Basin type rubber support capable of supplementing silicone grease and maintenance method thereof

Abstract

The invention discloses a basin type rubber support capable of supplementing silicone grease, belongs to the technical field of bridge supporting, and solves the problem that grease of an existing support is difficult to replace. The support comprises a support top plate, a middle steel lining plate, a support bottom plate, an upper sliding plate and a lower sliding plate, the top surface of the lower sliding plate is provided with at least two grease channels, each grease channel comprises a grease injection through hole, an annular grease injection channel and a grease escape channel which are communicated in sequence, each grease injection channel comprises a radial grease injection channel and a vertical grease injection channel which are communicated with each other, and the radial grease injection channel extends to the outer wall of the middle steel lining plate; the position of the vertical grease injection channel corresponding to each grease injection channel corresponds to the position of the grease through hole corresponding to each grease channel, and the vertical grease injection channels and the grease through holes are communicated. The invention further provides a maintenance method of the basin type rubber support capable of supplementing silicone grease. According to the basin type rubber support, silicone grease can be conveniently supplemented to the sliding face from the outside under the condition that the support is not detached, and therefore low consumption, long service life and low maintenance cost are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge support, more particularly, it relates to a basin type rubber support capable of supplementing silicone grease and a maintenance method thereof. BACKGROUND

[0002] The basin type rubber support is widely used in large-span bridges and building structures due to its large bearing capacity, large horizontal displacement and flexible rotation. The core sliding part of the basin type rubber support is composed of a friction pair of a support top plate and a middle steel lining plate, and 5201-2 silicone grease is filled between the two as a lubricant to reduce the friction coefficient and ensure the normal sliding and rotation of the support.

[0003] However, the traditional basin type rubber support has a significant defect: during long-term use, the silicone grease will gradually be depleted due to aging, pollution, wear and loss, resulting in a sharp increase in the friction coefficient of the sliding surface. This not only affects the normal use performance of the support, but also may cause changes in the stress state of the structure, and even cause the support to be stuck, causing safety hazards. At present, it is extremely difficult to maintain the support with depleted silicone grease, and usually it is necessary to lift the bridge, remove the support and replace it on a large scale. This process is time-consuming and labor-intensive, costly and has a huge impact on traffic.

[0004] Therefore, it is urgent to design a basin type rubber support capable of supplementing silicone grease and a maintenance method thereof to solve the above problems. SUMMARY

[0005] The technical problem to be solved by the present application is to solve the above-mentioned deficiencies of the prior art. The purpose of the present application is to provide a basin type rubber support capable of supplementing silicone grease, which can conveniently supplement silicone grease to the sliding surface from the outside without disassembling the support, thereby realizing low consumption, long service life and low maintenance cost.

[0006] The second purpose of the present application is to provide a maintenance method for the basin type rubber support capable of supplementing silicone grease, which effectively improves the construction efficiency.

[0007] In order to achieve the above object, the application provides a basin type rubber support capable of supplementing silicon grease, which comprises a support top plate, a middle steel lining plate and a support bottom plate, the middle steel lining plate is installed in the support bottom plate, further comprises an upper sliding plate and a lower sliding plate, the upper sliding plate is fixed at the bottom of the support top plate, the lower sliding plate is fixed in a circular groove at the top of the middle steel lining plate, and the upper sliding plate is attached to the top of the lower sliding plate to form a planar sliding pair; at least two grease channels are formed on the top surface of the lower sliding plate, the grease channels comprise grease injection holes, annular grease injection channels and grease escape channels which are sequentially connected, the grease injection holes vertically penetrate the lower sliding plate, the grease escape channels extend to the outer wall of the lower sliding plate, the middle steel lining plate is provided with oil injection channels which are consistent with the number of the grease channels, the oil injection channels comprise radial grease injection channels and vertical grease injection channels which are connected with each other, the radial grease injection channels extend to the outer wall of the middle steel lining plate, the position of the vertical grease injection channel corresponding to each oil injection channel corresponds to the position of the grease injection hole corresponding to each grease channel, and they are connected with each other.

[0008] As a further improvement, the radial grease injection channel is threadedly connected with a plugging bolt at the end away from the vertical grease injection channel.

[0009] Further, a plurality of oil storage grooves are formed on the top surface of the lower sliding plate, and the grease channels and the oil storage grooves are arranged in a staggered manner.

[0010] Further, the cross section of the annular grease injection channel is arc-shaped, and the maximum width of the annular grease injection channel is greater than the maximum width of the oil storage groove.

[0011] Further, the upper sliding plate is a stainless steel sliding plate, the lower sliding plate is a sliding plate made of modified ultra-high molecular weight polyethylene wear-resistant material, the upper sliding plate is fixed at the bottom of the support top plate by welding, and the lower sliding plate is fixed in the circular groove of the middle steel lining plate by adhesive bonding.

[0012] Further, the top surface of the lower sliding plate protrudes above the middle steel lining plate, and the distance from the top surface of the lower sliding plate to the top surface of the middle steel lining plate is greater than or equal to half the thickness of the lower sliding plate.

[0013] Further, the grease escape channels corresponding to the grease channels are uniformly distributed along the circumference of the lower sliding plate.

[0014] Further, the support bottom plate is a groove type bottom plate, the middle steel lining plate is installed in the support bottom plate, and a pressure bearing rubber plate is arranged between the middle steel lining plate and the support bottom plate.

[0015] Further, a flange is arranged at the outer edge of the bottom of the middle steel lining plate, a sealing ring is arranged at the outer edge of the top of the pressure bearing rubber plate, and the flange is attached to the sealing ring.

[0016] A maintenance method of a basin rubber support capable of supplementing silicone grease, the maintenance method comprising the following steps: S1, disassemble the plugging bolt, and install the quick connector at the radial grease injection channel; S2, connect the external connecting hose or hard pipe of the high-pressure filling equipment to the quick connector, and ensure that the connection is tight and has no risk of leakage; S3, check the grease storage pump of the high-pressure filling equipment, and ensure that there is sufficient and qualified fresh silicone grease; S4, start the high-pressure filling equipment, and begin to pressurize the silicone grease into the support; S5, observe the flow meter on the high-pressure filling equipment, and record the total amount of injected silicone grease, which should be consistent with the theoretical supplement amount; S6, observe the grease escape port of the grease escape channel corresponding to the lower slide plate; S7, once fresh silicone grease is observed to escape from the grease escape port and the predetermined amount of injected grease is reached, immediately stop the grease injection machine; S8, slowly remove the quick connector; S9, quickly wipe the radial grease injection channel with a clean cloth to remove the residual silicone grease, re-tighten the plugging bolt 11, and close the channel; S10, clean the work site, restore the appearance of the support, and remove all tools and equipment Beneficial effects Compared with the prior art, the present application has the advantages that: The support of the present application has the advantages that: when the grease needs to be replaced, the high-pressure filling equipment is connected to the radial grease injection channel of the oil injection channel in the lower slide plate and the oil injection channel in the middle steel lining plate, the silicone grease is injected into the radial grease injection channel, and then enters the annular grease injection channel through the vertical grease injection channel and the oil injection hole. As the amount of injected silicone grease increases, the old silicone grease in the pipeline is pushed out of the grease escape channel by the injected fresh silicone grease. During the filling process, the color change of the silicone grease can be observed through the outlet of the grease escape channel. When the silicone grease changes from dark yellow or black dirt to fresh silicone grease in the form of milky white or light gray translucent grease, it can be determined that the silicone grease supplement is complete. The injected new grease flows through the relative sliding between the upper slide plate and the lower slide plate under the action of the bridge load, thereby realizing the lubrication supplement, old grease replacement and interface cleaning of the sliding friction pair, and finally restoring the initial low-friction performance of the support. During the whole process, the bridge does not need to be pre-jacked in other ways, the silicone grease can be conveniently supplemented from the outside without disassembling the support, thereby realizing low consumption, long service life and low maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a front view structural schematic diagram of the present application; Figure 2 is Figure 1Structure enlarged schematic view at middle A; Figure 3 Top view structure schematic view for removing support top plate and upper slide plate in the present application; Figure 4 Front view structure schematic view for construction of the present application.

[0018] Wherein: 1-support top plate, 2-middle steel lining plate, 3-support bottom plate, 4-upper slide plate, 5-lower slide plate, 6-grease injection through hole, 7-annular grease injection channel, 8-grease escape channel, 9-radial grease injection channel, 10-vertical grease injection channel, 11-plugging bolt, 12-oil storage tank, 13-pressure bearing rubber plate, 14-flange, 15-sealing ring, 16-quick connector, 17-high pressure filling equipment. DETAILED DESCRIPTION

[0019] The present application is further explained in conjunction with specific embodiments in the accompanying drawings.

[0020] Reference Figures 1-4The application discloses a basin type rubber support capable of supplementing silicon grease, which comprises a support top plate 1, a middle steel lining plate 2 and a support bottom plate 3, wherein the middle steel lining plate 2 is arranged in the support bottom plate 3, the support further comprises an upper sliding plate 4 and a lower sliding plate 5, the upper sliding plate 4 is fixed at the bottom of the support top plate 1, the lower sliding plate 5 is fixed in a circular groove at the top of the middle steel lining plate 2, the upper sliding plate 4 is attached to the top of the lower sliding plate 5 to form a planar sliding pair, the need of displacement amount of the beam body when the beam body expands or shrinks due to heat or cold can be met, meanwhile, the sliding friction pair formed by the cooperation of the upper sliding plate 4 and the lower sliding plate 5 can slow down the damage of the support top plate 1. At least two grease channels are formed in the top surface of the lower sliding plate 5, the grease channels are not communicated with each other and are independent grease channels, the grease channel comprises an injection grease through hole 6, an annular injection grease channel 7 and an escape grease channel 8 which are sequentially communicated, the injection grease through hole 6 vertically penetrates the lower sliding plate 5, silicon grease is injected from the lower side, the operation of injecting the silicon grease from the narrow space is avoided, the construction is more convenient, the escape grease channel 8 extends to the outer wall of the lower sliding plate 5, and whether the silicon grease escapes can be observed conveniently. In the embodiment, the grease channel adopts the mode that the end penetrates to the outer wall of the lower sliding plate 5, the silicon grease flows smoothly and escapes from the escape grease channel 8 smoothly, compared with the mode that the silicon grease escapes from the surrounding of the lower sliding plate 5, the silicon grease loss can be greatly reduced, the workload of wiping the silicon grease in the future can be reduced, and the construction efficiency is greatly improved. An oil injection channel which is consistent with the number of the grease channels is formed in the middle steel lining plate 2, the oil injection channels are not communicated with each other, the oil injection channel and the grease channel are one-to-one corresponding, the oil injection channel comprises a radial injection grease channel 9 and a vertical injection grease channel 10 which are communicated with each other, the radial injection grease channel 9 extends to the outer wall of the middle steel lining plate 2, the oil is injected from the outer side of the middle steel lining plate 2, the construction is more convenient, the position of the vertical injection grease channel 10 corresponding to each oil injection channel is corresponding to the position of the injection grease through hole 6 corresponding to each grease channel, and the two are communicated, the silicon grease is guided to the grease channel.

[0021] Preferably, a plugging bolt 11 is threadedly connected to the end of the radial injection grease channel 9 away from the vertical injection grease channel 10, so as to prevent the silicon grease from escaping from the radial injection grease channel 9 and facilitate the dismounting.

[0022] Preferably, a plurality of oil storage grooves 12 are further formed in the top surface of the lower sliding plate 5, the grease channels and the oil storage grooves 12 are arranged in a staggered mode, so as to avoid the interference problem. During the operation of the support, the upper sliding plate 4 and the lower sliding plate 5 can horizontally slide under the load of the bridge, so as to bring the silicon grease in the annular injection grease channel 7 to the oil storage grooves 12 and play a certain storage role.

[0023] Preferably, the cross section of the annular injection grease channel 7 is arc-shaped, and is further semi-circular, so as to be convenient for processing and have a larger volume, to ensure the smoothness of the silicon grease flow, and the maximum width of the annular injection grease channel 7 is greater than the maximum width of the oil storage groove 12, so that the annular injection grease channel 7 can store more silicon grease.

[0024] Preferably, the upper slide plate 4 is a stainless steel slide plate, and the lower slide plate 5 is a modified ultra-high molecular weight polyethylene wear-resistant material slide plate. Using stainless steel slide plate and modified ultra-high molecular weight polyethylene wear-resistant material slide plate as sliding friction materials makes sliding smoother and extends service life.

[0025] Preferably, the upper sliding plate 4 is fixed to the bottom of the support top plate 1 by welding, and the lower sliding plate 5 is fixed to the circular groove of the intermediate steel liner plate 2 by adhesive bonding, so as to ensure the stability of the upper sliding plate 4 and the lower sliding plate 5.

[0026] Preferably, the top surface of the lower slide plate 5 protrudes above the intermediate steel liner plate 2 to prevent the upper slide plate 4 from contacting the intermediate liner plate 2, and the distance between the top surface of the lower slide plate 5 and the top surface of the intermediate steel liner plate 2 is greater than or equal to half the thickness of the lower slide plate 5 to further prevent the upper slide plate 4 from contacting the intermediate liner plate 2.

[0027] Preferably, the grease escape channels 8 corresponding to the grease channels are evenly distributed along the circumference of the lower slide plate 5. The grease escape channels 8 are dispersed on the outer periphery of the lower slide plate 5, so that it is easy to see whether the grease has escaped from all directions.

[0028] Preferably, the bearing base plate 3 is a trough-type base plate, wherein the intermediate steel liner plate 2 is installed inside the bearing base plate 3, and a pressure-bearing rubber plate 13 is provided between the intermediate steel liner plate 2 and the bearing base plate 3. The intermediate steel liner plate 2 contacts the end face of the pressure-bearing rubber plate 13, transferring the upper load to the pressure-bearing rubber plate 5. The pressure-bearing rubber plate 13, which is enclosed in a steel basin, has the characteristic of fluid volume incompressibility under triaxial stress, reliably transferring the reaction force of the bridge superstructure to the pier and realizing the rotation of the bridge beam end.

[0029] Preferably, a flange 14 is provided at the bottom outer edge of the intermediate steel liner 2, and a sealing ring 15 is provided at the top outer edge of the pressure-bearing rubber plate 13. The sealing ring 15 is a brass sealing ring, and the flange 14 is attached to the sealing ring 15. The flange 14 contacts the sealing ring 15, and the transition through the sealing ring 15 solves the problem of edge stress concentration.

[0030] The support of the present invention, when replacing the silicone grease, has the following steps: S1. Remove the sealing bolt 11 and install the quick connector 16 into the radial grease injection channel 9; S2. Connect the external connecting hose or rigid pipe of the high-pressure filling equipment 17 to the quick connector 16, ensuring a tight connection and no risk of leakage; S3. Check the grease pump of the high-pressure filling equipment 17 to ensure that there is sufficient quantity of qualified fresh silicone grease. S4. Start the high-pressure injection device 17 and begin injecting silicone grease into the support; S5. Observe the flow meter on the high-pressure filling device 17 and record the total amount of silicone grease injected. This total amount should be consistent with the theoretical replenishment amount (grease reservoir volume + sliding surface gap volume + expected loss). S6. Observe the grease outlet of the grease channel 8 corresponding to the slide plate 5; S7. Once fresh silicone grease is observed to escape from the grease outlet and the predetermined amount of grease is reached, stop the grease injection machine immediately. S8. Slowly remove quick connector 16; S9. Quickly wipe away any residual silicone grease from the radial grease injection channel 9 with a clean cloth, and re-tighten the sealing bolt 11 to seal the channel; S10. Clean up the work site, restore the appearance of the support, and remove all tools and equipment.

[0031] The support of this invention has a grease channel in the lower slide plate 5 and an oil injection channel in the intermediate steel liner plate 2. When the grease needs to be replaced, the high-pressure injection device 17 is connected to the radial grease injection channel 9 of the oil injection channel. The silicone grease is injected into the radial grease injection channel 9, and then enters the annular grease injection channel 7 through the vertical grease injection channel 10 and the oil injection through hole 6. As the amount of silicone grease injected increases, the old silicone grease in the original pipeline is pushed out from the grease escape channel 8 by the injected new silicone grease. During the injection process, the color change of the silicone grease can be observed through the outlet of the grease escape channel 8. When the silicone grease changes from dark yellow or black turbidity to the milky white or light gray translucent grease of fresh silicone grease, it can be judged that the silicone grease replenishment is complete. After injection, the new grease flows under the bridge load through the relative sliding between the upper sliding plate 4 and the lower sliding plate 5, thereby achieving lubrication replenishment, old grease replacement and interface cleaning of the sliding friction pair, and finally restoring the initial low friction performance of the bearing. The entire process does not require the bridge to be pre-lifted by other means. Silicon grease can be conveniently replenished to the sliding surface from the outside without disassembling the bearing, thus achieving low consumption, long service life and low maintenance cost.

[0032] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention, and these will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A pot-type rubber bearing with refillable silicone grease, comprising a bearing top plate (1), an intermediate steel liner plate (2), and a bearing bottom plate (3), wherein the intermediate steel liner plate (2) is installed inside the bearing bottom plate (3), characterized in that, It also includes an upper sliding plate (4) and a lower sliding plate (5). The upper sliding plate (4) is fixed to the bottom of the support top plate (1), and the lower sliding plate (5) is fixed in the circular groove at the top of the intermediate steel liner (2). The upper sliding plate (4) fits against the top of the lower sliding plate (5) to form a planar sliding pair. At least two grease channels are opened on the top surface of the lower sliding plate (5). The grease channels include a grease injection hole (6), an annular grease injection channel (7), and a grease escape channel (8) connected in sequence. The grease injection hole (6) is vertically penetrating through the plate. The lower slide plate (5) has an grease channel (8) extending to the outer wall of the lower slide plate (5). The middle steel liner (2) has an oil injection channel with the same number of grease channels. The oil injection channel includes a radial grease injection channel (9) and a vertical grease injection channel (10) that are interconnected. The radial grease injection channel (9) extends to the outer wall of the middle steel liner (2). The position of the vertical grease injection channel (10) corresponding to each oil injection channel corresponds to the position of the grease through hole (6) corresponding to each grease channel, and the two are connected.

2. A pot-type rubber bearing with refillable silicone grease according to claim 1, characterized in that, The radial grease injection channel (9) is threaded with a sealing bolt (11) at one end away from the vertical grease injection channel (10).

3. A pot-type rubber bearing with refillable silicone grease according to claim 1, characterized in that, The top surface of the sliding plate (5) is also provided with multiple oil storage tanks (12), and the grease channel and the oil storage tanks (12) are arranged in a staggered manner.

4. A pot-type rubber bearing with refillable silicone grease according to claim 3, characterized in that, The cross-section of the annular grease injection channel (7) is arc-shaped, and the maximum width of the annular grease injection channel (7) is greater than the maximum width of the oil reservoir (12).

5. A pot-type rubber bearing with refillable silicone grease according to claim 1, characterized in that, The upper slide plate (4) is a stainless steel slide plate, and the lower slide plate (5) is a modified ultra-high molecular weight polyethylene wear-resistant material slide plate. The upper slide plate (4) is fixed to the bottom of the support top plate (1) by welding, and the lower slide plate (5) is fixed to the circular groove of the middle steel liner plate (2) by adhesive bonding.

6. A pot-type rubber bearing with refillable silicone grease according to claim 1, characterized in that, The top surface of the lower slide plate (5) protrudes above the middle steel liner plate (2), and the distance from the top surface of the lower slide plate (5) to the top surface of the middle steel liner plate (2) is greater than or equal to half the thickness of the lower slide plate (5).

7. A pot-type rubber bearing with refillable silicone grease according to claim 1, characterized in that, The grease escape channels (8) corresponding to the grease channels are evenly distributed along the circumference of the lower slide plate (5).

8. A pot-type rubber bearing with refillable silicone grease according to any one of claims 1-7, characterized in that, The support base plate (3) is a trough-type base plate, the intermediate steel liner plate (2) is installed inside the support base plate (3), and a pressure-bearing rubber plate (13) is provided between the intermediate steel liner plate (2) and the support base plate (3).

9. A pot-type rubber bearing with refillable silicone grease according to claim 8, characterized in that, The bottom outer edge of the intermediate steel liner (2) is provided with a flange (14), and the top outer edge of the pressure-bearing rubber plate (13) is provided with a sealing ring (15). The flange (14) is attached to the sealing ring (15).

10. A maintenance method for the pot bearing according to claim 2, characterized in that, The maintenance method includes the following steps: S1. Remove the sealing bolt (11) and install the quick connector (16) into the radial grease injection channel (9); S2. Connect the external connecting hose or rigid pipe of the high-pressure filling equipment (17) to the quick connector (16) to ensure a tight connection and no risk of leakage. S3. Check the grease pump of the high-pressure filling equipment (17) to ensure that there is sufficient and qualified fresh silicone grease; S4. Start the high-pressure injection equipment (17) and begin injecting silicone grease into the support; S5. Observe the flow meter on the high-pressure filling equipment (17) and record the total amount of silicone grease injected. This total amount should match the theoretical replenishment amount. S6. Observe the grease outlet of the grease channel (8) corresponding to the slide plate (5); S7. Once fresh silicone grease is observed to escape from the grease outlet and the predetermined amount of grease is reached, stop the grease injection machine immediately. S8. Slowly remove the quick connector (16). S9. Quickly wipe away any residual silicone grease in the radial grease injection channel (9) with a clean cloth, and re-tighten the sealing bolt (11) to seal the channel; S10. Clean up the work site, restore the appearance of the support, and remove all tools and equipment.

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