Positioning fixture

Abstract

The application discloses a positioning tool, which comprises a movable base plate arranged movably in the interior of a first to-be-installed part, a lifting plate arranged above the movable base plate, a lifting driving mechanism arranged vertically on the vertical side wall of the movable base plate and drivingly connected with the lifting plate, and a supporting plate arranged movably on the lifting plate and used for placing the connecting end of a second to-be-installed part, wherein the moving direction of the supporting plate and the moving direction of the movable base plate are perpendicular to each other in the horizontal plane. The positioning tool has the advantages of simple structure, small space occupation and the ability to assist the positioning and installation of the second to-be-installed part in the first to-be-installed part with a narrow cross section.

Description

Technical Field

[0001] This application belongs to the field of engineering machinery technology, and specifically relates to a positioning tool. Background Technology

[0002] With the gradual innovation and optimization of engineering machinery structures, it is necessary to install a second component (such as a boom cylinder) inside a first component (such as a boom cylinder) with a narrow cross-section. Due to the small cross-sectional area of ​​the first component, installers cannot enter the first component to assist in the installation of the second component. Furthermore, when installing the second component, the crane can only lift the other connecting end of the second component, making it impossible for the second component to maintain overall balance. This makes it difficult to position the second component within the narrow cross-section of the first component, resulting in low installation efficiency for the second component in the aforementioned installation scenarios. Utility Model Content

[0003] The purpose of this application is to provide a positioning fixture that has the advantages of simple structure, small space occupation, and the ability to assist the second part to be installed in positioning and installation within the narrow cross section of the first part to be installed.

[0004] To achieve the above objectives, this application provides a positioning fixture, which includes: A movable chassis for being movably mounted inside the first component to be installed; A lifting platform is installed above a mobile chassis in a height-adjustable manner. The lifting drive mechanism is vertically mounted on the vertical side wall of the mobile chassis and is driven by the lifting plate. A pallet, movably mounted on a lifting plate and used to place the connecting end of a second component to be installed, is perpendicular to the direction of movement of the pallet and the direction of movement of the movable chassis on a horizontal plane.

[0005] In embodiments of this application, the lifting drive mechanism includes: The first telescopic drive component has a fixed end connected to the front vertical side wall of the mobile chassis, and a telescopic end connected to the bottom front end of the lifting plate. The second telescopic drive component has its fixed end connected to the rear vertical side wall of the mobile chassis, and its telescopic end connected to the bottom rear end of the lifting plate.

[0006] In the embodiments of this application, the positioning fixture further includes a third telescopic drive member, which is arranged along the width direction of the pallet and driven to connect with the pallet at the middle position in the length direction.

[0007] In the embodiments of this application, the third telescopic drive member is disposed at the bottom of the lifting plate, and the positioning fixture further includes an L-shaped drive connector, the short side of which is connected to the telescopic end of the third telescopic drive member, and the long side of which is connected to the bottom of the pallet.

[0008] In embodiments of this application, the positioning fixture further includes an anti-slip pad disposed on the top of the tray.

[0009] In the embodiments of this application, the anti-slip mat may be made of rubber, silicone or EVA.

[0010] In embodiments of this application, the positioning fixture further includes a guide component disposed between the lifting plate and the pallet and used to guide the pallet.

[0011] In embodiments of this application, the guiding component includes: The guide rail is set on the top of the lifting plate along the direction of movement of the pallet; The slider is movably mounted on the guide rail and connected to the bottom of the lifting plate.

[0012] In embodiments of this application, the positioning fixture further includes a connecting component that connects the lifting plate and the movable chassis and can support the lifting plate.

[0013] In embodiments of this application, the connection component includes: The first link is rotatably connected to the side wall of the lifting plate in the width direction; The second link has its first end rotatably connected to the end of the first link away from the lifting plate, and its second end rotatably connected to the side wall of the movable chassis.

[0014] As can be seen from the above technical solution, the positioning fixture includes a movable chassis, a lifting plate, a lifting drive mechanism, and a support plate. The movable chassis is movably mounted inside the first part to be installed. The lifting plate is movably mounted above the movable chassis. The lifting drive mechanism is vertically mounted on the vertical side wall of the movable chassis and driven to connect with the lifting plate. The support plate is movably mounted on the lifting plate and is used to place the connecting end of the second part to be installed. In the horizontal plane, the moving direction of the support plate is perpendicular to the moving direction of the movable chassis. This positioning fixture has a simple structure and enables the second part to be installed to move in six directions inside the first part to be installed, so that the pins can connect the second part to be installed and the first part to be installed together, thereby realizing the installation of the second part to be installed in the first part to be installed, which has a small cross-sectional area. The lifting drive mechanism is vertically mounted on the vertical side wall of the movable chassis and driven to connect with the lifting plate, which helps to reduce the number of parts of the positioning fixture and can directly drive the lifting plate to rise or fall, which helps to reduce the overall height and space occupied by the positioning fixture, and thus helps to improve the adaptability of the positioning fixture to the installation conditions inside the first part to be installed.

[0015] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the positioning tooling in the embodiments of this application; Figure 2 This is a first-view schematic diagram of the working state of the positioning tooling in the embodiments of this application; Figure 3 This is a second-view schematic diagram of the working state of the positioning tooling in the embodiments of this application.

[0017] Explanation of reference numerals in the attached figures 1-Mobile chassis; 2-Boom; 3-Lifting plate; 4-Lifting drive mechanism; 401-First telescopic drive component; 402-Second telescopic drive component; 5-Panel; 6-Boom cylinder; 7-Third telescopic drive component; 8-Drive connector; 801-Short side; 802-Long side; 9-Anti-slip mat; 10-Guide assembly; 1001-Guide rail; 1002-Slider; 11-Connecting assembly; 1101-First connecting rod; 1102-Second connecting rod. Detailed Implementation

[0018] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0019] Embodiments of this application provide a positioning fixture, such as Figures 1-3 As shown, the positioning fixture includes: A movable chassis 1 is used to be movably installed inside the first component to be installed; The lifting platform 3 is movably mounted above the mobile chassis 1; The lifting drive mechanism 4 is vertically mounted on the vertical side wall of the mobile chassis 1 and is drivenly connected to the lifting plate 3. The pallet 5 is movably mounted on the lifting plate 3 and is used to place the connecting end of the second component to be installed. On the horizontal plane, the moving direction of the pallet 5 is perpendicular to the moving direction of the movable chassis 1.

[0020] Specifically, in this embodiment, the first component to be installed can be the boom cylinder 2 of the boom, and the second component to be installed can be the boom cylinder 6. The boom cylinder 6 is suitable for the boom device, which also includes multiple boom cylinders 2 that are sequentially embedded (such as the main boom cylinder and the articulated boom cylinder of the boom device of an aerial fire truck, etc.). The multiple boom cylinders 2 together form the boom of the boom device. The mobile chassis 1 can move axially within the boom 2. The support plate 5 can hold the connecting end of the boom cylinder 6. When the boom cylinder 6 needs to be installed in the boom 2, firstly, the first connecting end of the boom cylinder 6 is held by a crane. Then, the second connecting end of the boom cylinder 6 (which has a pin hole) is placed on the support plate 5 of the positioning fixture (at this time, the positioning fixture is located on the outside of the boom 2). After that, the mobile chassis 1 is moved to the inside of the boom and continues to move along the axial direction of the boom 2 towards the pin hole of the boom 2 (the pin hole of the boom 2 is formed on the boom 2). The second connecting end of the boom cylinder 6 also moves towards the pin hole of the boom 2 until, axially, the pin hole of the second connecting end of the boom cylinder 6 is aligned with the boom 2. The pin holes are located at the same position; the lifting drive mechanism 4 can drive the lifting plate 3 to move vertically, thereby adjusting the height of the pin hole at the second connecting end of the boom cylinder 6 so that the height of the pin hole at the second connecting end of the boom cylinder 6 is consistent with the height of the pin hole at the boom cylinder 2; the support plate 5 can also move the second connecting end of the boom cylinder 6 along a direction perpendicular to the axial direction of the boom cylinder 2 so that the pin can smoothly pass through the pin hole at the second connecting end of the boom cylinder 6 and the pin hole at the boom cylinder 2 (if the axial direction of the boom cylinder 6 and the axial direction of the boom cylinder 2 are not consistent, the pin may be difficult to pass through the pin hole at the second connecting end of the boom cylinder 6), so that the boom cylinder 6 and the boom cylinder 2 can be connected together by the pin, thereby installing the boom cylinder 6 in the boom cylinder 2 with a small cross-sectional area. Furthermore, compared to other structural forms of lifting drive mechanism 4 (such as scissor-type lifting drive mechanism 4), the lifting drive mechanism 4 in this embodiment is vertically arranged on the vertical side wall of the mobile chassis 1 and drivenly connected to the lifting plate 3. This is beneficial to reducing the number of parts and can directly drive the lifting plate 3 to rise or fall. It is also beneficial to reduce the overall height of the positioning fixture (if the positioning fixture adopts a scissor-type lifting drive mechanism 4, the scissor-type lifting drive mechanism 4 is installed between the mobile chassis 1 and the lifting plate 3. Due to the structural characteristics of the scissor-type lifting drive mechanism 4, the overall height of the positioning fixture will increase). This reduces the space occupied by the positioning fixture and improves the adaptability of the positioning fixture to the installation conditions inside the boom 2.

[0021] The positioning fixture in this application has a simple structure. The movable chassis 1, the lifting plate 3, and the support plate 5 cooperate to move the second connecting end of the boom cylinder 6 in six directions inside the boom cylinder 2 until the pin hole of the second connecting end of the boom cylinder 6 is in the correct position before the boom cylinder 6 is installed (i.e., the second connecting end of the boom cylinder 6 is positioned before installation). The boom cylinder 6 and the boom cylinder 2 can be connected together by the pin, thereby realizing the installation of the boom cylinder 6 in the boom cylinder 2 with its narrow cross-sectional area. In addition, the lifting drive mechanism 4 is vertically arranged on the vertical side wall of the movable chassis 1 and driven by the lifting plate 3. This helps to reduce the number of parts of the positioning fixture and can directly drive the lifting plate 3 to rise or fall. It also helps to reduce the overall height and space occupied by the positioning fixture, thereby improving the adaptability of the positioning fixture to the installation conditions inside the boom cylinder 2.

[0022] In one embodiment of this application, the lifting drive mechanism 4 includes: The first telescopic drive component 401 has a fixed end connected to the front vertical side wall of the mobile chassis 1 and a telescopic end connected to the bottom front end of the lifting plate 3. The second telescopic drive component 402 has its fixed end connected to the rear vertical side wall of the mobile chassis 1, and its telescopic end connected to the bottom rear end of the lifting plate 3.

[0023] Specifically, in this embodiment, the movable chassis 1 can move along its front-to-back direction (i.e., the length direction of the movable chassis 1). Both the first telescopic drive member 401 and the second telescopic drive member 402 can be selected as telescopic electric cylinders. The fixed end of the first telescopic drive member 401 and the telescopic end of the first telescopic drive member 402 are both cylinder barrels of the telescopic electric cylinder, and both the telescopic end of the first telescopic drive member 401 and the telescopic end of the first telescopic drive member 402 are both push rods of the telescopic electric cylinder. The first telescopic drive member 401 and the second telescopic drive member 402 are respectively disposed at the front end and rear end of the movable chassis 1. The bottom end of the fixed end of the first telescopic drive member 401 is flush with the bottom end of the front vertical sidewall of the movable chassis 1, and the bottom end of the fixed end of the second telescopic drive member 402 is flush with the bottom end of the rear vertical sidewall of the movable chassis 1. This arrangement helps to reduce the overall height of the positioning fixture and facilitates further miniaturization of the positioning fixture design.

[0024] In one embodiment of this application, the positioning fixture further includes a third telescopic drive member 7, which is disposed along the width direction of the pallet 5 and is driven to connect with the pallet 5 at the middle position in the length direction.

[0025] Specifically, in this embodiment, the third telescopic drive 7 can be a telescopic electric cylinder. The moving direction of the pallet 5 is consistent with the width direction of the pallet 5. The driving end of the third telescopic drive 7 is connected to the pallet 5 at the middle position in the length direction (in this embodiment, the pallet 5 is consistent with the front and rear direction of the moving chassis 1 in the length direction). This allows the force to be more even when the pallet 5 moves with the second connecting end of the boom cylinder 6, which is beneficial to ensuring the accuracy of the movement of the pallet 5 and the second connecting end of the boom cylinder 6.

[0026] In one embodiment of this application, the third telescopic drive member 7 is disposed at the bottom of the lifting plate 3, and the positioning fixture further includes an L-shaped drive connector 8. The short side 801 of the drive connector 8 is connected to the telescopic end of the third telescopic drive member 7, and the long side 802 of the drive connector 8 is connected to the bottom of the support plate 5.

[0027] Specifically, in this embodiment, both the short side 801 and the long side 802 are plate-shaped and perpendicular to each other. The short side 801 is distributed vertically, and the long plate is distributed horizontally. The L-shaped drive connector 8 can not only realize the connection between the third telescopic drive 7 located on the upper and lower sides of the lifting plate 3 and the support plate 5, but also has the advantages of simple structure, easy manufacturing and improved compactness of component layout.

[0028] In one embodiment of this application, the positioning fixture further includes an anti-slip pad 9 disposed on the top of the pallet 5. The anti-slip pad 9 is attached to the top of the pallet 5. When the second connecting end of the boom cylinder 6 is placed on the anti-slip pad 9, there is sufficient friction between the two, which prevents the second connecting end of the boom cylinder 6 from falling off the positioning fixture when the positioning fixture moves with the second connecting end of the boom cylinder 6, thereby improving the reliability of the positioning fixture.

[0029] In one embodiment of this application, the anti-slip pad 9 may be made of rubber, silicone or EVA (EthyleneVinyl Acetate Copolymer). The anti-slip pad 9 made of the above materials has a certain elasticity, so that when the second connecting end of the boom cylinder 6 is placed on the anti-slip pad 9, the anti-slip pad 9 can buffer the impact between the two and also prevent the paint on the outside of the boom cylinder 6 from being scratched off, thus protecting the paint on the outside of the boom cylinder 6.

[0030] In one embodiment of this application, the positioning fixture further includes a guide assembly 10 disposed between the lifting plate 3 and the pallet 5 for guiding the pallet 5, wherein the guide assembly 10 includes: The guide rail 1001 is set on the top of the lifting plate 3 along the moving direction of the pallet 5; The slider 1002 is movably mounted on the guide rail 1001 and connected to the bottom of the lifting plate 3.

[0031] Specifically, in this embodiment, the positioning fixture has two guide components 10, which are respectively disposed at the front and rear ends of the bottom of the support plate 5. The long side 802 is located between the two guide wire components. This arrangement further improves the compactness of the component layout of the positioning fixture. Furthermore, the cross-section of the guide rail 1001 is I-shaped, and the cross-sectional shape of the slider 1002 is adapted to the cross-sectional shape of the guide rail 1001. This arrangement helps to improve the tightness of the connection between the slider 1002 and the guide rail 1001, and also prevents the support plate 5 from deviating from its set trajectory when moving.

[0032] In one embodiment of this application, the positioning fixture further includes a connecting component 11 that connects the lifting plate 3 and the movable chassis 1 and supports the lifting plate 3, wherein the connecting component 11 includes: The first connecting rod 1101 is rotatably connected to the side wall of the lifting plate 3 in the width direction; The second link 1102 has its first end rotatably connected to the end of the first link 1101 away from the lifting plate 3, and its second end rotatably connected to the side wall of the movable chassis 1.

[0033] Specifically, in this embodiment, there are two sets of connecting components 11 respectively disposed on both sides of the lifting plate 3 (or the movable chassis 1) in the width direction. Each set of connecting components 11 includes two connecting components 11 respectively disposed at the front and rear ends of the lifting plate 3 (or the movable chassis 1). The above arrangement is beneficial to improving the connection reliability between the lifting plate 3 and the movable chassis 1. When the first telescopic drive member 401 and the second telescopic drive member 402 extend to the preset length, the first connecting rod 1101 and the second connecting rod 1102 are both in a vertical state, working together with the first telescopic drive member 401 and the second telescopic drive member 402 to support the lifting plate 3 and the components above it, thereby enhancing the overall support capacity of the positioning fixture. In addition, if the first telescopic drive member 401 and / or the second telescopic drive member 402 are accidentally subjected to an impact force in the length direction of the lifting plate 3 (or the movable chassis 1), the first connecting rod 1101 and the second connecting rod 1102 can work together to ensure that the lifting plate 3 will not change position under the above circumstances, further ensuring the positional accuracy of the lifting plate 3 and the components above it and the reliability of the positioning fixture.

[0034] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0037] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A positioning tooling, characterized in that, The positioning fixture includes: A movable chassis (1) is used to be movably installed inside the first component to be installed; The lifting plate (3) is vertically mounted above the movable chassis (1); The lifting drive mechanism (4) is vertically arranged on the vertical side wall of the mobile chassis (1) and drivenly connected to the lifting plate (3); The pallet (5) is movably mounted on the lifting plate (3) and is used to place the connecting end of the second part to be installed. On the horizontal plane, the moving direction of the pallet (5) and the moving direction of the moving chassis (1) are perpendicular to each other.

2. The positioning fixture according to claim 1, characterized in that, The lifting drive mechanism (4) includes: The first telescopic drive component (401) has a fixed end connected to the front vertical side wall of the mobile chassis (1) and a telescopic end connected to the bottom front end of the lifting plate (3). The second telescopic drive component (402) has a fixed end connected to the rear vertical side wall of the mobile chassis (1) and a telescopic end connected to the bottom rear end of the lifting plate (3).

3. The positioning fixture according to claim 1, characterized in that, The positioning fixture also includes a third telescopic drive component (7), which is arranged along the width direction of the pallet (5) and driven to connect with the pallet (5) at the middle position in the length direction.

4. The positioning fixture according to claim 3, characterized in that, The third telescopic drive member (7) is disposed at the bottom of the lifting plate (3). The positioning fixture also includes an L-shaped drive connector (8). The short side (801) of the drive connector (8) is connected to the telescopic end of the third telescopic drive member (7), and the long side (802) of the drive connector (8) is connected to the bottom of the pallet (5).

5. The positioning fixture according to claim 1, characterized in that, The positioning fixture also includes an anti-slip pad (9) disposed on the top of the tray (5).

6. The positioning fixture according to claim 5, characterized in that, The anti-slip mat (9) can be made of rubber, silicone or EVA.

7. The positioning fixture according to claim 1, characterized in that, The positioning fixture also includes a guide component (10) disposed between the lifting plate (3) and the pallet (5) for guiding the pallet (5).

8. The positioning fixture according to claim 7, characterized in that, The guide component (10) includes: The guide rail (1001) is disposed on the top of the lifting plate (3) along the moving direction of the pallet (5); The slider (1002) is movably mounted on the guide rail (1001) and connected to the bottom of the lifting plate (3).

9. The positioning fixture according to claim 1, characterized in that, The positioning fixture also includes a connecting component (11) that connects the lifting plate (3) and the mobile chassis (1) and can support the lifting plate (3).

10. The positioning fixture according to claim 9, characterized in that, The connection component (11) includes: The first link (1101) is rotatably connected to the side wall of the lifting plate (3) in the width direction; The second link (1102) has its first end rotatably connected to the end of the first link (1101) away from the lifting plate (3), and its second end rotatably connected to the side wall of the movable chassis (1).

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