Cross-shaped limiting stopper of hoisting equipment

Abstract

The utility model discloses a cross-shaped limiting stopper of hoisting equipment, and belongs to the technical field of limiting stoppers. A cross-shaped limiting stopper of hoisting equipment comprises a shell and a front end cover of the cross-shaped limiting stopper, the front end cover and the shell are detachably connected, a limiting switch and a connector bar are fixedly arranged on the inner end face of the front end cover, and the limiting switch and the connector bar are connected through a lead. The bottom of the front end cover and the bottom of the shell are provided with outgoing line limiting structures, the bottom of the line bank is provided with a plurality of wiring holes, the number of the wiring holes is the same as that of wiring points of the limiting switch, and the wiring holes and the wiring points are in one-to-one correspondence. According to the utility model, through the arrangement of the connector bar, wiring is more convenient, wire arrangement and arrangement are facilitated, rapid installation is facilitated, and combination of the front end cover and the housing is more convenient, so that the problem that wire arrangement and arrangement are inconvenient during installation of the cross-shaped limiter in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of limiters, in particular to a cross limiter for lifting equipment. Background Art

[0002] The function of the cross limiter is to protect the safety of the machine and its users and prevent accidents caused by mechanical movement beyond the limit. In equipment such as cranes and tower cranes, the cross limiter can limit the rotation range of the crane arm, the lifting height of the hook, the travel range of the crane, etc., thereby ensuring the safe operation of the equipment.

[0003] The cross limiter in the prior art usually consists of a rotating cross rod and a fixed contact. When the cross rod rotates to a certain angle, the contact will trigger the limit switch, thereby cutting off the power supply or sounding an alarm to prevent the mechanical movement from exceeding the safety range. However, the wiring position of the limit switch of the cross limiter in the prior art is generally directly set around the shell of the limit switch, so the wiring position is relatively messy and it is not convenient to combine the front and rear end covers together after wiring. In addition, the wires need to be passed through the wire outlet holes in advance during wiring, which leads to some restrictions during wiring. Therefore, improvements are needed. Utility Model Content

[0004] The utility model aims to solve the problem that the cross limiter in the prior art is inconvenient for cable arrangement during installation, and proposes a cross limiter for lifting equipment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A cross limiter for lifting equipment comprises a shell and a front end cover of the cross limiter, wherein the front end cover and the shell are detachably connected, a limit switch and a terminal block are fixedly arranged on the inner end surface of the front end cover, the limit switch and the terminal block are connected by a lead wire, and an outlet line limit structure is arranged at the bottom of the front end cover and the shell.

[0007] Preferably, a plurality of wiring holes are provided at the bottom of the wiring row, and the number of the wiring holes is the same as the number of wiring points of the limit switch and corresponds one to one.

[0008] Preferably, a front bottom plate is fixedly provided at the bottom of the front end cover, a groove is provided on one end of the front bottom plate close to the shell, and a groove is also provided on one end of the shell bottom plate of the shell close to the front end cover.

[0009] Preferably, the line limiting structure comprises a fixed clamp block and a movable clamp block, the fixed clamp block is fixedly arranged in a groove on the front bottom plate, the movable clamp block is slidably arranged in a groove on the bottom plate of the shell, and an elastic mechanism is arranged between the movable clamp block and the shell.

[0010] Preferably, the elastic mechanism includes an elastic sheet, a baffle and a guide rail, the baffle is fixedly arranged on the rear end face of the movable clamp block, the guide rail is fixedly arranged on the upper surface of the bottom plate of the shell, the baffle is slidably arranged in the guide rail, one end of the elastic sheet is fixedly connected to the movable clamp block, and the other end is fixedly connected to the rear end face of the shell.

[0011] Compared with the prior art, the utility model provides a cross limiter for lifting equipment, which has the following beneficial effects.

[0012] 1. The utility model, through the provision of the wiring row, can make wiring more convenient, facilitate the wiring arrangement, facilitate quick installation, and make it more convenient to combine the front cover and the shell, thereby solving the problem in the prior art that the cross limiter is not convenient for wiring arrangement during installation.

[0013] 2. The utility model provides grooves on the front bottom plate and the bottom plate of the shell, so that the front end cover and the shell can be used as a wiring hole after being combined together, and is not restricted by traditional wiring holes during wiring, thereby achieving convenient and fast wiring operations.

[0014] 3. The utility model can limit the cable by setting the outlet limit structure, so as to reduce the shaking of the cable in the outlet hole, thereby improving the stability of the wiring position.

[0015] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the front end cover in the utility model.

[0019] Figure 4 It is a structural schematic diagram of the front end cover in the utility model.

[0020] Figure 5 It is a structural schematic diagram of the shell in the utility model.

[0021] Figure 6 It is a schematic diagram of the disassembled structure of the shell in the utility model.

[0022] In the figure:

[0023] 1. Shell; 2. Front cover; 3. Front bottom plate; 4. Shell bottom plate; 5. Movable clamp block; 6. Fixed clamp block; 7. Limit switch; 8. Lead wire; 9. Terminal block; 10. Wiring hole; 11. Elastic sheet; 12. Guide rail; 13. Baffle. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-6 A cross limiter for lifting equipment includes a shell 1 and a front cover 2 of the cross limiter. The front cover 2 and the shell 1 are detachably connected. A limit switch 7 and a terminal block 9 are fixedly arranged on the inner end surface of the front cover 2. The limit switch 7 and the terminal block 9 are connected by a lead wire 8. An outlet limit structure is arranged at the bottom of the front cover 2 and the shell 1.

[0026] In a specific embodiment of the utility model, by setting the wiring method of the terminal block 9, it can be more convenient than the traditional wiring directly on the limit switch 7. At the same time, the cables are not easy to be messy during wiring, which is more conducive to wire management and wiring, and is convenient for the later connection between the front end cover 2 and the shell 1, so as to achieve the effect of quick installation; by setting the outlet line limit structure, the cable can be limited to reduce the shaking of the cable, thereby avoiding the shaking of the wiring position, making the wiring more stable.

[0027] A plurality of wiring holes 10 are provided at the bottom of the wiring row 9 , and the number of the wiring holes 10 is the same as the number of the wiring points of the limit switch 7 , and they correspond one to one.

[0028] In the present solution, taking the two-speed limit switch 7 as an example, it has eight wiring points, so there are also eight wiring holes 10 on the wiring row 9, each wiring hole 10 corresponds to a wiring point, and the two are electrically connected through the lead 8, that is, the two ends of the lead 8 are respectively fixedly connected to the corresponding wiring point and the wiring hole 10; when wiring, the corresponding cable is inserted into the corresponding wiring hole 10, and then squeezed and fixed with bolts (this fixing method is similar to the existing conventional wiring method, such as the wiring method of the air switch), and the wiring can be completed.

[0029] A front bottom plate 3 is fixedly provided at the bottom of the front end cover 2 . A groove is formed on one end of the front bottom plate 3 close to the shell 1 . A groove is also formed on one end of the shell bottom plate 4 of the shell 1 close to the front end cover 2 .

[0030] The opening of the groove on the front bottom plate 3 is in an outward-expanding figure eight shape. This arrangement allows the cable to be directly placed in the groove from here after the wiring is completed. Then, when the front end cover 2 is installed on the shell 1, there will be no messy cables affecting the docking of the front end cover 2 and the shell 1. After the docking of the front end cover 2 and the shell 1 is completed, the groove on the front bottom plate 3 and the groove on the shell bottom plate 4 can jointly form a wire outlet hole. The arrangement of the wire outlet hole in this scheme does not require the cable to be passed through the wire outlet hole in advance when wiring, which facilitates the wiring work and avoids being restricted by the influence of the wire outlet hole during wiring, thereby achieving the effect of quick installation.

[0031] The line limiting structure includes a fixed clamp block 6 and a movable clamp block 5. The fixed clamp block 6 is fixedly arranged in a groove on the front bottom plate 3, and the movable clamp block 5 is slidably arranged in a groove of the shell bottom plate 4. An elastic mechanism is arranged between the movable clamp block 5 and the shell 1.

[0032] By using the elastic mechanism to push the movable clamp block 5, the cable can be clamped, making it difficult for the cable to shake, thereby achieving a more stable wiring position. This arrangement does not add additional operations when installing the cross limiter. After the wiring is completed, the cable only needs to be placed in the groove on the front bottom plate 3, that is, the cable is placed against the fixed clamp block 6. Then, when the front end cover 2 and the shell 1 are connected, the cable will be blocked by the movable clamp block 5. Then, under the action of the elastic mechanism, the movable clamp block 5 and the fixed clamp block 6 jointly clamp the cable, thereby limiting the cable and making it difficult to shake.

[0033] The elastic mechanism includes an elastic sheet 11, a baffle 13 and a guide rail 12. The baffle 13 is fixedly arranged on the rear end surface of the movable clamp 5, and the guide rail 12 is fixedly arranged on the upper surface of the shell bottom plate 4. The baffle 13 is slidably arranged in the guide rail 12. One end of the elastic sheet 11 is fixedly connected to the movable clamp 5, and the other end is fixedly connected to the rear end surface of the shell 1. Under the elastic force of the elastic sheet 11, a force can be applied to the movable clamp 5 in the direction of the front end cover 2 to achieve the function of clamping the cable. This setting can not only quickly limit the cable, but also adapt to cables of different sizes; the baffle 13 can be used to close a portion of the groove on the shell bottom plate 4 to fill the gap between the movable clamp 5 and the groove.

[0034] Installation process: first disassemble the front end cover 2 and the shell 1, and then connect each cable to the wiring hole 10 on the corresponding wiring row 9. When wiring, insert the corresponding cable into the corresponding wiring hole 10, and then use bolts to tighten and fix it. After wiring is completed, send the cable into the groove on the front bottom plate 3, so that the cable rests on the fixed clamp 6, and then dock the front end cover 2 with the shell 1. During docking, the cable will also enter the groove on the bottom plate 4 of the shell, and then be blocked by the movable clamp 5. Since the thrust of the movable clamp 5 is provided by the elastic sheet 11, the movable clamp 5 will move adaptively, and the movable clamp 5 will always apply pressure to the cable. After the front end cover 2 and the shell 1 are docked, use screws to fix the two. At this time, the movable clamp 5 will also cooperate with the fixed clamp 6 to limit the cable to a certain extent to reduce the shaking of the cable. After the above steps are completed, the shell 1 is installed to the appropriate position on the equipment to be used to complete the installation of the cross limiter.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0037] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A cross stopper for lifting equipment, comprising a housing (1) and a front end cover (2) of the cross stopper, characterized in that: The front end cover (2) and the housing (1) are detachably connected, a limit switch (7) and a wiring block (9) are fixedly arranged on the inner end surface of the front end cover (2), the limit switch (7) and the wiring block (9) are connected via a lead wire (8), and a wire outlet limit structure is arranged at the bottom of the front end cover (2) and the housing (1).

2. A lifting equipment cross limiter according to claim 1, characterized in that: A plurality of wiring holes (10) are provided at the bottom of the wiring row (9), and the number of the wiring holes (10) is the same as the number of wiring points of the limit switch (7), and they correspond one to one.

3. A lifting equipment cross limiter according to claim 1, characterized in that: A front bottom plate (3) is fixedly provided at the bottom of the front end cover (2), a groove is provided on one end of the front bottom plate (3) close to the shell (1), and a groove is also provided on one end of the shell bottom plate (4) of the shell (1) close to the front end cover (2).

4. A lifting equipment cross limiter according to claim 3, characterized in that: The outlet line limiting structure comprises a fixed clamping block (6) and a movable clamping block (5); the fixed clamping block (6) is fixedly arranged in a groove on the front bottom plate (3); the movable clamping block (5) is slidably arranged in a groove on the shell bottom plate (4); and an elastic mechanism is arranged between the movable clamping block (5) and the shell (1).

5. A lifting equipment cross limiter according to claim 4, characterized in that: The elastic mechanism comprises an elastic sheet (11), a baffle (13) and a guide rail (12); the baffle (13) is fixedly arranged on the rear end surface of the movable clamping block (5); the guide rail (12) is fixedly arranged on the upper surface of the shell bottom plate (4); the baffle (13) is slidably arranged in the guide rail (12); one end of the elastic sheet (11) is fixedly connected to the movable clamping block (5); and the other end is fixedly connected to the rear end surface of the shell (1).

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