid dry friction of the friction surface during long-term operation. Optionally, the cross-section of the sliding guide rail 31 is rectangular, the sliding guide rail 31 and the lower sliding body 34 are integrally formed, and the two sliding friction plates 40 are connected to the lower surface of the lower sliding body 34 by adhesion; the inner side walls of the two sliding limit ridges 13 and the two side walls corresponding to the upper sliding body 35 are in sliding contact to form a secondary guide limit structure. When the primary guide limit structure fails, the secondary guide limit structure can play a role, thereby ensuring that the upper sliding seat 30 slides relative to the lower sliding seat 10 along a preset straight line direction; thereby causing the distal leg of the electrostatic precipitator housing to expand and displace in a predetermined direction.

[0029] Furthermore, there are multiple second oil storage holes 32, one of which is located at the center of the lower sliding body 34, and the remaining multiple second oil storage holes 32 are evenly spaced around the circumference of the lower sliding body 34; optionally, there are four second oil storage holes 32 around the circumference of the lower sliding body 34; the sliding guide rail 31 extends radially along the lower sliding body 34, and an oil guide groove 36 is opened in the middle of the sliding guide rail 31, and the oil guide groove 36 is opposite to the second oil storage hole 32 at the center of the lower sliding body 34 so that the grease in the second oil storage hole 32 at the center of the lower sliding body 34 can flow downward smoothly; there are multiple oil guide holes 41, and the multiple oil guide holes 41 correspond one-to-one to the multiple second oil storage holes 32 arranged around the circumference of the lower sliding body 34. Optionally, there are also four oil guide holes 41. The grease injected through the oil injection hole 33 will flow to each second oil storage hole 32. The grease flowing to the second oil storage hole 32 at the center of the lower sliding body 34 will accumulate in the guide groove 11 and the first oil storage hole 12. When the sliding guide rail 31 slides along the guide groove 11, it will not only apply the grease to the guide groove 11, but also disturb the grease to flow to the sliding friction plate 40, so as to better ensure the grease lubrication of the friction surface. The grease flowing to the multiple second oil storage holes 32 distributed circumferentially in the lower sliding body 34 will flow between the two sliding friction plates 40 and the two metal slide plates 20 through the multiple oil guide holes 41, so as to ensure that the two sliding friction plates 40 and the two metal slide plates 20 are fully lubricated.

[0030] Further, there are two first oil storage holes 12, and the two first oil storage holes 12 are spaced at a preset distance along the extension direction of the guide slide groove 11. When the upper sliding seat 30 is at the initial position, the oil guide slot 36 is opposite to one first oil storage hole 12, and when the upper sliding seat 30 slides to the extreme position, the oil guide slot 36 is opposite to the other first oil storage hole 12. The two first oil storage holes 12 store the grease flowing from the second oil storage hole 32 at the center of the lower sliding body 34. When the sliding guide rail 31 slides in the guide slide groove 11, the grease stored in the two first oil storage holes 12 is continuously brought into various parts of the guide slide groove 11, so that the guide slide groove 11 and the sliding guide rail 31 are fully lubricated. Optionally, when the upper sliding seat 30 is at the initial position or the extreme position, the two first oil storage holes 12 are both located below the lower sliding body 34, thereby preventing the first oil storage holes 12 from being exposed to the air and affecting the grease.

[0031] Furthermore, the two metal slides 20 are both rectangular plates, and the length of each metal slide 20 matches the length of the lower sliding seat 10; one side of each metal slide 20 along the width direction is flush with the upper edge of the guide groove 11, and the other side of each metal slide 20 along the width direction is flush with the side wall of the sliding limit ridge 13, thereby covering the entire upper surface inside the groove of the entire lower sliding seat 10, so that the two sliding friction plates 40 slide correspondingly on the two metal slides 20.

[0032] Furthermore, the bottom surface of the lower sliding body 34 is provided with an annular sealing groove around its circumferential direction, and an annular sliding sealing ring 37 is arranged in the sealing groove, and the bottom edge of the sliding sealing ring 37 is in sliding sealing contact with the upper surface of the two metal slide plates 20; optionally, the cross-sections of the sealing groove and the sliding sealing ring 37 are both rectangular, and when installed, the height of the sliding sealing ring 37 is greater than the distance between the bottom surface of the lower sliding body 34 and the metal slide plate 20, and the sliding sealing ring 37 is deformed after being compressed, thereby effectively sealing the sliding guide rail 31, the second oil storage hole 32 and the two sliding friction plates 40 and other mechanisms, preventing dust and impurities from entering and affecting the performance of the grease. The two sliding friction plates 40 are both semicircular structures, and the arc edges of the two sliding friction plates 40 are flush with the inner side walls of the sliding sealing ring 37; the straight edges of the two sliding friction plates 40 are flush with the two upper edges of the guide slide groove 11; optionally, the sliding sealing ring 37 is an oil-immersed asbestos packing sealing strip ring.

[0033] Furthermore, rubber sealing sheets 38 are respectively provided at the lower ends of the two side walls of the upper sliding body 35 along its sliding direction, and the two side edges of the rubber sealing sheet 38 along the width direction are in sliding sealing contact with the inner walls of the two sliding limit ridges 13, and the lower side edge of the rubber sealing sheet 38 is in sliding sealing contact with the upper surfaces of the two metal slide plates 20, that is, the lower edge of the rubber sealing sheet 38 is at the same height as the friction surface; the lower sliding body 34 is further closed to prevent dust or other impurities from entering, and at the same time, foreign objects such as fallen leaves can be pushed away from the friction surface when the upper sliding seat 30 slides.

[0034] The heavy-load large-displacement sliding support of the electrostatic precipitator of the present invention adopts a rectangular lower sliding seat 10 in the shape of a groove. The longer length allows the upper sliding seat 30 to have a larger effective sliding displacement space. The raised sliding limit ribs 13 on both sides of the lower sliding seat 10 and the guide groove 11 opened in the middle provide a more reliable double guide structure for the upper sliding seat 30. The guide groove 11 in the middle of the lower sliding seat 10 of the present invention and the sliding guide rail 31 of the upper sliding seat 30 are designed with a small gap, which is a primary guide structure. When it is in a lubricated state, the friction is small. The raised sliding limit ribs 13 on both sides of the lower sliding seat 10 are a secondary guide structure, which plays a double insurance role when the primary guide fails.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heavy-load large-displacement sliding support for an electrostatic precipitator, characterized in that: include: A lower sliding seat (10), wherein the upper surface of the lower sliding seat (10) is provided with a guide slot (11) extending along a preset straight line direction, and a first oil storage hole (12) is provided in the guide slot (11); A metal slide plate (20), wherein the metal slide plate (20) is in two pieces, and the two metal slide plates (20) are arranged on the upper surface of the lower sliding seat (10) and are located on both sides of the guide slide groove (11); An upper sliding seat (30), wherein a sliding guide rail (31) matching the guide slot (11) is disposed on the lower surface of the upper sliding seat (30), and the sliding guide rail (31) can be relatively slidably installed in the guide slot (11) to form a primary guide limit structure so that the upper sliding seat (30) can slide relative to the lower sliding seat (10) along the preset straight line direction; a second oil storage hole (32) communicating with the inner cavity of the upper sliding seat (30) is provided on the lower surface of the upper sliding seat (30), and an oil injection hole (33) communicating with the inner cavity of the upper sliding seat (30) is provided on the side wall; A sliding friction plate (40), wherein the sliding friction plate (40) is composed of two pieces, and the two sliding friction plates (40) are fixedly arranged on the lower surface of the upper sliding seat (30) and located on both sides of the sliding guide rail (31); the sliding friction plate (40) is provided with an oil guide hole (41) vertically opposite to the second oil storage hole (32); Wherein, the two sliding friction plates (40) are in corresponding sliding contact with the two metal sliding plates (20).

2. The heavy-load large-displacement sliding support for an electrostatic precipitator according to claim 1 is characterized in that: The lower sliding seat (10) is a rectangular plate structure, and the lower sliding seat (10) is provided with sliding limit ridges (13) parallel to the preset straight line direction on both sides along the width direction thereof; the upper sliding seat (30) comprises a cylindrical lower sliding body (34) and a rectangular upper sliding body (35), and the lower sliding body (34) and the upper sliding body (35) are integrally formed and the inner cavities are interconnected; Wherein, the guide groove (11) extends along the length direction of the lower sliding seat (10) and divides the lower sliding seat (10) into two equal parts along the width direction; the sliding guide rail (31), the second oil storage hole (32) and the two sliding friction plates (40) are all arranged on the lower surface of the lower sliding body (34), and the oil filling hole (33) is opened on the side wall of the upper sliding body (35); the inner side walls of the two sliding limit ridges (13) and the two side walls corresponding to the upper sliding body (35) are slidably abutted to form a secondary guide limit structure for the upper sliding seat (30) so that the upper sliding seat (30) slides relative to the lower sliding seat (10) along the preset straight line direction.

3. The heavy-load large-displacement sliding support for an electrostatic precipitator according to claim 2 is characterized in that: There are a plurality of second oil storage holes (32), one of which is located at the center of the lower sliding body (34), and the remaining plurality of second oil storage holes (32) are evenly spaced around the circumference of the lower sliding body (34); Wherein, the sliding guide rail (31) extends radially along the lower sliding body (34), and an oil guide groove (36) is opened in the middle of the sliding guide rail (31), and the oil guide groove (36) is opposite to the second oil storage hole (32) at the center position of the lower sliding body (34); there are multiple oil guide holes (41), and the multiple oil guide holes (41) correspond one by one to the multiple second oil storage holes (32) arranged circumferentially around the lower sliding body (34).

4. The heavy-load large-displacement sliding support for an electrostatic precipitator according to claim 3 is characterized in that: There are two first oil storage holes (12), and the two first oil storage holes (12) are spaced apart by a preset distance along the extending direction of the guide slide groove (11); When the upper sliding seat (30) is located at the initial position, the oil guide groove (36) is opposite to one of the first oil storage holes (12); when the upper sliding seat (30) slides to the extreme position, the oil guide groove (36) is opposite to another of the first oil storage holes (12).

5. The heavy-load large-displacement sliding support for an electrostatic precipitator according to claim 4, characterized in that: When the upper sliding seat (30) is located at the initial position or the extreme position, the two first oil storage holes (12) are both located below the lower sliding body (34).

6. The heavy-load large-displacement sliding support for an electrostatic precipitator according to claim 2, characterized in that: The two metal slides (20) are both rectangular plates, and the length of each metal slide (20) matches the length of the lower sliding seat (10); one side edge of each metal slide (20) along the width direction is flush with the upper edge of the guide groove (11), and the other side edge of each metal slide (20) along the width direction is flush with the side wall of the sliding limit ridge (13).

7. The heavy-load large-displacement sliding support for an electrostatic precipitator according to claim 2, characterized in that: The bottom surface of the lower sliding body (34) is provided with an annular sealing groove around its circumferential direction, and an annular sliding sealing ring (37) is arranged in the sealing groove. The bottom edge of the sliding sealing ring (37) is in sliding sealing contact with the upper surfaces of the two metal slide plates (20).

8. The heavy-load large-displacement sliding support for an electrostatic precipitator according to claim 7, characterized in that: The two sliding friction plates (40) are both semicircular structures, and the arc edges of the two sliding friction plates (40) are flush with the inner wall of the sliding sealing ring (37); the straight edges of the two sliding friction plates (40) are flush with the two upper edges of the guide groove (11).

9. The heavy-load large-displacement sliding support for an electrostatic precipitator according to claim 2, characterized in that: The upper sliding body (35) is provided with rubber sealing sheets (38) at the lower ends of the two side walls along the sliding direction thereof, and the two side edges of the rubber sealing sheet (38) along the width direction are in sliding sealing contact with the inner side walls of the two sliding limit ridges (13), and the lower side edge of the rubber sealing sheet (38) is in sliding sealing contact with the upper surfaces of the two metal slide plates (20).

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