Turnover ladder stand and excavator

Abstract

The utility model relates to a ladder stand, in particular to a turnover ladder stand, which comprises a ladder stand main body (1), one end of the support (2) is hinged to the crawling ladder body (1), and a detachable connecting structure (6) used for being connected with a fixing part is formed at the other end of the support (2); the reinforcing structure is arranged at the hinged end of the ladder stand main body (1) and the bracket (2); and the driving mechanism is used for driving the crawling ladder main body (1) to rotate around the hinged end of the crawling ladder main body (1) so as to fold and unfold the crawling ladder main body (1). In addition, the utility model further relates to an excavator comprising the turnover ladder stand. According to the turnover ladder, the reinforcing structure is additionally arranged at the hinged end of the ladder main body and the bracket, so that the structural strength and rigidity of the hinged end of the ladder main body and the bracket are enhanced, the hinged end of the ladder main body and the bracket is prevented from being deformed and damaged when the ladder main body rotates, the reliability is improved, and the service life of the turnover ladder is prolonged.

Description

Technical Field

[0001] The utility model relates to a ladder, in particular to a flip ladder. Further, the utility model relates to an excavator. Background Art

[0002] Compared with medium and large excavators that are only equipped with footrests for boarding, since the height difference between the turntable and the bottom surface of the super-large excavator is more than two meters, it is necessary to install an inclined ladder with guardrails on both sides on the super-large excavator.

[0003] In order to prevent the inclined ladder from affecting the driving and working of the excavator, the inclined ladder is generally recovered by flipping or sliding. The sliding inclined ladder in the prior art has a large inclination angle, which makes it inconvenient for the operator to get on the machine and is not conducive to the operator to carry materials for maintenance and repair of the whole machine. The inclined ladder of the flip inclined ladder is heavy, which makes it easy for the flip inclined ladder to fatigue and damage during the recovery process, resulting in low reliability and short service life.

[0004] In view of this, it is necessary to design a flip ladder that can overcome the above technical difficulties and effectively solve or alleviate the above technical defects. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a flip ladder, which has the advantages of comfortable boarding, long service life and high reliability.

[0006] Furthermore, the technical problem to be solved by the utility model is to provide an excavator, the flip ladder of the excavator allows operators to board the excavator comfortably, and has a long service life and high reliability.

[0007] In order to solve the above technical problems, the utility model provides a flip ladder, which includes: a ladder body; a bracket, one end of the bracket is hinged to the ladder body, and the other end of the bracket is formed with a detachable connection structure for connecting a fixing part; a reinforcement structure arranged at the hinged end of the ladder body and the bracket; and a driving mechanism, which is used to drive the ladder body to rotate around its hinged end to retract the ladder body.

[0008] Specifically, the bracket includes a first bracket and a second bracket connected to each other, the detachable connection structure is formed at one end of the first bracket away from the second bracket, and the second bracket is hinged to the ladder body at one end away from the first bracket.

[0009] Preferably, the reinforcement structure includes reinforcement ribs, a plurality of openings for reducing weight are formed on the side of the first bracket, the second bracket is provided with relatively arranged connecting side panels, the ladder body is hinged to the connecting side panels on both sides, and the reinforcement ribs are arranged between the connecting side panels on both sides.

[0010] Preferably, the ladder body is a U-shaped ladder body, and the U-shaped side panels on both sides of the U-shaped ladder body are respectively hinged to the connecting side panels on both sides, and the reinforcement structure includes a reinforcement plate, and the reinforcement plate is provided at the hinge between the U-shaped side panel and the connecting side panel.

[0011] Preferably, a cavity is formed at the bottom of the first bracket.

[0012] Specifically, the bracket further includes a third bracket for mounting the driving mechanism, and a mounting plate for mounting the third bracket is provided at the cavity.

[0013] Specifically, the driving mechanism includes a cylinder and a connecting rod, one of the telescopic end and the fixed end of the cylinder is hinged to the third bracket, and the other is connected to the ladder body through the connecting rod, so as to drive the ladder body to rotate around the hinged end between it and the second bracket by controlling the telescopic end of the cylinder.

[0014] Specifically, it also includes a first position signaler, a second position signaler and a controller, and the controller is communicatively connected to the first position signaler and the second position signaler to control the driving mechanism to drive the rotation angle of the ladder body according to the signals sent by the first position signaler and the second position signaler.

[0015] Preferably, the first position signaler and the second position signaler are respectively arranged on the upper and lower sides of the second bracket, so that the angle between the ladder body and the horizontal plane when it is lowered is 50-60°, and the ladder body is perpendicular to the horizontal plane when it is stored.

[0016] On the basis of the above-mentioned technical solution of the flip ladder, the utility model provides an excavator, which includes the flip ladder described in any of the above-mentioned technical solutions.

[0017] Through the above technical scheme, the flip ladder of the utility model adds a reinforcing structure to the hinged ends of the ladder body and the bracket to improve the overall structural strength. During use, the flip ladder reduces the risk of fatigue and damage to the hinged ends under the action of concentrated pressure. Compared with the sliding ladder, the tilt angle of the ladder body of the flip ladder after lowering is smaller, which makes it more comfortable for operators to board and facilitates the operators to carry materials through the flip ladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a flip ladder according to a specific implementation mode of the utility model;

[0019] Figure 2 It is a structural schematic diagram of a first bracket of a specific implementation mode of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a second bracket of a specific implementation mode of the utility model;

[0021] Figure 4 It is a structural schematic diagram of a third bracket of a specific implementation mode of the utility model;

[0022] Figure 5 It is a schematic diagram of the mechanism of the connecting rod of a specific implementation mode of the utility model;

[0023] Figure 6 It is a structural schematic diagram of a ladder main body according to a specific implementation mode of the utility model;

[0024] Figure 7 It is a schematic diagram of the installation of the first position signal device and the second position signal device of a specific implementation mode of the utility model;

[0025] Figure 8 It is a schematic diagram of the movement of the ladder main body according to a specific implementation mode of the utility model.

[0026] Description of Reference Numerals

[0027] 1 ladder body 2 bracket

[0028] 201 first bracket 202 second bracket

[0029] 203 third bracket 301 reinforcement rib

[0030] 302 reinforcement plate 401 cylinder

[0031] 402 connecting rod 5 opening

[0032] 6 Detachable connection structure 7 Cavity

[0033] 8 Mounting plate 9 First position signaler

[0034] 10 Second position signal device 11 Installation structure DETAILED DESCRIPTION

[0035] The following is a further detailed description of the implementation of the utility model in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the utility model, but cannot be used to limit the scope of the utility model. The utility model can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0036] The utility model provides these embodiments to make the utility model thorough and complete, and fully express the scope of the utility model to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials and the numerical values ​​described in these embodiments should be interpreted as merely exemplary, rather than as limiting.

[0037] It should be noted that, in the description of the present invention, unless otherwise specified, the meaning of "multiple" is greater than or equal to two. The terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0038] In addition, the words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in a strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0039] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0040] All terms used in the present invention have the same meanings as those understood by ordinary technicians in the field to which the present invention belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0041] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0042] like Figure 1As shown, the flip ladder of the utility model includes a ladder body 1, a bracket 2, a reinforcement structure and a driving mechanism. The ladder body 1 and the bracket 2 are hinged. A detachable connecting structure 6 for connecting a fixed part is formed at one end of the bracket 2 away from the ladder body 1. In some embodiments, the fixed part can be a turntable of an excavator, so that the flip ladder is installed on the excavator through the detachable connecting structure 6. The driving mechanism is used to drive the ladder body 1 to rotate around the hinged end between it and the bracket 2 to retract the ladder body 1. The hinged end of the ladder body 1 and the bracket 2 is provided with a reinforcement structure to strengthen the structural strength and rigidity of the hinged end of the ladder body 1 and the bracket 2, so as to avoid damage and fracture of the hinged end of the ladder body 1 and the bracket 2 under the action of the rotation pressure during the rotation of the ladder body 1, thereby improving the safety and reliability of the flip ladder and extending the service life of the flip ladder.

[0043] As a specific implementation method, Figure 1 As shown, the bracket 2 includes a first bracket 201 and a second bracket 202 connected to each other, and a detachable connecting structure 6 for connecting a fixing part is formed at one end of the first bracket 201 away from the second bracket 202, and an end of the second bracket 202 away from the first bracket 201 is hinged to the ladder body 1.

[0044] As a preferred embodiment, Figure 2 and Figure 3 As shown, the reinforcement structure includes reinforcement ribs 301, and a plurality of openings 5 ​​for reducing weight are formed on the side of the first bracket 201. By opening a plurality of openings 5 ​​on the side of the first bracket 201, the weight of the flip ladder is reduced while ensuring the structural strength and rigidity of the bracket 1. The second bracket 202 is provided with relatively arranged connecting side panels. The connecting side panels of this embodiment are both formed with pin holes at one end away from the first bracket 201 to cooperate with the pins so that the ladder body 1 is hinged with the connecting side panels on both sides. Reinforcement ribs 301 are provided between the connecting side panels on both sides to improve the structural strength and rigidity of the second bracket 202 and prevent the second bracket 202 from being damaged by force deformation during the rotation of the ladder body 1.

[0045] As a preferred embodiment, Figure 6 As shown, the ladder body 1 is a U-shaped ladder body. The U-shaped ladder body has high structural strength and light weight, thereby reducing the pressure when the ladder body 1 rotates. Pin holes are formed on both sides of the U-shaped side panels of the U-shaped ladder body of this embodiment, which are located on both sides and close to one end of the bracket 2, so that they can be hinged with the connecting side panels located on both sides respectively, so as to cooperate with the pins to hinge the ladder body 1 and the bracket 2. The reinforcement structure includes a reinforcement plate 302. The reinforcement plate 302 is provided at the hinge between the U-shaped side panel and the connecting side panel, that is, at the position of the pin hole, so as to strengthen the structural strength and rigidity of the hinged end of the ladder body 1 and the bracket 2, and prevent the ladder body 1 from being damaged by force deformation during its rotation.

[0046] As a preferred embodiment, Figure 2 As shown, a cavity 7 is formed at the bottom of the first bracket 201 to further reduce the weight of the first bracket 201 .

[0047] As a specific implementation method, Figure 1 , Figure 2 and Figure 4 As shown, the bracket 2 also includes a third bracket 203 for mounting the driving mechanism, and a mounting plate 8 for mounting the third bracket 203 is provided at the cavity 7. In this embodiment, an opening 5 for weight reduction is also formed on the mounting plate 8.

[0048] As a specific implementation, the driving mechanism includes a cylinder 401 and a connecting rod 402. One of the telescopic end and the fixed end of the cylinder 401 is hinged to the third bracket 203, and the other is connected to the ladder body 1 through the connecting rod 402. Figure 1 , Figure 5 and Figure 7 As shown in the specific embodiment, the fixed end of the cylinder 401 is hinged to the third bracket 203, and the telescopic end of the cylinder 401 is connected to the ladder body 1 through the connecting rod 402, so as to drive the ladder body 1 to rotate around the hinged end between it and the second bracket 202 by controlling the telescopic movement of the cylinder 401.

[0049] As a specific implementation method, Figure 7 As shown, the flip ladder of the utility model also includes a first position signaler 9, a second position signaler 10 and a controller. The controller is communicatively connected to the first position signaler 9 and the second position signaler 10 to control the driving mechanism to drive the ladder body 1 to rotate within a set rotation angle range according to the signals sent by the first position signaler 9 and the second position signaler 10, thereby realizing the retraction and extension control of the ladder body 1.

[0050] As a preferred embodiment, Figure 7 As shown, the first position signaler 9 and the second position signaler 10 are respectively arranged on the upper and lower sides of the second bracket 202. The first position signaler 9 is used to detect whether the ladder body 1 is stored in place. The ladder body 1 is perpendicular to the horizontal plane when it is stored in place. The second position signaler 10 is used to detect whether the ladder body 1 is lowered in place. The angle between the ladder body 1 and the horizontal plane is 50-60° when it is lowered in place. This angle can improve the comfort and safety of the operator when boarding, and it is convenient for the operator to carry materials through the ladder body 1. Figure 8As shown, the ladder body 1 of this embodiment rotates under the drive of the cylinder 401, wherein, when the ladder body 1 is stored, the ladder body 1 is at the first position signal device 9, so that the ladder body 1 is perpendicular to the horizontal plane, and the controller can send a control signal to control the telescopic end of the cylinder 401 to contract, drive the ladder body 1 to rotate, so that the ladder body 1 is gradually lowered, and when the ladder body 1 reaches the position of the second position signal device 10, the controller receives the lowering signal of the second position signal device 10, and controls the cylinder 401 to stop contracting. At this time, the angle between the ladder body 1 and the horizontal plane is 55°.

[0051] As a preferred embodiment, Figure 1 and Figure 7 As shown, the surfaces of the ladder body 1 and the bracket 2 are formed with mounting structures 11 for accessories, and the accessories may be pedals, handrails, etc. For example, the top of the first bracket 201 is provided with a mounting structure 11 for installing corridor pedals, and the sides of the ladder body 1 and the second bracket 202 are formed with mounting structures 11 for installing handrail brackets, and the handrails are installed on both sides of the ladder body 1 through the handrail brackets.

[0052] On the basis of the flip ladder mentioned in the above technical solution of the utility model, the utility model further provides an excavator, which includes the flip ladder mentioned in the present application, so that the operator can board the machine more comfortably, which is convenient for the operator to carry materials for maintenance and repair of the whole machine, and the flip ladder of the excavator has a long service life and is more reliable.

[0053] From the above description, it can be seen that the advantages of the utility model are that, first, the ladder body of the utility model is a U-shaped ladder body, which is light in weight while ensuring structural strength, thereby reducing the stress at the hinged end of the ladder body and the bracket; second, the hinged end of the ladder body and the bracket of the utility model is provided with a reinforcement structure to strengthen the structural strength of the hinged end of the ladder body and the bracket, thereby avoiding damage to the ladder body when rotating and extending the service life; third, openings are provided in multiple places of the bracket, so that the overall weight of the flip ladder is lighter; fourth, the utility model optimizes the structure of the flip ladder, and the optimized flip ladder has higher structural strength and rigidity while achieving lightweight; fifth, after the flip ladder of the utility model is lowered, the angle between the ladder body and the horizontal plane makes the operator's boarding comfort higher, which is convenient for the operator to carry materials for maintenance and repair of the whole machine through the flip ladder.

[0054] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0055] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0056] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A flip ladder, characterized in that: include: Ladder body (1); A bracket (2), one end of the bracket (2) being hinged to the ladder body (1), and the other end of the bracket (2) being formed with a detachable connection structure (6) for connecting to a fixing part; A reinforcing structure provided at the hinged end of the ladder body (1) and the bracket (2); A driving mechanism, wherein the driving mechanism is used to drive the ladder body (1) to rotate around its hinged end so as to retract and release the ladder body (1).

2. The flip ladder according to claim 1, characterized in that: The bracket (2) comprises a first bracket (201) and a second bracket (202) which are connected to each other, the detachable connection structure (6) is formed at one end of the first bracket (201) away from the second bracket (202), and the end of the second bracket (202) away from the first bracket (201) is hinged to the ladder body (1).

3. The flip ladder according to claim 2, characterized in that: The reinforcement structure comprises reinforcement ribs (301), a plurality of openings (5) for reducing weight are formed on the side of the first bracket (201), the second bracket (202) is provided with connecting side panels arranged opposite to each other, the ladder body (1) is hinged to the connecting side panels located on both sides, and the reinforcement ribs (301) are arranged between the connecting side panels on both sides.

4. The flip ladder according to claim 3, characterized in that: The ladder body (1) is a U-shaped ladder body, the U-shaped side panels on both sides of the U-shaped ladder body are respectively hinged to the connecting side panels on both sides, the reinforcement structure comprises a reinforcement plate (302), and the reinforcement plate (302) is provided at the hinge between the U-shaped side panel and the connecting side panel.

5. The flip ladder according to claim 2, characterized in that: A cavity (7) is formed at the bottom of the first bracket (201).

6. The flip ladder according to claim 5, characterized in that: The bracket (2) further comprises a third bracket (203) for mounting the driving mechanism, and a mounting plate (8) for mounting the third bracket (203) is provided at the cavity (7).

7. The flip ladder according to claim 6, characterized in that: The driving mechanism comprises an oil cylinder (401) and a connecting rod (402); one of the telescopic end and the fixed end of the oil cylinder (401) is hinged to the third bracket (203), and the other is connected to the ladder body (1) through the connecting rod (402), so as to drive the ladder body (1) to rotate around the hinged end thereof and the second bracket (202) by controlling the telescopic movement of the oil cylinder (401).

8. The tilting ladder according to any one of claims 2 to 7, characterized in that: The ladder body (1) further comprises a first position signaler (9), a second position signaler (10) and a controller, wherein the controller is communicatively connected to the first position signaler (9) and the second position signaler (10) so as to control the driving mechanism to drive the rotation angle of the ladder body (1) according to the signals sent by the first position signaler (9) and the second position signaler (10).

9. The flip ladder according to claim 8, characterized in that: The first position signaler (9) and the second position signaler (10) are respectively arranged on the upper and lower sides of the second bracket (202), so that the angle between the ladder body (1) and the horizontal plane when it is lowered is 50-60 degrees, and the ladder body (1) is perpendicular to the horizontal plane when it is stored.

10. An excavator, characterized in that: The invention comprises the flip ladder as claimed in any one of claims 1 to 9.

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