Three-stage hydraulic telescopic structure

Abstract

The utility model discloses a three-level hydraulic telescopic structure which comprises a main body unit and a chaining unit, the main body unit comprises a supporting frame, a basic arm is fixedly installed at the upper end of the supporting frame, a top-level telescopic arm, a second-level telescopic arm and a third-level telescopic arm are arranged in the basic arm, a base is fixedly installed at the lower end of the supporting frame, and the chaining unit is connected with the base. The linkage unit comprises a second-level arm telescopic plate chain, a second-level arm telescopic plate chain, a top-level arm telescopic plate chain, a top-level arm telescopic plate chain and a hydraulic oil cylinder. The top-level telescopic arm, the second-level telescopic arm and the third-level telescopic arm are driven to stretch out and draw back to the arm length required by the work of the window cleaning machine through the cooperative arrangement of the second-level arm shrinkage plate chain, the second-level arm extension plate chain, the top-level arm extension plate chain and the top-level arm shrinkage plate chain, and the coverage of any place in the work range is achieved. The device is relatively simple in structure, the production cost is reduced, and the device is convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic telescopic structures, in particular to a three-stage hydraulic telescopic structure. Background Art

[0002] The three-stage hydraulic telescopic structure is a widely used mechanical structure in various fields, particularly where multi-stage telescopic functionality is required. Its operating principle typically involves hydraulic transmission. Specifically, a hydraulic system delivers oil to a hydraulic cylinder, causing a hydraulic motor to push the piston outward, thereby achieving telescopic movement. The telescopic frame in this structure can be extended or retracted as needed, achieving height or length adjustment.

[0003] Traditional window cleaning machines equipped with telescopic arms typically utilize the following mechanism: two-stage telescopic arms rely on hydraulic cylinders driving a plate chain, while three-stage or higher telescopic arms are driven by a reduction gear unit and rack and pinion system. However, this design is relatively complex, increasing production costs and potentially leading to maintenance difficulties.

[0004] Therefore, a three-stage hydraulic telescopic structure is needed to solve the above problems. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] In view of the problems of the above-mentioned three-stage hydraulic telescopic structure, the present utility model is proposed.

[0007] Therefore, the purpose of the present utility model is to provide a three-stage hydraulic telescopic structure, which is used to solve the problem that "traditional window cleaning machines usually adopt the following mechanism when equipped with telescopic arms: the movement of the two-stage telescopic arms relies on the hydraulic cylinder to drive the plate chain, while the three-stage or more telescopic arms are driven by a reducer group and a rack gear. However, this design structure is relatively complex, which not only increases the production cost, but also may bring inconvenience in maintenance" and other problems.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a three-stage hydraulic telescopic structure, comprising:

[0009] The main unit includes a support frame, a basic arm is fixedly installed on the upper end of the support frame, a top telescopic arm, a secondary telescopic arm and a tertiary telescopic arm are arranged in the basic arm, and a base is fixedly installed on the lower end of the support frame;

[0010] The link unit includes a secondary arm retractable plate chain, a secondary arm extension plate chain, a top arm extension plate chain, a top arm retractable plate chain and a hydraulic cylinder. The tail end of the hydraulic cylinder is fixedly mounted on the basic arm through a pin shaft, and the front end of the hydraulic cylinder is mounted on the third-stage telescopic arm through a pin shaft. A hydraulic lock and a pressure maintaining mechanism are fixedly mounted on the hydraulic cylinder. The front end of the secondary arm retractable plate chain is fixedly connected to the inner side of the basic arm, the tail end of the secondary arm retractable plate chain is fixedly connected to the tail of the secondary telescopic arm, and the middle position of the secondary arm retractable plate chain is slidably arranged on the inner wall of the basic arm. In the embodiment, the front end and tail end of the secondary arm extension plate chain are fixedly connected to the basic arm and the secondary telescopic arm respectively, the middle position of the secondary arm extension plate chain is slidably set in the inner wall of the tertiary telescopic arm, the front end and tail end of the top arm extension plate chain are fixedly connected to the tertiary telescopic arm and the top telescopic arm respectively, the middle position of the top arm extension plate chain is slidably set in the inner wall of the secondary telescopic arm, the front end and tail end of the top arm retracting plate chain are fixedly connected to the tertiary telescopic arm and the top telescopic arm respectively, and the middle position of the top arm retracting plate chain is slidably set in the inner wall of the tertiary telescopic arm.

[0011] As a preferred solution of the three-stage hydraulic telescopic structure described in the utility model, the front end and tail end of the secondary arm retraction plate chain are respectively fixedly installed with a secondary arm retraction mounting plate and a secondary arm retraction positioning plate, the secondary arm retraction mounting plate and the secondary arm retraction positioning plate are respectively fixedly installed on the inner side of the front end of the basic arm and the tail of the secondary telescopic arm, the tail of the three-stage telescopic arm is fixedly installed with a No. 1 wheel groove, and the secondary arm retraction plate chain is slidably arranged on the No. 1 wheel groove.

[0012] As a preferred solution of the three-stage hydraulic telescopic structure described in the utility model, the front end and the tail end of the secondary arm extension plate chain are respectively fixedly installed with a secondary arm extension mounting plate and a secondary arm extension positioning plate, the secondary arm extension mounting plate and the secondary arm extension positioning plate are respectively fixedly installed on the outside of the front end of the basic arm and the outside of the tail end of the secondary telescopic arm, the front end of the three-stage telescopic arm is fixedly installed with a No. 2 wheel groove, and the secondary arm extension plate chain is slidably set on the No. 2 wheel groove.

[0013] As a preferred solution of the three-stage hydraulic telescopic structure described in the utility model, the front end and the tail end of the top-level arm extension plate chain are respectively fixedly installed with a top-level arm extension mounting plate and a top-level arm extension positioning plate, the top-level arm extension mounting plate and the top-level arm extension positioning plate are respectively fixedly installed on the front end outer side of the third-level telescopic arm and the tail end outer side of the top-level telescopic arm, the front end of the secondary telescopic arm is fixedly installed with a No. 3 wheel groove, and the top-level arm extension plate chain is slidably set on the No. 3 wheel groove.

[0014] As a preferred solution of the three-stage hydraulic telescopic structure described in the utility model, wherein: the front end and the tail end of the top-level arm retraction plate chain are respectively fixedly installed with a top-level arm retraction mounting plate and a top-level arm retraction positioning plate, the top-level arm retraction mounting plate and the top-level arm retraction positioning plate are respectively fixedly installed on the outer side of the lower end of the third-stage telescopic arm and the tail end of the top-level telescopic arm, the tail end of the second-stage telescopic arm is fixedly installed with a fourth wheel groove, and the top-level arm retraction plate chain is slidably set on the fourth wheel groove.

[0015] As a preferred solution of the three-stage hydraulic telescopic structure described in the utility model, the three-stage telescopic arm is slidably connected to the basic arm, the two-stage telescopic arm is slidably connected to the three-stage telescopic arm, and the top-level telescopic arm is slidably connected to the two-stage telescopic arm.

[0016] Beneficial effects of the utility model:

[0017] The three-stage telescopic arm is extended and retracted by the hydraulic cylinder, and the top-level telescopic arm, the second-level telescopic arm and the third-level telescopic arm are extended and retracted by the coordinated arrangement of the second-level arm retraction plate chain, the second-level arm extension plate chain, the top-level arm extension plate chain and the top-level arm retraction plate chain. The arm length is extended and retracted to the required operation of the window cleaning machine, so as to cover any place within the working range. Compared with the existing technology, the structure of this device is relatively simple, the production cost is reduced, and the maintenance of the device is also convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0019] Figure 1 This is a front structural schematic diagram of a three-stage hydraulic telescopic structure of the utility model.

[0020] Figure 2 It is a partial structural diagram of a three-stage hydraulic telescopic structure of the utility model.

[0021] Description of the drawings: 100, main unit; 101, support frame; 102, basic arm; 103, top-level telescopic arm; 104, secondary telescopic arm; 105, tertiary telescopic arm; 106, base; 200, link unit; 201, secondary arm retracting plate chain; 202, secondary arm extending plate chain; 203, top-level arm extending plate chain; 204, top-level arm retracting plate chain. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0026] Reference Figure 1-Figure 2 , is an embodiment of the present utility model, which provides a three-stage hydraulic telescopic structure, comprising:

[0027] The main unit 100 includes a support frame 101, a basic arm 102 is fixedly mounted on the upper end of the support frame 101, a top telescopic arm 103, a secondary telescopic arm 104 and a tertiary telescopic arm 105 are arranged in the basic arm 102, and a base 106 is fixedly mounted on the lower end of the support frame 101;

[0028] The link unit 200 includes a secondary arm retractable plate chain 201, a secondary arm extension plate chain 202, a top arm extension plate chain 203, a top arm retractable plate chain 204 and a hydraulic cylinder. The tail end of the hydraulic cylinder is fixedly mounted on the basic arm 102 through a pin shaft, and the front end of the hydraulic cylinder is mounted on the third telescopic arm 105 through a pin shaft. A hydraulic lock and a pressure maintaining mechanism are fixedly mounted on the hydraulic cylinder. The front end of the secondary arm retractable plate chain 201 is fixedly connected to the inner side of the basic arm 102, and the tail end of the secondary arm retractable plate chain 201 is fixedly connected to the tail of the secondary telescopic arm 104. The middle position of the secondary arm retractable plate chain 201 is slidably set in the inner wall of the basic arm 102. The front end and tail end of the secondary arm extension plate chain 202 are fixedly connected to the basic arm 102 and the secondary telescopic arm 104 respectively, and the middle position of the secondary arm extension plate chain 202 is slidably set in the inner wall of the tertiary telescopic arm 105. The front end and tail end of the top-level arm extension plate chain 203 are fixedly connected to the tertiary telescopic arm 105 and the top-level telescopic arm 103 respectively, and the middle position of the top-level arm extension plate chain 203 is slidably set in the inner wall of the secondary telescopic arm 104. The front end and tail end of the top-level arm retracting plate chain 204 are fixedly connected to the tertiary telescopic arm 105 and the top-level telescopic arm 103 respectively, and the middle position of the top-level arm retracting plate chain 204 is slidably set in the inner wall of the tertiary telescopic arm 105;

[0029] The hydraulic cylinder is equipped with a hydraulic lock and a pressure-maintaining mechanism. The setting of the hydraulic lock allows the arm pipe to stay at will between the longest and shortest working positions to ensure that there is coverage within the range. The pressure-maintaining mechanism ensures that the hydraulic cylinder will not release pressure when the oil pipe is damaged, thereby ensuring the stability of the equipment.

[0030] Among them, the front end and tail end of the secondary arm retraction plate chain 201 are respectively fixedly installed with a secondary arm retraction mounting plate and a secondary arm retraction positioning plate, the secondary arm retraction mounting plate and the secondary arm retraction positioning plate are respectively fixedly installed on the inner side of the front end of the basic arm 102 and the tail of the secondary telescopic arm 104, and the tail of the tertiary telescopic arm 105 is fixedly installed with a No. 1 wheel groove, and the secondary arm retraction plate chain 201 is slidably set on the No. 1 wheel groove, and the No. 1 wheel groove plays a role in limiting the secondary arm retraction plate chain 201.

[0031] Among them, the front end and tail end of the secondary arm extension plate chain 202 are respectively fixedly installed with a secondary arm extension mounting plate and a secondary arm extension positioning plate, the secondary arm extension mounting plate and the secondary arm extension positioning plate are respectively fixedly installed on the outer side of the front end of the basic arm 102 and the outer side of the tail end of the secondary telescopic arm 104, and the front end of the tertiary telescopic arm 105 is fixedly installed with a No. 2 wheel groove, and the secondary arm extension plate chain 202 is slidably set on the No. 2 wheel groove, and the No. 2 wheel groove plays a role in limiting the secondary arm extension plate chain 202.

[0032] Among them, the front end and tail end of the top-level arm extension plate chain 203 are respectively fixedly installed with the top-level arm extension mounting plate and the top-level arm extension positioning plate, the top-level arm extension mounting plate and the top-level arm extension positioning plate are respectively fixedly installed on the front end outer side of the third-level telescopic arm 105 and the tail end outer side of the top-level telescopic arm 103, and the front end of the second-level telescopic arm 104 is fixedly installed with the No. 3 wheel groove, and the top-level arm extension plate chain 203 is slidably set on the No. 3 wheel groove, and the No. 3 wheel groove plays a role in limiting the top-level arm extension plate chain 203.

[0033] Among them, the front end and tail end of the top-level arm retraction plate chain 204 are respectively fixedly installed with a top-level arm retraction mounting plate and a top-level arm retraction positioning plate, the top-level arm retraction mounting plate and the top-level arm retraction positioning plate are respectively fixedly installed on the outer side of the lower end of the third-level telescopic arm 105 and the tail end of the top-level telescopic arm 103, and the tail end of the second-level telescopic arm 104 is fixedly installed with a No. 4 wheel groove, and the top-level arm retraction plate chain 204 is slidably set on the No. 4 wheel groove, and the No. 4 wheel groove plays a role in limiting the top-level arm retraction plate chain 204.

[0034] Among them, the third-level telescopic arm 105 is slidably connected to the basic arm 102, the second-level telescopic arm 104 is slidably connected to the third-level telescopic arm 105, and the top-level telescopic arm 103 is slidably connected to the second-level telescopic arm 104.

[0035] Working principle: The three-stage telescopic arm 105 is extended and retracted by the hydraulic cylinder, and the top-level telescopic arm 103, the second-level telescopic arm 104 and the third-level telescopic arm 105 are extended and retracted by the coordinated arrangement of the second-level arm retraction plate chain 201, the second-level arm extension plate chain 202, the top-level arm extension plate chain 203 and the top-level arm retraction plate chain 204, to reach the arm length required for the window cleaning machine to cover any place within the working range. Compared with the existing technology, this device has a simple structure, reduces production costs, and is easy to maintain. The contents not described in detail in this description belong to the existing technology well known to professional and technical personnel in this field.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A three-stage hydraulic telescopic structure, characterized in that: include: A main unit (100), the main unit (100) comprising a support frame (101), a basic arm (102) being fixedly mounted on the upper end of the support frame (101), a top telescopic arm (103), a second telescopic arm (104) and a third telescopic arm (105) being arranged inside the basic arm (102), and a base (106) being fixedly mounted on the lower end of the support frame (101); A link unit (200) includes a secondary arm retractable plate chain (201), a secondary arm extension plate chain (202), a top arm extension plate chain (203), a top arm retractable plate chain (204) and a hydraulic oil cylinder. The tail end of the hydraulic oil cylinder is fixedly mounted on the basic arm (102) through a pin shaft, and the front end of the hydraulic oil cylinder is mounted on the third telescopic arm (105) through a pin shaft. A hydraulic lock and a pressure maintaining mechanism are fixedly mounted on the hydraulic oil cylinder. The front end of the secondary arm retractable plate chain (201) is fixedly connected to the inner side of the basic arm (102), the tail end of the secondary arm retractable plate chain (201) is fixedly connected to the tail of the secondary telescopic arm (104), and the middle position of the secondary arm retractable plate chain (201) is slidably arranged in the inner wall of the basic arm (102). The front end and the tail end of the secondary arm extension plate chain (202) are fixedly connected to the basic arm (102) and the secondary telescopic arm (104) respectively; the middle position of the secondary arm extension plate chain (202) is slidingly arranged in the inner wall of the tertiary telescopic arm (105); the front end and the tail end of the top arm extension plate chain (203) are fixedly connected to the tertiary telescopic arm (105) and the top telescopic arm (103) respectively; the middle position of the top arm extension plate chain (203) is slidingly arranged in the inner wall of the secondary telescopic arm (104); the front end and the tail end of the top arm retracting plate chain (204) are fixedly connected to the tertiary telescopic arm (105) and the top telescopic arm (103) respectively; the middle position of the top arm retracting plate chain (204) is slidingly arranged in the inner wall of the tertiary telescopic arm (105).

2. A three-stage hydraulic telescopic structure according to claim 1, characterized in that: The front end and the tail end of the secondary arm retractable plate chain (201) are respectively fixedly mounted with a secondary arm retractable mounting plate and a secondary arm retractable positioning plate, the secondary arm retractable mounting plate and the secondary arm retractable positioning plate are respectively fixedly mounted on the inner side of the front end of the basic arm (102) and the tail end of the secondary telescopic arm (104), the tail end of the tertiary telescopic arm (105) is fixedly mounted with a No. 1 wheel groove, and the secondary arm retractable plate chain (201) is slidably arranged on the No. 1 wheel groove.

3. The three-stage hydraulic telescopic structure according to claim 1, characterized in that: The front end and the rear end of the secondary arm extension plate chain (202) are respectively fixedly mounted with a secondary arm extension mounting plate and a secondary arm extension positioning plate, and the secondary arm extension mounting plate and the secondary arm extension positioning plate are respectively fixedly mounted on the outside of the front end of the basic arm (102) and the outside of the rear end of the secondary telescopic arm (104), and the front end of the tertiary telescopic arm (105) is fixedly mounted with a second wheel groove, and the secondary arm extension plate chain (202) is slidably arranged on the second wheel groove.

4. The three-stage hydraulic telescopic structure according to claim 1, characterized in that: The front end and the rear end of the top-level arm extension plate chain (203) are respectively fixedly mounted with a top-level arm extension mounting plate and a top-level arm extension positioning plate. The top-level arm extension mounting plate and the top-level arm extension positioning plate are respectively fixedly mounted on the front outer side of the third-level telescopic arm (105) and the rear outer side of the top-level telescopic arm (103). The front end of the second-level telescopic arm (104) is fixedly mounted with a third wheel groove, and the top-level arm extension plate chain (203) is slidably arranged on the third wheel groove.

5. The three-stage hydraulic telescopic structure according to claim 1, characterized in that: The front end and the tail end of the top arm retractable plate chain (204) are respectively fixedly mounted with a top arm retractable mounting plate and a top arm retractable positioning plate, the top arm retractable mounting plate and the top arm retractable positioning plate are respectively fixedly mounted on the outer side of the lower end of the third telescopic arm (105) and the tail end of the top telescopic arm (103), the tail end of the second telescopic arm (104) is fixedly mounted with a fourth wheel groove, and the top arm retractable plate chain (204) is slidably arranged on the fourth wheel groove.

6. The three-stage hydraulic telescopic structure according to claim 1, characterized in that: The third-level telescopic arm (105) is slidably connected to the basic arm (102), the second-level telescopic arm (104) is slidably connected to the third-level telescopic arm (105), and the top-level telescopic arm (103) is slidably connected to the second-level telescopic arm (104).

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