Rotary speed reducer and heliostat

Abstract

According to the rotary speed reducer and the heliostat, the fixed transmission part is arranged on the fixed part, the rotary part is arranged to be arranged on the fixed transmission part in a sleeving mode, and the rotary motion of the rotary part relative to the fixed transmission part is achieved through meshing transmission between the driving part on the rotary part and the fixed transmission part; and the two axial ends of the fixed transmission part are rotationally connected with the rotating part through middle rotating parts correspondingly, so that the rotating part rotates relative to the fixed transmission part, and a radial limiting part with at least one side being a rotating sliding face is arranged to eliminate the radial rotating gap of the rotating part relative to the fixed transmission part in the rotating process. The radial limiting pieces are matched with the middle rotating pieces at the two ends in the axial direction, so that the contact area between the rotation part and the fixed transmission piece is increased, the rotation speed reducer has the good anti-overturning capacity, and the problem that the rigidity and the anti-overturning capacity of an existing rotation speed reducer cannot meet the requirement for stable work of a heliostat under the wind load condition is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rotary speed reducer technical field especially relates to a rotary speed reducer and heliostat. BACKGROUND

[0002] Solar energy is widely used as a renewable clean energy, especially in the field of photo-thermal power generation. Among them, tower type solar photo-thermal power generation is concerned because of its high heat collection efficiency, high thermal conversion efficiency, high temperature heat storage, combined operation, and other unique advantages suitable for large-scale application.

[0003] As the key of tower type solar photo-thermal power generation, the sun tracking function of heliostat is realized by the rotation of two angles of pitch angle and azimuth angle. The azimuth angle rotation of heliostat is generally driven by rotary speed reducer.

[0004] In order to meet the high-precision sun tracking operation of heliostat under the working condition, the rotary speed reducer not only has high transmission accuracy, but also needs high structural rigidity and anti-overturning capacity, which can ensure the stability of heliostat under wind load conditions, so that the light spot offset does not exceed the design requirement. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to provide a rotary speed reducer and heliostat to solve the problem that the rigidity and anti-overturning capacity of the existing rotary speed reducer cannot meet the stable work of heliostat under wind load conditions.

[0006] To solve the above problems, the technical scheme of the utility model is:

[0007] The rotary speed reducer of the utility model is used for heliostat, which comprises:

[0008] The fixed part is provided with a fixed transmission part;

[0009] The rotary part is sleeved on the fixed transmission part, and the two ends of the fixed transmission part in the axial direction are respectively connected with the rotary part through the intermediate rotating part;

[0010] The radial limiting part is respectively contacted with the fixed transmission part and the rotary part on both sides in the radial direction, and at least one side of the radial limiting part in the radial direction is configured as a rotary sliding surface;

[0011] The driving part is fixed to the rotary part, and the output end of the driving part is configured to mesh with the fixed transmission part to drive the rotary part and the driving part to rotate on the fixed part.

[0012] The rotary speed reducer of the utility model, the fixed transmission part comprises a first inner side annular body and a first outer side annular body arranged in sequence and connected along the radial direction outwardly;

[0013] The first inner annular body is fixedly connected to the fixed part;

[0014] An outer ring surface of the first outer annular body is provided with a worm gear type for engaging transmission, and two ends of the first outer annular body in the axial direction are respectively configured as an intermediate bearing surface corresponding to the intermediate rotating part.

[0015] The rotary reducer of the utility model, the inner ring surface of the first outer annular body contacts the radial limiting part, and one end of the first inner annular body away from the fixed part in the axial direction forms a first axial limiting surface, and the first axial limiting surface is configured to limit the axial movement of the radial limiting part towards the fixed part.

[0016] The rotary reducer of the utility model, the rotary part comprises a bearing body, a second inner annular body and a second outer annular body extending in the axial direction of the bearing body, and a circular radial extension part;

[0017] An outer ring surface of the second inner annular body contacts the radial limiting part;

[0018] The second outer annular body is sleeved on the first outer annular body and cooperates to form a rotary space, and at least part of the driving part extends into the rotary space;

[0019] The circular radial extension part is connected to one end of the second outer annular body away from the bearing body, and the circular radial extension part and the bearing body are respectively configured to form an end side bearing surface towards the corresponding intermediate rotating part.

[0020] The rotary reducer of the utility model, at least part of the second inner annular body extends into the first outer annular body.

[0021] The rotary reducer of the utility model, the intermediate rotating part is a thrust bearing.

[0022] The rotary reducer of the utility model, the intermediate rotating part comprises an axial gasket, and the axial gasket is arranged between the thrust bearing and the fixed transmission part or between the thrust bearing and the rotary part.

[0023] The rotary reducer of the utility model, the radial limiting part is a sliding bearing.

[0024] The rotary reducer of the utility model, the driving part comprises a driving motor and a worm for engaging transmission;

[0025] The driving motor is fixed to the rotary part, and the worm is connected to the output end of the driving motor.

[0026] The utility model discloses a heliostat, including the rotary speed reducer of any one of above.

[0027] The utility model discloses a heliostat, including the rotary speed reducer of any one of above.

[0028] The utility model discloses a heliostat, including the rotary speed reducer of any one of above. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 For the sectional view of the rotary speed reducer of the utility model;

[0030] Figure 2 For the sectional view of the rotary speed reducer of the utility model;

[0031] Figure 3 For the sectional view of the rotary speed reducer of the utility model;

[0032] Figure 4 For the overall schematic view of the rotary speed reducer of the utility model.

[0033] Figure 5 For the schematic view of the heliostat of the utility model.

[0034] Reference Signs: 1, rotary part;101, bearing body;102, second outer annular body;103, second inner annular body;2, base;3, worm wheel;301, first outer annular body;302, first inner annular body;4, worm;5, sliding bearing;6, thrust bearing;7, annular radial extension piece;8, fastener;9, deep groove ball bearing;10, angular contact ball bearing;11, drive motor;12, heliostat main shaft;13, support base;14, stand. DETAILED DESCRIPTION

[0035] The utility model discloses a rotary speed reducer and heliostat make further detailed instructions below combining with the drawings and specific embodiments. According to the following description and claims, the advantages and features of the utility model will be more clear.

[0036] Embodiment one

[0037] Reference Figures 1 to 5 In one embodiment, a rotary speed reducer for heliostat, comprising fixed part, rotary part 1, radial limit piece and drive part.

[0038] Wherein, the fixed part is provided with fixed transmission part, and the fixed part is used for installing to the stand 14 (the fixed part can be specifically the base 2) of heliostat. Rotary part 1 is used for bearing heliostat mirror body (specifically can be realized to the bearing of heliostat main shaft 12 through support seat 13), and rotary part 1 is sleeved in fixed transmission part, and the both ends of fixed transmission part in axial direction are respectively connected with rotary part 1 through intermediate rotating part (rotary part 1 is sleeved while also extending to the both ends of fixed transmission part in axial direction, and then the both ends of fixed transmission part in axial direction are formed to the clamping of two intermediate rotating parts).

[0039] Radial limit piece is respectively contacted in radial direction on the both sides of fixed transmission part and rotary part 1, and at least one side of radial limit piece in radial direction is configured as rotary sliding surface (radial limit piece is fixed in fixed transmission part and is connected with rotary part 1 slidingly, or, radial limit piece is fixed in rotary part 1 and is connected with fixed transmission part slidingly, or, radial limit piece is connected with rotary part 1 and fixed transmission part slidingly respectively).

[0040] Drive part is fixed in rotary part 1, and the output end of drive part is configured as engagement transmission in fixed transmission part to drive rotary part 1 and drive part to rotate in fixed part.

[0041] The embodiment is through setting fixed transmission part on fixed part, and setting rotary part 1 to be sleeved in the fixed transmission part, and the rotary motion of rotary part 1 relative to fixed transmission part is realized by the engagement transmission between drive part on rotary part 1 and fixed transmission part, and the both ends of fixed transmission part in axial direction are respectively connected with rotary part 1 through intermediate rotating part, and then the rotation of rotary part 1 relative to fixed transmission part is realized, and the radial rotation gap of rotary part 1 relative to fixed transmission part in the rotation process is eliminated by setting radial limit piece as rotary sliding surface on at least one side, and the purpose of increasing the contact area between rotary part 1 and fixed transmission part is realized by bearing radial force through radial limit piece and cooperating axial force through intermediate rotating part on the both ends, so that the rotary speed reducer of the embodiment has good anti-overturning ability, and the problem that the rigidity and anti-overturning ability of the existing rotary speed reducer cannot satisfy the stable work of heliostat under wind load is solved.

[0042] The specific structure of the rotary speed reducer of the present embodiment is further described below:

[0043] In the present embodiment, the intermediate rotating member described above can be the thrust bearing 6, and the radial limiting member can be the sliding bearing 5.

[0044] In the present embodiment, the fixed transmission member can specifically be a worm gear 3, which includes a first inner annular body 302 and a first outer annular body 301 arranged in sequence and connected in the radial direction outwardly.

[0045] The first inner annular body 302 is fixedly connected to the base 2 by fasteners 8, specifically a bolted fixed mode. The outer ring surface of the first outer annular body 301 is provided with worm gear teeth for meshing transmission, and the two ends of the first outer annular body 301 in the axial direction are respectively configured as intermediate bearing surfaces bearing the corresponding intermediate rotating members, i.e., the outer ring surface of the worm gear 3 forms a radially inwardly recessed outer ring step recess at the end close to the base 2 in the axial direction (the horizontal surface of the outer ring step recess is the intermediate bearing surface), and the space between the outer ring step recess and the base 2 is used to make the rotary part 1 extend into and clamp the intermediate rotating member.

[0046] Further, the inner ring surface of the first outer annular body 301 contacts the radial limiting member, and the first inner annular body 302 forms a first axial limiting surface at the end away from the fixed part in the axial direction, which is configured to limit the axial movement of the radial limiting member towards the fixed part, i.e., the inner ring surface of the worm gear 3 forms a radially outwardly recessed inner ring step recess at the end away from the base 2 in the axial direction (the horizontal surface of the inner ring step recess is the axial limiting surface), and the recessed space formed by the inner ring step recess is used to arrange the sliding bearing 5 (the outer ring surface of the sliding bearing 5 contacts the inner ring surface of the inner ring step recess).

[0047] In the present embodiment, the rotary part 1 can specifically include a bearing body 101, a second inner annular body 103 and a second outer annular body 102 (both concentrically sleeved) extending in the axial direction of the bearing body 101, and a ring-shaped radial extension member 7 (i.e., a bearing seat).

[0048] The outer ring surface of the second inner annular body 103 contacts the inner ring surface of the sliding bearing 5. The second outer annular body 102 is sleeved on the first outer annular body 301 and cooperates to form a rotary space, and at least part of the driving part extends into the rotary space (i.e., the driving end of the driving part extends into the rotary space and meshes with the worm gear 3 for transmission).

[0049] The ring-shaped radial extension 7 is connected to one end of the second outer ring-shaped body 102 away from the bearing body 101 (i.e. the ring-shaped radial extension 7 and the bearing body 101 are respectively located at two ends of the second outer ring-shaped body 102 in the axial direction), and the ring-shaped radial extension 7 and the bearing body 101 are respectively configured to form an end-side bearing surface towards the corresponding intermediate rotating member, i.e. the end-side bearing surface of the ring-shaped radial extension 7 and the intermediate bearing surface formed by the stepped recess of the outer ring are respectively clamped at two ends of the corresponding thrust bearing 6, and the end-side bearing surface of the bearing body 101 and another intermediate bearing surface on the worm wheel 3 are respectively clamped at two ends of the corresponding thrust bearing 6.

[0050] Further, at least part of the second inner ring-shaped body 103 extends into the first outer ring-shaped body 301 to further increase the contact area of the rotating part 1 relative to the worm wheel 3 through the sliding bearing 5 while avoiding increasing the axial size of the rotary speed reducer, thereby further improving the rigidity and anti-overturning capability of the rotary speed reducer.

[0051] In the embodiment, the ring-shaped radial extension 7 (bearing seat) can be specifically connected to the second outer ring-shaped body 102 by bolts.

[0052] In the embodiment, the intermediate rotating member includes an axial spacer arranged between the thrust bearing 6 and the corresponding intermediate bearing surface or arranged between the thrust bearing 6 and the corresponding end-side bearing surface. The function of the axial spacer is to adjust the pre-tightening force of the thrust bearing 6, and the pre-tightening force of the thrust bearing 6 is controlled by controlling the thickness of the axial spacer. The thicker the axial spacer, the greater the pre-tightening force of the thrust bearing 6, and the stronger the torsional rigidity of the rotary speed reducer, but the transmission efficiency will be reduced. Therefore, the pre-tightening force is controlled within a certain range according to actual use needs.

[0053] In the embodiment, the driving part can specifically include a driving motor 11 and a worm 4 for meshing transmission. The driving motor 11 is fixed to the rotating part 1, and the worm 4 is connected to the output end of the driving motor 11. Among them, one pair of angular contact ball bearings 10 and one deep groove ball bearing 9 are respectively arranged at both ends of the worm 4 to fix the worm 4 to the bearing body 101 and / or the extension structure on the bearing body 101, and a threaded round nut is arranged at one end of the worm 4 away from the driving motor 11, which can press the angular contact ball bearing 10 to prevent the worm 4 from moving axially during transmission.

[0054] When the rotary speed reducer of the embodiment works, the base 2 is fixed and does not move, the worm 4 and the worm wheel 3 are meshed with each other, the worm 4 is driven by the driving motor 11 to rotate around the worm wheel 3 while self-transmitting, the rotating part 1 is connected to the worm wheel 3 in a combined manner through a sliding bearing 5 and two thrust bearings 6, thereby driving the box body to rotate, and finally driving the heliostat mirror body to rotate. Such a structure makes the rotary speed reducer have good rigidity and anti-overturning capability.

[0055] Embodiment two

[0056] The embodiment provides a heliostat, which comprises the slewing reducer in the above embodiment one. The slewing reducer is arranged on the fixed part, the fixed transmission part is arranged on the fixed part, the slewing part 1 is sleeved on the fixed transmission part, the slewing movement of the slewing part 1 relative to the fixed transmission part is realized through the meshing transmission between the driving part on the slewing part 1 and the fixed transmission part, the two ends of the fixed transmission part in the axial direction are respectively rotationally connected with the slewing part 1 through the intermediate rotating parts, the slewing movement of the slewing part 1 relative to the fixed transmission part is further realized, the radial limiting part with at least one side being a slewing sliding surface is arranged to eliminate the radial rotation gap of the slewing part 1 relative to the fixed transmission part in the slewing process, the radial limiting part bears the radial force and cooperates with the intermediate rotating parts at the two ends in the axial direction to bear the axial force, and the purpose of increasing the contact area between the slewing part 1 and the fixed transmission part is further realized, so that the slewing reducer has good anti-overturning capability, and the problems that the rigidity and the anti-overturning capability of the existing slewing reducer cannot meet the stable working requirements of the heliostat under the wind load condition are solved.

[0057] The above describes the embodiments of the utility model in detail in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments. Even if various changes are made to the utility model, if the changes belong to the scope of the utility model claims and equivalent technologies, they still fall within the protection scope of the utility model.

Claims

1. A slewing reduction gear, characterized in that A heliostat for heliostat, comprising: a fixed part, which is provided with a fixed transmission member; a rotating part, which is sleeved on the fixed transmission member, and the two ends of the fixed transmission member in the axial direction are respectively connected with the rotating part through intermediate rotating members; a radial limiting member, which is respectively contacted with the fixed transmission member and the rotating part on both sides in the radial direction, and at least one side of the radial limiting member in the radial direction is configured as a rotating sliding surface; a driving part, which is fixed to the rotating part, and the output end of the driving part is configured to mesh with the fixed transmission member to drive the rotating part and the driving part to rotate on the fixed part.

2. The slewing reduction gear as claimed in claim 1, characterized in that The fixed transmission member comprises a first inner annular body and a first outer annular body arranged in sequence and connected in the radial direction; The first inner annular body is fixedly connected to the fixed part; The outer ring surface of the first outer annular body is provided with a worm gear type for meshing transmission, and the two ends of the first outer annular body in the axial direction are respectively configured as intermediate bearing surfaces corresponding to the intermediate rotating members.

3. The slewing reduction gear as claimed in claim 2, characterized in that The inner ring surface of the first outer annular body is contacted with the radial limiting member, one end of the first inner annular body away from the fixed part in the axial direction forms a first axial limiting surface, and the first axial limiting surface is configured to limit the axial movement of the radial limiting member towards the fixed part.

4. The slewing reduction gear as claimed in claim 2, characterized in that The rotating part comprises a bearing body, a second inner annular body and a second outer annular body extending in the axial direction on the bearing body, and a ring-shaped radial extension member; The outer ring surface of the second inner annular body is contacted with the radial limiting member; The second outer annular body is sleeved on the first outer annular body and cooperates to form a rotating space, and at least part of the driving part extends into the rotating space; The ring-shaped radial extension member is connected to one end of the second outer annular body away from the bearing body, and the ring-shaped radial extension member and the bearing body are respectively configured to form end side bearing surfaces corresponding to the intermediate rotating members.

5. The slewing reduction gear as claimed in claim 4, characterized in that At least part of the second inner annular body extends into the first outer annular body.

6. The slewing reduction gear as claimed in claim 1, characterized in that The intermediate rotating member is a thrust bearing.

7. The slewing reduction gear as claimed in claim 6, characterized in that The intermediate rotating member comprises an axial gasket arranged between the thrust bearing and the fixed transmission member or arranged between the thrust bearing and the rotating part.

8. The slewing reduction gear as claimed in claim 1, characterized in that The radial limiting member is a sliding bearing.

9. The slewing reduction gear as claimed in claim 1, characterized in that The driving part comprises a driving motor and a worm for meshing transmission; The driving motor is fixed to the rotating part, and the worm is connected to the output end of the driving motor.

10. A heliostat, characterized in that, The heliostat comprises the rotating speed reducer according to any one of claims 1 to 9.

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