CN116124469A

CN116124469A - Plane supporting device

Info

Publication number: CN116124469A
Application number: CN202211516910.6A
Authority: CN
Inventors: 邱红友; 龚杰; 何瑞; 肖成诚; 陈兰; 杨鑫; 蒋晓林; 王琳
Original assignee: China Automotive Engineering Research Institute Co Ltd
Current assignee: China Automotive Engineering Research Institute Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-05-16

Abstract

The invention relates to the field of flat belt type dynamometers and discloses a plane supporting device which comprises a supporting mechanism, wherein the supporting mechanism comprises a base and a supporting plate above the base, a first water inlet is formed in the base, a dynamic pressure unit is arranged on the supporting plate and comprises dynamic pressure grooves and dynamic pressure strips, the dynamic pressure grooves and the dynamic pressure strips are arranged at intervals, and the first water inlet is communicated with the dynamic pressure grooves. The invention aims to provide a plane supporting device which provides enough bearing capacity for a steel belt.

Description

Plane supporting device

Technical Field

The invention relates to the field of flat belt type dynamometers, in particular to a plane supporting device.

Background

In an automobile experiment, limited by a field, four wheels of an automobile are usually required to be respectively placed on four flat belt type dynamometers to simulate road resistance, each flat belt type dynamometer comprises two rollers, a steel belt is sleeved on each roller, the wheels are supported on the steel belt, the steel belt is insufficient to bear the load of the wheels, an additional supporting system is required to be arranged between the contact area of the wheels and the steel belt, namely, the two rollers to support the steel belt, and the friction force between the supporting system and the steel belt is required to be as small as possible so as not to influence the rollers to drive the steel belt to rotate.

Prior art support systems include air bearings and water bearings. The bearing capacity of the existing air bearing is insufficient for a slightly heavier vehicle, and in order to ensure high bearing capacity, the air pressure is about 3Mpa, and a transmission medium is made of a porous material, so that development of a new material is required, and the cost is high; the hydraulic bearing is also limited by materials, and has the problem of insufficient bearing capacity.

Disclosure of Invention

The invention aims to provide a plane supporting device which provides enough bearing capacity for a steel belt.

In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a plane strutting arrangement, includes supporting mechanism, and supporting mechanism includes the backup pad of base and base top, is equipped with first water inlet on the base, is equipped with dynamic pressure unit in the backup pad, and dynamic pressure unit includes dynamic pressure groove and dynamic pressure strip, and dynamic pressure groove and dynamic pressure strip interval set up, and first water inlet and dynamic pressure groove intercommunication.

The beneficial effect of this scheme is:

1. water flows into the dynamic pressure groove through the first water inlet, when the steel belt rotates, water in the dynamic pressure groove is driven to flow onto the pressing strip, dynamic pressure effect is generated, the pressing strip and the dynamic pressure groove form high-low difference, and then water generates upward dynamic pressure on the steel belt, and compared with the supporting force formed by only upward water pressure spraying, the steel belt has the advantages that the pressure is transmitted to the supporting plate through the water, and the supporting effect is better.

2. The water on the dynamic pressure bar can provide dynamic pressure for the steel belt, the supporting area is large, the pressure intensity in unit area is small, and the requirement on the material intensity of the supporting plate is low.

3. The larger the pressure born by the steel belt, the smaller the gap between the steel belt and the supporting plate, the smaller the cross section of water flow, the larger the generated pressure, the larger the generated dynamic pressure, and further, when the local pressure of the steel belt is overlarge, the additional local supporting force is provided for the steel belt.

Preferably, as an improvement, the supporting plate is further provided with a plurality of throttle bolts, the throttle bolts are arranged in a matrix, a row of throttle bolts are arranged in one dynamic pressure groove, the throttle bolts are provided with vertically through water spraying ports, and the water spraying ports are communicated with the first water inlet. The water flow can be sprayed out from the water spraying port, so that supporting force is formed on the lower surface of the steel belt, and compared with a water inlet with a larger size, the water spraying port is small in aperture and large in water pressure; when the local pressure of the steel belt is overlarge, the smaller the gap between the steel belt and the supporting plate is, the smaller the cross section of water flow is, the water pressure of the water spray opening can prevent the water in the dynamic pressure groove from flowing back, so that the dynamic pressure of the water is increased, and additional local supporting force is provided for the steel belt.

Preferably, as an improvement, the supporting mechanism further comprises an intermediate baffle plate, the intermediate baffle plate comprises a second water inlet and a water guide channel, the water guide channel comprises a main channel, a plurality of secondary channels and a plurality of vertical first bolt holes, the main channel is parallel to the width direction of the steel strip, the secondary channels are perpendicular to the main channel, and the first water inlet, the second water inlet, the main channel, the secondary channels, the first bolt holes and the water spraying openings are sequentially communicated. So set up, rivers fill up main passageway and secondary channel, follow the water jet blowout again, and then guarantee that each water jet water pressure is close, and then guarantee that rivers provide even holding power for the steel band, and then guarantee the roughness of steel band, and then prevent that the wheel from taking place the skew in the automobile experiment from influencing experimental data.

Preferably, as an improvement, the device further comprises an internal circulation mechanism, wherein the internal circulation mechanism comprises a first circulation unit, a second circulation unit and a third circulation unit, the base and the middle partition plate are enclosed to form a cavity, and the first circulation unit, the second circulation unit and the third circulation unit can guide water flow between the supporting plate and the steel belt to return to the cavity. The arrangement forms water flow circulation, and prevents water flow from flowing into other mechanical structures to influence the operation of the other mechanical structures; prevent that the temperature from too high reduces the durability of backup pad and steel band, derive the rivers and cool down.

Preferably, as an improvement, the water tank further comprises an external circulation mechanism, wherein the external circulation mechanism comprises a water tank and a water pump in the water tank, a water outlet is arranged at the bottom of the cavity, the water outlet is communicated with the water tank, and the water pump is communicated with the first water inlet. So arranged, a water circulation is formed between the water tank and the base; the water flow is led into the water tank outside the base so as to cool the water flow.

Preferably, as an improvement, the first circulation unit is arranged on the middle partition plate, the first circulation unit comprises two first sealing parts and a plurality of first circulation holes, a support groove is arranged on the middle partition plate, the support plate is accommodated in the support groove, a circulation groove is formed between the support plate and the support groove, and the plurality of first circulation holes are arranged at the bottom of the circulation groove; the first sealing part comprises a first sealing groove, a first elastic piece and sealing strips, wherein the two first sealing grooves are respectively arranged outside the supporting groove and close to two sides of the roller, the first elastic piece is arranged in the first sealing groove, the sealing strips are arranged on the first elastic piece, and the sealing strips can be abutted against the steel strips by the first elastic piece. So set up, the sealing strip supports tightly the steel band, and when the steel band of plane strutting arrangement top rotated, the sealing strip homoenergetic was with the water barrier of attaching on the steel band, and then made water flow back to the cavity from first circulation hole.

Preferably, as an improvement, the second circulation unit is arranged on the middle partition plate, the second circulation unit comprises a second sealing part and a second circulation hole, the second sealing part comprises a second sealing groove, a second elastic piece and a sealing ring, the second sealing groove is arranged outside the supporting groove in a circumferential direction, the second elastic piece is arranged in the second sealing groove, the sealing ring is arranged on the second elastic piece, the second elastic piece enables the sealing ring to abut against the steel belt, and the second circulation hole is arranged between the second sealing groove and the supporting groove. So set up, the sealing ring supports tightly the steel band, and the water that is not blocked by the sealing strip is blocked by the sealing ring, flows back to the cavity from the second circulation hole.

Preferably, as an improvement, the third circulation unit is arranged on the side surface of the middle partition plate, the third circulation unit comprises a plurality of air knives and a plurality of connecting pieces between the air knives, the middle partition plate is enclosed by the air knives, gaps are reserved between the air knives and the middle partition plate, an air inlet is formed in the base, a first air guide channel is formed in the connecting piece, a second air guide channel is formed in the air knives, and the air inlet, the first air guide channel and the second air guide channel are sequentially communicated. The water which is not blocked by the sealing ring is blown back by the air knife and flows back to the cavity from the gap between the air knife and the middle partition plate.

Drawings

FIG. 1 is a three-dimensional isometric view of a belt dynamometer;

FIG. 2 is a front view of the flat belt dynamometer housing with the housing removed;

FIG. 3 is a three-dimensional isometric view of an embodiment;

fig. 4 is a cross-sectional view of an embodiment.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the flat belt type dynamometer casing 1, the flat supporting device body 2, the base 210, the supporting table 211, the first valve block 212, the middle partition plate 220, the second valve block 221, the second water inlet 222, the supporting groove 223, the main channel 224, the secondary channel 225, the supporting plate 230, the dynamic pressure groove 231, the dynamic pressure bar 232, the throttle bolt 233, the water jet 234, the sealing strip 241, the first elastic piece 242, the sealing ring 243, the second elastic piece 244, the air knife 245, the second air guide channel 246, the connecting piece 247, the second circulation hole 248, the hose 250, the roller 3, the wheel 4 and the steel belt 5.

Examples

The embodiment is basically as shown in fig. 1-4, and the planar supporting device body 2 as shown in fig. 1 is applied to the belt type dynamometer as shown in fig. 1, and comprises the planar supporting device body 2, wherein the planar supporting device body 2 comprises

Comprising a support mechanism, an inner circulation mechanism and an outer circulation mechanism, the support mechanism as shown in fig. 4 comprises a base 210, an intermediate partition 220 and a support plate 230.

The base 210 is bolted onto the flat belt type dynamometer casing 1, as shown in fig. 2-4, the base 210 is a container with an inverted trapezoid cross section and an opening at the upper side, as shown in fig. 4, a supporting table 211 is welded at the bottom of the base 210, a first valve block 212 is bolted onto the bottom of the base 210, a first water inlet, a water outlet and an air inlet (not shown in the figure) are formed at the bottom of the base 210, the first valve block 212 is communicated with the first water inlet, and fixing seats (not shown in the figure) are welded on the front side wall and the rear side wall of the base 210 respectively.

As shown in fig. 4, the middle partition 220 is bolted onto the supporting table 211, a supporting groove 223 is formed on the upper side of the middle partition 220, a second valve block 221 is bolted onto the lower side of the middle partition 220, a second water inlet 222 is formed on the lower side of the middle partition 220, a water guide channel is formed in the middle partition 220, the water guide channel comprises a main channel 224, a plurality of secondary channels 225 and a plurality of vertical first bolt holes, the main channel 224 is perpendicular to the rotation direction of the steel belt 5, the secondary channels 225 are perpendicular to the main channel 224, and the first bolt holes penetrate through the secondary channels 225 and the upper surface of the middle partition 220.

The supporting plate 230 is arranged in the supporting groove 223, a dynamic pressure unit is arranged on the supporting plate 230, the dynamic pressure unit comprises a plurality of dynamic pressure grooves 231, dynamic pressure strips 232 and throttle bolts 233, the dynamic pressure grooves 231 are formed in the supporting plate 230, the dynamic pressure strips 232 are formed by the supporting plate 230 between the dynamic pressure grooves 231 and are arranged at intervals, the dynamic pressure strips 232 and the dynamic pressure strips 231 form a height difference, when the steel belt 5 drives water in the dynamic pressure grooves 231 to flow onto the dynamic pressure strips 232, the water flow section is reduced, the water pressure is increased, and then dynamic pressure effect is generated, so that larger supporting force is generated on the steel belt 5; the bottom of the dynamic pressure groove 231 is provided with a plurality of second bolt holes, the throttling bolts 233 are connected with the middle partition plate 220 and the supporting plate 230 through the first bolt holes and the second bolt holes, the throttling bolts 233 are arranged in a matrix, a row of throttling bolts 233 are arranged in one dynamic pressure groove 231, the throttling bolts 233 are provided with vertically through water spray openings 234, and the first water inlet, the first valve block 212, the second valve block 221, the second water inlet 222, the main channel 224, the secondary channel 225, the first bolt holes and the water spray openings 234 are sequentially communicated.

The internal circulation mechanism comprises an air compressor, a first circulation unit, a second circulation unit and a third circulation unit, the air compressor is communicated with the air inlet, the base 210 and the middle partition plate 220 enclose to form a cavity, and the first circulation unit, the second circulation unit and the third circulation unit can guide water flow between the support plate 230 and the steel belt 5 to return to the cavity.

The first circulation unit includes two first sealing parts and a plurality of first circulation holes, a circulation groove is formed between the support plate 230 and the support groove 223, and the plurality of first circulation holes are opened at the bottom of the circulation groove; the first sealing part comprises a first sealing groove, a first elastic piece 242 and a sealing strip 241, wherein the two first sealing grooves are respectively formed in the left side and the right side of the supporting groove 223, the first elastic piece 242 is welded in the first sealing groove, the sealing strip 241 is adhered to the first elastic piece 242, the sealing strip 241 is slidably arranged in the first sealing groove, the first elastic piece 242 enables the sealing strip 241 to upwards prop against the steel belt 5, and the first elastic piece 242 is a spring.

The second circulation unit comprises a second sealing part and a second circulation hole 248, the second sealing part comprises a second sealing groove, a second elastic piece 244 and a sealing ring 243, the second sealing groove is annularly arranged on the middle partition plate 220 outside the supporting groove 223, the second elastic piece 244 is welded in the second sealing groove, the sealing ring 243 is adhered to the second elastic piece 244, the sealing ring 243 is slidably arranged in the second sealing groove, the second elastic piece 244 enables the sealing ring 243 to abut against the steel belt 5, the second circulation hole 248 is arranged on the middle partition plate 220 between the second sealing groove and the supporting groove 223, and the second elastic piece 244 is also a spring.

As shown in fig. 3, the third circulation unit is disposed around the middle partition 220, the third circulation unit includes four air knives 245 and a connecting member 247 between the four air knives 245, the upper and lower four air knives 245 form a rectangular frame to enclose the middle partition 220, the air knives 245 can blow air inwards and upwards, the air knives 245 on the front and rear sides are connected to the fixing base by bolts, gaps are reserved between the air knives 245 and the middle partition 220 and between the air knives 245 and the base 210, first air guide channels are disposed in the connecting member 247, the air knives 245 are in a strip shape, second air guide channels 246 are disposed in the air knives 245 along the length direction, and the air inlets, the first air guide channels and the second air guide channels 246 are sequentially communicated.

The external circulation mechanism comprises a water tank and a water pump in the water tank, a water outlet is arranged at the bottom of the cavity, the water outlet is communicated with the water tank, and the water pump is communicated with the first water inlet.

The first valve block 212 and the second valve block 221, the air inlet and the first air guide channel, the air compressor and the air inlet, the water outlet and the water tank, and the water pump and the first water inlet are all connected through a hose 250.

The specific implementation steps are as follows:

1. the water pump pumps out the water in the water tank, and the water passes through first water inlet, first valve piece 212, second valve piece 221, second water inlet 222, main passageway 224, secondary passageway 225 and first bolt hole in proper order, finally spouts from water jet 234, and then produces static pressure to steel band 5, and then provides holding power.

2. The water sprayed from the water spraying ports 234 is collected in the dynamic pressure grooves 231, and when the steel strip 5 rotates, the water in the dynamic pressure grooves 231 is driven to flow onto the dynamic pressure strips 232 to generate upward dynamic pressure, so that the dynamic pressure is generated on the steel strip 5, and further, the supporting force is provided.

3. As shown in fig. 4, when the steel strip 5 above the plane supporting device body 2 moves leftwards or rightwards, the sealing strips 241 can block the water attached to the steel strip 5, so that the water flows back into the cavity from the first circulation hole; water splashed back and forth or not blocked by the sealing strip 241, blocked by the sealing ring 243, flows back to the cavity from the second circulation hole 248; water not blocked by the seal ring 243 is blown back by the air knife 245 and flows back into the cavity from the gap between the air knife 245 and the middle partition 220; water that is not blocked by the sealing ring 243 flows back into the cavity through the gap between the air knife 245 and the base 210.

4. The water in the cavity flows back into the water tank from the water outlet, so that circulation is formed.

The foregoing is merely exemplary of the present invention, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present invention, and these should also be regarded as the protection scope of the present invention, which does not affect the effect of the implementation of the present invention and the practical applicability of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. A planar support device, characterized in that: including supporting mechanism, supporting mechanism includes the backup pad of base and base top, is equipped with first water inlet on the base, is equipped with dynamic pressure unit in the backup pad, and dynamic pressure unit includes dynamic pressure groove and dynamic pressure strip, and dynamic pressure groove and dynamic pressure strip interval set up, and first water inlet and dynamic pressure groove intercommunication.

2. A planar support apparatus as claimed in claim 1 wherein: still be equipped with the throttle bolt in the backup pad, the throttle bolt matrix arrangement, a row of throttle bolt sets up in a dynamic pressure inslot, all is equipped with the spray jet that vertically link up on the throttle bolt, and the spray jet communicates with first water inlet.

3. A planar support apparatus as claimed in claim 2 wherein: the supporting mechanism further comprises an intermediate baffle plate, the intermediate baffle plate comprises a second water inlet and a water guide channel, the water guide channel comprises a main channel, a plurality of secondary channels and a plurality of vertical first bolt holes, the main channel is parallel to the width direction of the steel belt, the secondary channels are perpendicular to the main channel, and the first water inlet, the second water inlet, the main channel, the secondary channels, the first bolt holes and the water spraying openings are sequentially communicated.

4. A planar support apparatus as claimed in claim 3 wherein: the inner circulation mechanism comprises a first circulation unit, a second circulation unit and a third circulation unit, the base and the middle partition plate enclose to form a cavity, and the first circulation unit, the second circulation unit and the third circulation unit can guide water flow between the supporting plate and the steel belt to return to the cavity.

5. A planar support apparatus as claimed in claim 4 wherein: the water pump is communicated with the first water inlet.

6. A planar support apparatus as claimed in claim 5 wherein: the first circulating unit is arranged on the middle partition plate and comprises two first sealing parts and a plurality of first circulating holes, a supporting groove is formed in the middle partition plate, the supporting plate is contained in the supporting groove, a circulating groove is formed between the supporting plate and the supporting groove, and the first circulating holes are formed in the bottom of the circulating groove; the first sealing part comprises a first sealing groove, a first elastic piece and sealing strips, wherein the two first sealing grooves are respectively arranged outside the supporting groove and close to two sides of the roller, the first elastic piece is arranged in the first sealing groove, the sealing strips are arranged on the first elastic piece, and the sealing strips can be abutted against the steel strips by the first elastic piece.

7. A planar support apparatus as claimed in claim 6 wherein: the second circulation unit sets up on the intermediate baffle, and the second circulation unit includes second sealing part and second circulation hole, and second sealing part includes second seal groove, second elastic component and sealing ring, and second seal groove annular setting is outside the supporting slot, and the second elastic component sets up in the second seal groove, and the sealing ring setting is on the second elastic component, and the second elastic component enables the sealing ring to support tight steel band, and the second circulation hole setting is between second seal groove and supporting slot.

8. A planar support apparatus as claimed in claim 7 wherein: the third circulation unit is arranged on the side face of the middle partition plate, the third circulation unit comprises a plurality of air knives and connecting pieces among the plurality of air knives, the middle partition plate is enclosed by the plurality of air knives, gaps are reserved between the air knives and the middle partition plate, an air inlet is formed in the base, a first air guide channel is formed in the connecting piece, a second air guide channel is formed in the air knives, and the air inlet, the first air guide channel and the second air guide channel are sequentially communicated.