Novel sliding friction support

Abstract

The utility model discloses a novel sliding friction support, which relates to the technical field of bridge supports and comprises an upper support plate, a rolling steel ball, a spherical crown lining plate, a lower support plate, a shear pin, a spherical stainless steel plate, a rolling shaft sleeve and a positioning pin shaft. Two symmetrical plane stainless steel plates are welded to the two sides of an inner cavity of the upper support plate, a plurality of grooves are formed in the left side and the right side of the top of the lower support plate, positioning pin shafts penetrating through the top of the lower support plate are fixedly installed in the grooves, and the outer walls of the positioning pin shafts are movably sleeved with a plurality of rolling shaft sleeves located in the grooves. Gaps are reserved between the outer wall of the rolling shaft sleeve and the opposite faces of the two plane stainless steel plates. The novel sliding friction support is simple in structure and low in cost, the contact area is reduced, and the rotating friction force is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge bearings, in particular to a novel sliding friction bearing. Background Art

[0002] my country has a complex terrain, numerous roads and bridges, and a large number of bridge bearings are used. Generally, the design life of bridge bearings is several decades. After installation and use, due to long-term exposure to the natural environment and the influence of different climate and environmental factors, the friction pair composed of stainless steel and wear-resistant sliding plates will be polluted and eroded by pests and diseases, which seriously affects the service life of the friction pair, causing functional failure, and the beam body is constrained, resulting in a shortened beam life.

[0003] Bridge bearings are indispensable structures in highway, railway and other buildings. At present, the sliding friction pairs and rotating friction pairs of domestic bridge bearings all adopt the relative movement of stainless steel plates and polytetrafluoroethylene slide plates or modified polytetrafluoroethylene slide plates to achieve the displacement and rotation of the bearings, thereby adapting to the displacement and creep of the bridge, and the sliding and rotating structural forms are single.

[0004] The existing sliding friction bearing has the problems of complex structure and high cost. Utility Model Content

[0005] The utility model provides a novel sliding friction support to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A novel sliding friction bearing comprises an upper bearing plate, a rolling steel ball, a ball crown lining plate, a lower bearing plate, a shear pin, a spherical stainless steel plate, a rolling shaft sleeve and a positioning pin shaft. The lower plane of the upper bearing plate and the mating surface of the ball crown lining plate are both provided with a semicircular rolling steel ball sliding groove. Two symmetrical flat stainless steel plates are welded on both sides of the inner cavity of the upper bearing plate. A plurality of grooves are provided on the left and right sides of the top of the lower bearing plate, and a positioning pin shaft penetrating the top of the lower bearing plate is fixedly installed in the groove. The outer wall of the positioning pin shaft is movably sleeved with a plurality of rolling shaft sleeves located in the groove, and a gap is left between the outer wall of the rolling shaft sleeve and the opposing surfaces of the two flat stainless steel plates.

[0008] Preferably, the sliding groove is treated by nickel-phosphorus plating to improve the hardness of the sliding groove and increase the surface smoothness.

[0009] Preferably, the diameter of the sliding groove matches the rolling steel ball, and the length of the sliding groove satisfies the designed displacement of the support.

[0010] Preferably, the sliding friction pair composed of the rolling sleeve and the flat stainless steel plate realizes the guided sliding of the support.

[0011] Preferably, four shear pins are screwed into the left and right ends of the lower support plate to safely limit the displacement of the support design and to reduce shock.

[0012] Preferably, a plurality of circular grooves are evenly formed on the inner wall of the top of the lower support plate, and a spherical slide plate is fixedly installed in the circular groove.

[0013] Preferably, the spherical sliding plate and the spherical stainless steel plate form a spherical rotating friction pair to realize the rotation of the support.

[0014] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0015] 1. The utility model provides a novel sliding friction bearing with simple structure and low cost.

[0016] 2. The utility model provides a new type of sliding friction support, which reduces the contact area and reduces the rotational friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a bottom view structural diagram of the upper support plate of the utility model;

[0018] Figure 2 It is a schematic diagram of a half-section structure of the utility model viewed from the front;

[0019] Figure 3 It is a schematic diagram of the top view of the lower support plate of the utility model;

[0020] Figure 4 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 5 For this utility model Figure 3 The enlarged structural diagram at B in the middle;

[0022] Figure 6 This is a front view half-section structure schematic diagram of the utility model in which the rolling steel ball is changed into a sliding roller

[0023] Figure 7 The utility model is a side view of a half-section structure in which the rolling steel ball is changed into a sliding roller.

[0024] In the figure: 1. upper support plate; 11. flat stainless steel plate; 2. rolling steel ball; 3. ball crown lining plate; 31. spherical stainless steel plate; 4. lower support plate; 41. spherical slide plate; 42. rolling shaft sleeve; 43. positioning pin shaft; 5. shear pin. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] like Figure 1-Figure 5 As shown, a new type of sliding friction bearing includes an upper bearing plate 1, a rolling steel ball 2, a ball crown lining plate 3, a lower bearing plate 4, a shear pin 5, a spherical stainless steel plate 31, a rolling shaft sleeve 42 and a positioning pin shaft 43. The lower plane of the upper bearing plate 1 and the mating surface of the ball crown lining plate 3 are both provided with semicircular rolling steel ball 2 sliding grooves, two symmetrical flat stainless steel plates 11 are welded on both sides of the inner cavity of the upper bearing plate 1, a plurality of grooves are provided on the left and right sides of the top of the lower bearing plate 4, and a positioning pin shaft 43 that passes through the top of the lower bearing plate 4 is fixedly installed in the groove, and the outer wall of the positioning pin shaft 43 is movably sleeved with a plurality of rolling shaft sleeves 42 located in the groove, and a gap is left between the outer wall of the rolling shaft sleeve 42 and the opposite surfaces of the two flat stainless steel plates 11.

[0027] like Figure 1 and Figure 2 As shown, the sliding groove is plated with nickel-phosphorus to improve the hardness of the sliding groove and increase the surface smoothness.

[0028] like Figure 1 and Figure 2 As shown, the diameter of the sliding groove matches the rolling steel ball 2, and the length of the sliding groove meets the design displacement of the support.

[0029] Realize the horizontal sliding of the support, thereby realizing the displacement of the support and the beam.

[0030] like Figure 2 , Figure 4 and Figure 5 As shown, the sliding friction pair composed of the rolling sleeve 42 and the flat stainless steel plate 11 realizes the guided sliding of the support.

[0031] like Figure 2 and Figure 3 As shown, four shear pins 5 are screwed into the left and right ends of the lower support plate 4 to safely limit the displacement of the support design and reduce vibration.

[0032] like Figure 2 and Figure 3 As shown, the inner wall of the top of the lower support plate 4 is evenly provided with a plurality of circular grooves, and a spherical slide plate 41 is fixedly installed in the circular grooves.

[0033] The material of the spherical slide plate 41 can be selected from slide plate materials such as graphite copper sleeve or polytetrafluoroethylene or modified polytetrafluoroethylene; the graphite copper sleeve has a self-lubricating effect, and the polytetrafluoroethylene or modified polytetrafluoroethylene material needs to be filled with silicone grease in the silicone grease storage pit.

[0034] like Figure 2-Figure 4As shown, the spherical sliding plate 41 and the spherical stainless steel plate 31 form a spherical rotating friction pair to realize the rotation of the support.

[0035] The multiple circular grooves of the lower support plate 4 can realize the rotation of the support on the one hand, and reduce the contact area and the rotation friction on the other hand.

[0036] Working principle of the utility model: the guide sliding friction pair utilizes the relative sliding of the flat stainless steel plate 11 and the spherical slide plate 41 to realize the guide sliding of the bearing; the spherical slide plate 41 has a self-lubricating effect and can effectively reduce the friction. The main working principle of the bearing displacement is that a limited sliding groove is set on the ball crown lining plate 3, and there is a small gap between the rolling steel ball 2 and the sliding groove; when the upper bearing plate 1 moves, the rolling steel ball 2 rolls in the sliding groove, and the relative movement between the upper bearing plate 1 and the rolling steel ball 2 is used to realize the movement of the bearing; the surface of the rolling steel ball 2 is coated with nickel-phosphorus anti-corrosion paint to increase the hardness of the rolling steel ball 2 while improving its surface roughness and reducing friction;

[0037] According to the instruction manual Figure 6 and Figure 7 It can be seen that the rolling steel ball 2 in the present application can be replaced by a sliding roller, and the material of the sliding roller is the same as that of the rolling steel ball 2, but the groove direction of the corresponding sliding groove is different, so as to realize the movement of the upper support plate 1.

[0038] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel sliding friction bearing, comprising an upper bearing plate (1), a rolling steel ball (2), a ball crown lining plate (3), a lower bearing plate (4), a shear pin (5), a spherical stainless steel plate (31), a rolling sleeve (42) and a positioning pin (43), characterized in that: The lower plane of the upper support plate (1) and the butt joint surface of the spherical crown lining plate (3) are both provided with semicircular rolling steel ball (2) sliding grooves, two symmetrical flat stainless steel plates (11) are welded on both sides of the inner cavity of the upper support plate (1), a plurality of grooves are provided on the left and right sides of the top of the lower support plate (4), and a positioning pin shaft (43) penetrating the top of the lower support plate (4) is fixedly installed in the groove, and the outer wall of the positioning pin shaft (43) is movably sleeved with a plurality of rolling sleeves (42) located in the groove, and a gap is left between the outer wall of the rolling sleeve (42) and the opposite surface of the two flat stainless steel plates (11).

2. A novel sliding friction bearing according to claim 1, characterized in that: The sliding groove is treated by nickel-phosphorus plating to improve the hardness of the sliding groove and increase the smoothness of the surface.

3. The novel sliding friction bearing according to claim 1 is characterized in that: The diameter of the sliding groove matches the rolling steel ball (2), and the length of the sliding groove satisfies the designed displacement of the support.

4. The novel sliding friction bearing according to claim 1 is characterized in that: The sliding friction pair formed by the rolling sleeve (42) and the flat stainless steel plate (11) realizes the guided sliding of the support.

5. The novel sliding friction bearing according to claim 1 is characterized in that: Four shear pins (5) are screwed into the left and right ends of the lower support plate (4) to safely limit the displacement of the support design and reduce shock.

6. The novel sliding friction bearing according to claim 1 is characterized in that: The inner wall of the top of the lower support plate (4) is evenly provided with a plurality of circular grooves, and a spherical slide plate (41) is fixedly installed in the circular grooves.

7. A novel sliding friction bearing according to claim 6, characterized in that: The spherical sliding plate (41) and the spherical stainless steel plate (31) form a spherical rotating friction pair to realize the rotation of the support.

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