Folding arm crane for rotor room machining
By designing a slewing and folding structure and a thrust ball bearing for the articulated boom crane, the problem of lifting in confined spaces was solved, enabling flexible lifting and high-precision movement, adapting to harsh environments, and reducing costs.
Patent Information
- Application Number
- CN202520527882.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-25
AI Technical Summary
When existing jib cranes are used for processing in the rotor room of wind turbine generators, the limited space makes them difficult to operate effectively, resulting in inconvenience for hoisting.
A folding boom crane was designed, which uses a rotating and folding structure of a small swing arm and a large swing arm, combined with a portable mini electric hoist, to move the hoisted workpiece. It is suitable for confined spaces, and uses thrust ball bearings and limit blocks to improve flexibility and stability.
It enables flexible hoisting in confined spaces, reduces manufacturing costs, improves hoisting accuracy and environmental adaptability of the equipment, and extends its service life.
Smart Images
Figure CN223906408U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to hoisting equipment field relates to a kind of folding arm crane for rotor house processing. BACKGROUND
[0002] When my enterprise processes in the rotor house of wind driven generator, it needs to use boom to retrieve and replace the milling head of milling tool, but the internal space of rotor house is small, the structure of commonly used rocker arm type crane is complex, needs larger space to display, and it is difficult to operate in narrow and compact area. UTILITY MODEL CONTENTS
[0003] For the content in the background art, the technical scheme provides another structure of folding arm crane, with simplicity and practicality, suitable for use in narrow and compact space, easy and flexible to swing, low in manufacturing cost.
[0004] The disclosed folding arm crane for rotor house processing, one end of the large swing arm is hinged to the base through a second rotary mechanism, the other end of the large swing arm is hinged with a small swing arm through a first rotary mechanism, the distal end of the small swing arm is fixedly connected with a lifting ring, and a portable miniature electric hoist is hung on the lifting ring. The portable miniature electric hoist is a prior art, used for lifting workpieces such as milling heads, and under the action of the first rotary mechanism and the second rotary mechanism, the small swing arm and the large swing arm can rotate and fold to complete the movement of lifting the workpiece, thereby realizing a larger span of application range and a smaller swing radius of rotation, which is very suitable for use in narrow and compact space.
[0005] Preferably, the first rotary mechanism includes a first clamping plate, a second clamping plate, a first hinge shaft and a first thrust ball bearing.
[0006] The first clamping plate and the second clamping plate are fixed to one end of the small swing arm close to the large swing arm, the corresponding end of the large swing arm is located between the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are respectively provided with a rotating hole, and the corresponding position of the end of the large swing arm is also provided with a rotating hole.
[0007] An annular recess is further formed in the upper opening of the rotating hole of the large swing arm, the first thrust ball bearing is arranged in the annular recess, the race of the first thrust ball bearing is matched with the annular recess, and the shaft of the first thrust ball bearing is matched with the first hinge shaft. The first thrust ball bearing arranged in this way can withstand a larger axial load.
[0008] Such a first rotary mechanism makes the small swing arm easy and flexible to swing, and can realize accurate movement of its position by manually pushing and pulling the weight, without the need for an additional cantilever driving mechanism, and the manufacturing cost is low.
[0009] Further, the first clamping plate is located above the second clamping plate, the top end of the first hinge shaft is integrally connected with a limiting block, the size of the limiting block is greater than the size of the rotating hole of the first clamping plate, the bottom surface of the limiting block is in contact with the top surface of the first clamping plate, so that the first hinge shaft can be well limited and cannot fall off from the rotating hole, and the load of the first thrust ball bearing can be reduced.
[0010] Further, the first clamping plate is located above the second clamping plate, the top end of the first hinge shaft is integrally connected with a limiting block, the size of the limiting block is greater than the size of the rotating hole of the first clamping plate, the bottom surface of the limiting block is in contact with the top surface of the first clamping plate, so that the first hinge shaft can be well limited and cannot fall off from the rotating hole, and the load of the first thrust ball bearing can be reduced.
[0011] Further, the bottom surface of the first clamping plate is integrally connected with a blocking ring, the top surface of the corresponding end portion of the large swing arm protrudes and is located in the blocking ring of the first clamping plate, a gasket is further arranged between the bottom surface of the corresponding end portion of the large swing arm and the second clamping plate, and of course, the first hinge shaft passes through the gasket and is arranged; the blocking ring and the gasket are arranged to also prevent water and dust from entering the rotating part, so that the folding arm crane can adapt to a more severe environment and the service life is prolonged.
[0012] Preferably, the second rotary mechanism comprises a shaft seat, a second hinge shaft, a second thrust ball bearing and a shaft sleeve.
[0013] The side surface of the base is provided with the second hinge shaft through two oppositely arranged shaft seats, that is, the shaft seat is fixedly connected to the side surface of the base, the second hinge shaft is vertically arranged, and the two ends of the second hinge shaft are arranged in the shaft holes of the corresponding shaft seats.
[0014] The shaft seat is provided with the second thrust ball bearing, the race of the second thrust ball bearing is fixedly connected to the corresponding shaft seat, and the shaft of the second thrust ball bearing is fixedly connected to the second hinge shaft, so that the second thrust ball bearing can bear a larger axial load.
[0015] The large swing arm is fixedly connected with the shaft sleeve at one end close to the base, and the shaft sleeve is fixedly connected to the middle portion of the second hinge shaft; the second rotary mechanism is arranged in this way, so that the large swing arm has high rotary swing stability.
[0016] Further, a blocking ring is arranged between the corresponding end surfaces of the second thrust ball bearing and the shaft sleeve, the periphery of the blocking ring extends to the side surface of the second thrust ball bearing to form a blocking sleeve, of course, the blocking sleeve is integrally connected with the blocking ring, and the second thrust ball bearing is wrapped in the blocking sleeve; the blocking sleeve and the blocking ring are arranged to make the second thrust ball bearing have good sealing performance, can prevent water and dust, can adapt to a more severe environment, and prolong the service life of the folding arm crane.
[0017] Through the above technical scheme, the utility model at least has the following beneficial effects:
[0018] The folding arm crane for rotor house machining belongs to an extended structure form of the cantilever crane, has simplicity and practicability, and realizes the movement of the hoisted workpiece through the rotation folding of the small swing arm and the large swing arm, so that the application range of larger span and the rotation radius of smaller swing are realized, and the folding arm crane is very suitable for use in the space with small and compact area; and the rotation mechanism at the joint of the small swing arm and the large swing arm makes the swing flexible under the stress state, and the accurate movement of the position can be realized through the manual pushing and pulling of the heavy object, and an additional cantilever driving mechanism does not need to be arranged, and the manufacturing cost is low. BRIEF DESCRIPTION OF DRAWINGS
[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings, and these drawings are all simplified schematic views, and only schematically show the basic structure of the present application, and thus only show the structures related to the present application.
[0020] Figure 1 The folding arm crane is the overall structure schematic view and the partial sectional view.
[0021] Figure 2 The folding arm crane is the overall structure schematic view and the partial sectional view. Figure 1 The enlarged view of A in the folding arm crane is the sectional view of the first rotation mechanism.
[0022] Figure 3 The enlarged view of B in the folding arm crane is the partial sectional view of the second rotation mechanism. Figure 1 The enlarged view of B in the folding arm crane is the partial sectional view of the second rotation mechanism. DETAILED DESCRIPTION
[0023] In the description of the present application, it needs to be understood that if the directions or position relationships indicated by the terms "upper", "lower", "left", "right", "front", "back" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and thus the terms describing the position relationship are only used for exemplary illustration, and cannot be understood as the limitation of the present patent; if the terms "first", "second" and the like are used, they are only for the description purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features, and thus the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. For the ordinary skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.
[0024] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0025] Reference Figures 1 to 3 A kind of folding arm crane for rotor house processing, one end of large swing arm 3 is hinged to base 4 by second rotary mechanism 2, the other end of large swing arm 3 is hinged with small swing arm 5 by first rotary mechanism 1, the bottom surface of the distal end of small swing arm 5 is fixedly connected with lifting ring 6, portable miniature electric hoist is hung on lifting ring 6, the portable miniature electric hoist is prior art, for lifting workpiece such as milling head, under the action of first rotary mechanism 1 and second rotary mechanism 2, the rotation folding of small swing arm 5 and large swing arm 3 can complete the movement of hoisting workpiece, so as to realize the application range of larger span and the rotation radius of smaller swing, it is very suitable for the use in the area of small space and compact.
[0026] Reference Figure 2 The first rotary mechanism 1 includes first clamping plate 101, second clamping plate 102, first hinge shaft 103 and first thrust ball bearing 104;
[0027] The first clamping plate 101 and the second clamping plate 102 are fixed on one end of the small swing arm 5 close to the large swing arm 3, and the corresponding end of the large swing arm 3 is located between the first clamping plate 101 and the second clamping plate 102, the first clamping plate 101 and the second clamping plate 102 are respectively provided with rotating holes, and the corresponding position of the end of the large swing arm 3 is also provided with a rotating hole, and the first hinge shaft 103 is located in the rotating holes of the first clamping plate 101, the second clamping plate 102 and the large swing arm 3;
[0028] The rotating hole of the large swing arm 3 is also provided with an annular recess 107 at the upper opening, and the first thrust ball bearing 104 is arranged in the annular recess 107, the race of the first thrust ball bearing 104 is matched with the annular recess 107, and the shaft of the first thrust ball bearing 104 is matched with the first hinge shaft 103, so that the first thrust ball bearing 104 can bear larger axial load.
[0029] Such first rotary mechanism 1 makes the swing of small swing arm 5 light and flexible, and the accurate movement of its position can be realized by manually pushing and pulling the weight, without additional cantilever driving mechanism, and the manufacturing cost is low.
[0030] The first clamping plate 101 is located above the second clamping plate 102, the first hinge shaft 103 is integrally connected with a limiting block 105 at the top end, the size of the limiting block 105 is larger than that of the rotating hole of the first clamping plate 101, the bottom surface of the limiting block 105 is in contact with the top surface of the first clamping plate 101, so that the first hinge shaft 103 can be well limited and will not fall off from the rotating hole, and the load of the first thrust ball bearing 104 can be reduced.
[0031] The end cover 106 is further fixedly installed on the first clamping plate 101 by bolts, the limiting block 105 is located inside the end cover 106, and sealing glue is injected between the contact surface of the end cover 106 and the first clamping plate 101; the setting of the end cover 106 makes the first thrust ball bearing 104 have good sealing performance, can prevent water and dust, can adapt to a relatively harsh environment, and prolongs the service life of the folding arm crane.
[0032] The bottom surface of the first clamping plate 101 is integrally connected with a blocking ring 108, the top surface of the corresponding end portion of the large swing arm 3 protrudes and is located in the blocking ring 108 of the first clamping plate 101, the bottom surface of the corresponding end portion of the large swing arm 3 is provided with a gasket 109 between the second clamping plate 102, and of course the first hinge shaft 103 passes through the gasket 109; the setting of the blocking ring 108 and the gasket 109 can also prevent water and dust at the rotating part, so that the folding arm crane can adapt to a relatively harsh environment and prolong the service life.
[0033] Reference Figure 3 The second rotary mechanism 2 comprises an axle seat 201, a second hinge shaft 202, a second thrust ball bearing 203 and a shaft sleeve 204.
[0034] The side surface of the base 4 is provided with the second hinge shaft 202 through two oppositely arranged axle seats 201, that is, the axle seat 201 is fixedly connected to the side surface of the base 4, the second hinge shaft 202 is vertically arranged, and the two ends of the second hinge shaft 202 are respectively arranged in the shaft holes of the corresponding axle seats 201;
[0035] The axle seat 201 is provided with the second thrust ball bearing 203, the seat ring of the second thrust ball bearing 203 is fixedly connected with the corresponding axle seat 201, and the shaft ring of the second thrust ball bearing 203 is fixedly connected with the second hinge shaft 202, so that the second thrust ball bearing 203 arranged in this way can make the second rotary mechanism 2 bear a larger axial load;
[0036] The large swing arm 3 is fixedly connected with the shaft sleeve 204 at one end close to the base 4, and the shaft sleeve 204 is fixedly connected to the middle part of the second hinge shaft 202; the second rotary mechanism 2 arranged in this way makes the large swing arm 3 have higher rotary swing stability.
[0037] The second thrust ball bearing 203 is provided with a baffle ring 205 between the corresponding end face of the shaft sleeve 204, the periphery of the baffle ring 205 extends to the side of the second thrust ball bearing 203 to form a baffle sleeve 206, of course, the baffle sleeve 206 is integrally connected with the baffle ring 205, and the corresponding second thrust ball bearing 203 is wrapped in the baffle sleeve 206; the baffle sleeve 206 and the baffle ring 205 are arranged so that the second thrust ball bearing 203 also has good sealing performance, can prevent water and dust, can adapt to a more harsh environment, and prolong the service life of the folding arm crane.
[0038] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. According to the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A knuckle boom for rotor house machining, characterized by: One end of the large swing arm (3) is hinged to the base (4) through the second rotary mechanism (2), the other end of the large swing arm (3) is hinged with the small swing arm (5) through the first rotary mechanism (1), the end of the small swing arm (5) is fixedly connected with the lifting ring (6), the portable micro electric hoist is hung on the lifting ring (6).
2. The knuckle boom crane for rotor house machining according to claim 1, characterized in that: The first rotary mechanism (1) comprises a first clamping plate (101), a second clamping plate (102), a first hinge shaft (103) and a first thrust ball bearing (104); The small swing arm (5) is fixed with the first clamping plate (101) and the second clamping plate (102) at one end close to the large swing arm (3), the corresponding end of the large swing arm (3) is located between the first clamping plate (101) and the second clamping plate (102), the first clamping plate (101) and the second clamping plate (102) are respectively provided with a rotating hole, and the corresponding position of the end of the large swing arm (3) is also provided with a rotating hole, and the first hinge shaft (103) is located in the rotating holes of the first clamping plate (101), the second clamping plate (102) and the large swing arm (3) at the same time. The upper end of the rotating hole of the large swing arm (3) is also provided with an annular recess (107), the first thrust ball bearing (104) is arranged in the annular recess (107), the race of the first thrust ball bearing (104) is matched with the annular recess (107), and the shaft ring of the first thrust ball bearing (104) is matched with the first hinge shaft (103).
3. The knuckle boom for rotor house machining according to claim 2, characterized in that: The first clamping plate (101) is located above the second clamping plate (102), the top end of the first hinge shaft (103) is integrally connected with a limiting block (105), the size of the limiting block (105) is greater than that of the rotating hole of the first clamping plate (101), and the bottom surface of the limiting block (105) is in contact with the top surface of the first clamping plate (101).
4. The knuckle boom for rotor house machining according to claim 3, characterized in that: The end cover (106) is further fixedly installed on the first clamping plate (101) through bolts, the limiting block (105) is located in the end cover (106), and sealing glue is injected between the contact surface of the end cover (106) and the first clamping plate (101).
5. The knuckle boom for rotor house machining according to claim 3, characterized in that: The bottom surface of the first clamping plate (101) is integrally connected with a retaining ring (108), the top surface of the corresponding end of the large swing arm (3) protrudes and is located in the retaining ring (108) of the first clamping plate (101), and the gasket (109) is further arranged between the bottom surface of the corresponding end of the large swing arm (3) and the second clamping plate (102).
6. The knuckle boom for rotor house machining according to claim 1, characterized in that: The second rotary mechanism (2) comprises an axle seat (201), a second hinge shaft (202), a second thrust ball bearing (203) and a shaft sleeve (204); The side surface of the base (4) is provided with the second hinge shaft (202) through two oppositely arranged axle seats (201), the second thrust ball bearing (203) is arranged on the axle seat (201), the race of the second thrust ball bearing (203) is fixedly connected with the corresponding axle seat (201), and the shaft ring of the second thrust ball bearing (203) is fixedly connected with the second hinge shaft (202); The large swing arm (3) is fixedly connected with the shaft sleeve (204) at one end close to the base (4), and the shaft sleeve (204) is fixedly connected to the middle part of the second hinge shaft (202).
7. A knuckle boom for rotor house machining according to claim 6, characterized in that: The second thrust ball bearing (203) is provided with a check ring (205) between the corresponding end face of the shaft sleeve (204), the periphery of the check ring (205) extends to the side of the second thrust ball bearing (203) to form a check sleeve (206), and the check sleeve (206) wraps the corresponding second thrust ball bearing (203) inside.