Limiting device of construction hoist

Abstract

The utility model discloses a limiting device of a construction hoist, which belongs to the technical field of construction hoists and is characterized in that an upper stroke limiting feeler lever and an upper limit limiting feeler lever can be integrally and fixedly mounted on a guide rail bracket through an upper fixing plate by arranging an integrated fixing plate; the lower stroke limiting feeler lever and the lower limit limiting feeler lever can be integrally and fixedly installed on the guide rail frame through the lower fixing plate and do not need to be separately and independently installed, the installation process is simplified, and the installation efficiency is improved; moreover, the upper stroke limiting collision block, the upper limit limiting collision block, the lower stroke limiting collision block and the lower limit limiting collision block are all designed into rod pieces, the rod pieces are fixed in the limiting sleeves in a penetrating mode through the adjusting holes, a corresponding limiting feeler lever is arranged in each limiting sleeve, and a plurality of adjusting holes are formed in the side wall of each feeler lever. And the limiting feeler lever has a similar contraction effect in the limiting sleeve, so that the height of the limiting feeler lever can be flexibly adjusted to adapt to construction hoists of different models.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction elevators, and in particular relates to a construction elevator limiting device. Background Art

[0002] Construction elevators are also called construction elevators for buildings, outdoor elevators, and construction site hoist cages. They are manned and cargo-carrying construction machinery that is often used in construction. They are mainly used for the interior and exterior decoration of high-rise buildings, bridges, chimneys and other construction projects. Due to its unique box structure, construction workers can ride comfortably and safely. Construction elevators are usually used in conjunction with tower cranes on construction sites.

[0003] An upper limit limit structure and a lower limit limit structure should be set at the upper and lower ends of the construction hoist travel respectively, so as to cut off the power supply and stop the cage before the cage contacts other mechanical stopping devices (such as buffers). The limit limit structure directly contacts the cage or its related parts to trigger the corresponding circuit to stop the cage. In addition, the construction hoist should be equipped with an upper travel limit structure and a lower travel limit structure, wherein the upper travel limit structure should enable the cage running at the rated speed to stop automatically before contacting the upper limit structure, and the lower travel limit structure should enable the cage running at the rated speed to stop automatically before contacting the lower limit structure.

[0004] Traditionally, the technical solution of fixing the travel limit structure and the limit limit structure on the standard section of the construction elevator through a fixed plate, but the traditional upper travel limit structure and the upper limit limit structure are separately set with a fixed plate, and the traditional travel limit structure is a block structure. By setting a plurality of fixing holes on the fixed plate, the travel limit structure and the limit limit structure can select a suitable fixing hole to be fixed to the corresponding fixed plate, which plays a role in adjusting the installation height of the travel limit structure and the limit limit structure on the corresponding fixed plate. The disadvantage of the solution of setting a fixed plate separately is that it is necessary to wait for the previous limit structure to be installed before the next limit structure can be installed. For example, for the upper travel limit and the upper limit limit, it is necessary to wait for the upper limit limit structure to be installed and determine the position before the upper travel limit structure can be installed, which increases the installation time and reduces the efficiency. Moreover, because the traditional travel limit structure and the limit limit structure are block structures, the number of fixing holes on the fixed plate is also relatively limited, so the range of adjustment of the travel limit structure and the limit limit structure on the fixed plate is relatively small.

[0005] Based on different safety concepts, the limit structure will have different design methods. For example, the Chinese patent with publication number CN205170096 U discloses a construction elevator limit device, including a guide rail frame, a limit device, and the limit device includes an upper travel limit bumper and a lower travel limit bumper. The upper travel limit bumper is a rod, and at least one adjustment through hole is provided on the upper travel limit bumper. The adjustment through hole on the upper travel limit bumper is fixed to the guide rail frame through a bolt and a nut. An upper limit bumper is provided on one side of the upper travel limit bumper, and an upper limit switch is provided below the upper limit bumper. The lower travel limit bumper is fixedly installed on the guide rail frame, and a lower limit bumper is provided on one side below the lower travel limit bumper, and a lower limit switch is provided above the lower travel limit bumper. The upper and lower limit bumpers are provided to ensure that the cage will immediately cut off the power supply if it continues to run due to the failure of the upper and lower limit switches after running to the upper and lower travel limit bumpers, so that the cage will stop, ensuring that the cage will not burst when running upward and will not hit the bottom when running downward. The device is easy to install, maintain, repair and manage.

[0006] For another example, a Chinese patent with publication number CN 214003911 U discloses a lift limit device, in which an upper stroke limit bumper is fixedly provided on the upper side wall of a guide rail frame, the upper stroke limit bumper is a rod, an inner side wall of the upper stroke limit bumper is fixedly provided with an adjustment through hole, the upper stroke limit bumper is threadedly connected to the guide rail frame via the adjustment through hole, an upper limit bumper is fixedly provided on the right side wall of the upper stroke limit bumper, and an upper limit switch is fixedly provided below the upper limit bumper.

[0007] For another example, a Chinese patent with publication number CN 108190691 A discloses a method for installing an elevator, including limit bumps arranged at the top and bottom of the cage, limit switches arranged at the top and bottom of the guide rail frame and cooperating with the corresponding limit bumps, and the limit switches are connected to a controller.

[0008] In the technical solutions of the Chinese patents with publication numbers CN 205170096 U and CN 214003911 U, the upper limit bumper is a rod, and an adjustment hole is provided on the rod, through which the installation height of the upper limit bumper can be adjusted, but the upper limit bumper is fixedly installed on the upper limit bumper, and the relative installation height between the upper limit bumper and the upper limit bumper is fixed. However, different hoist cages have different requirements for the relative installation height difference between the upper limit bumper and the upper limit bumper, so the technical solutions disclosed in the Chinese patents with publication numbers CN 205170096 U and CN 214003911 U are not suitable for construction hoists of different models. If they are to be applied to construction hoists of different models, because there is no separate installation height adjustment structure for the upper limit bumper, the relative installation height difference between the upper limit bumper and the upper limit bumper is inconvenient to adjust. Similarly, although the above-mentioned Chinese patent with publication number CN 108190691A solves some potential safety hazards of construction elevators, it does not involve the problem of adjusting the installation height of the upper limit bumper and the upper limit bumper. Utility Model Content

[0009] In view of this, the utility model provides a construction elevator limit device, which solves the technical problems of low installation efficiency and limited installation height adjustment range of traditional limit structures by arranging an integrated fixing plate and a retractable limit touch rod.

[0010] The utility model adopts the following technical solutions:

[0011] A construction hoist limit device comprises a guide rail frame, an upper fixed plate, an upper travel limit sleeve, an upper travel limit touch rod, an upper limit limit sleeve, an upper limit limit touch rod, a lower fixed plate, a lower travel limit sleeve, a lower travel limit touch rod, an upper limit limit sleeve and an upper limit limit touch rod;

[0012] The upper fixing plate and the lower fixing plate are both fixed on the guide rail frame;

[0013] The upper travel limit sleeve and the upper limit limit sleeve are both fixedly mounted on the upper fixed plate;

[0014] The lower travel limit sleeve and the lower limit limit sleeve are both fixedly mounted on the lower fixed plate;

[0015] A plurality of adjustment holes are arranged on the side wall of the upper travel limit contact rod, and the upper travel limit contact rod is fixed in the upper travel limit sleeve by passing bolts through the adjustment holes;

[0016] A plurality of adjustment holes are arranged on the side wall of the upper limit stop contact rod, and the upper limit stop contact rod is fixed in the upper limit stop sleeve by bolts passing through the adjustment holes;

[0017] A plurality of adjustment holes are arranged on the side wall of the lower travel limit contact rod, and the lower travel limit contact rod is fixed in the lower travel limit sleeve by passing bolts through the adjustment holes;

[0018] A plurality of adjustment holes are arranged on the side wall of the lower limit position contact rod, and the lower limit position contact rod is fixed in the lower limit position contact sleeve by bolts passing through the adjustment holes.

[0019] Furthermore, nuts are fixed on the side walls of the upper travel limit sleeve, the upper limit limit sleeve, the lower travel limit sleeve and the lower limit limit sleeve;

[0020] The bolt fixing the upper travel limit contact rod is threadedly connected to a nut fixed on the side wall of the upper travel limit sleeve and passes through an adjustment hole on the side wall of the upper travel limit contact rod;

[0021] The bolt fixing the upper limit stop contact rod is threadedly connected to a nut fixed on the side wall of the upper limit stop sleeve and passes through an adjustment hole on the side wall of the upper limit stop contact rod;

[0022] The bolt fixing the lower travel limit contact rod is threadedly connected to a nut fixed on the side wall of the lower travel limit sleeve and passes through an adjustment hole on the side wall of the upper travel limit contact rod;

[0023] The fixed bolt is threadedly connected with a nut fixed on the side wall of the lower limit limiting sleeve and passes through an adjustment hole on the side wall of the lower limit limiting contact rod.

[0024] Furthermore, the upper travel limit contact rod, the upper limit limit contact rod, the lower travel limit contact rod, and the lower limit limit contact rod are all hollow tubular structures;

[0025] The bolt passes through the adjustment holes on the side walls of the upper travel limit touch rod, the upper limit limit touch rod, the lower travel limit touch rod and the lower limit limit touch rod, and then squeezes and fixes the side walls of the upper travel limit touch rod, the upper limit limit touch rod, the lower travel limit touch rod and the lower limit limit touch rod opposite to the adjustment holes.

[0026] Furthermore, the upper travel limit contact rod, the upper limit limit contact rod, the lower travel limit contact rod, and the lower limit limit contact rod are all square tubes;

[0027] The upper travel limit sleeve, the upper limit limit sleeve, the lower travel limit sleeve, and the lower limit limit sleeve are all square tubes.

[0028] Furthermore, the upper fixing plate and the lower fixing plate are both fixedly mounted on the guide rail frame by U-shaped wires;

[0029] The upper travel limit sleeve and the upper limit limit sleeve are both fixed on the upper fixed plate by welding;

[0030] The lower travel limit sleeve and the lower limit limit sleeve are both fixed on the lower fixed plate by welding.

[0031] Beneficial effects:

[0032] 1. The construction elevator limit device provided by the utility model comprises a guide rail frame, an upper fixed plate, an upper travel limit sleeve, an upper travel limit touch rod, an upper limit limit sleeve, an upper limit limit touch rod, a lower fixed plate, a lower travel limit sleeve, a lower travel limit touch rod, an upper limit limit sleeve and an upper limit limit touch rod; the upper fixed plate and the lower fixed plate are both fixedly arranged on the guide rail frame; the upper travel limit sleeve and the upper limit limit sleeve are both fixedly arranged on the upper fixed plate; the lower travel limit sleeve and the lower limit limit sleeve are both fixedly arranged on the lower fixed plate; a plurality of An adjustment hole is provided on the side wall of the upper limit limit contact rod, and the upper limit limit contact rod is fixed in the upper limit limit sleeve by passing through the adjustment hole by bolts; a plurality of adjustment holes are provided on the side wall of the lower limit limit contact rod, and the lower limit limit contact rod is fixed in the lower limit limit sleeve by passing through the adjustment hole by bolts; a plurality of adjustment holes are provided on the side wall of the lower limit limit contact rod, and the lower limit limit contact rod is fixed in the lower limit limit sleeve by passing through the adjustment hole by bolts.

[0033] In this way, by providing an integrated fixing plate (an upper fixing plate and a lower fixing plate), the upper travel limit touch rod and the upper limit limit touch rod can be fixedly installed on the guide rail frame as a whole through the upper fixing plate, and the lower travel limit touch rod and the lower limit limit touch rod can be fixedly installed on the guide rail frame as a whole through the lower fixing plate, without the need to install them separately, thereby simplifying the installation process and improving the installation efficiency; moreover, the upper travel limit bumper, the upper limit bumper, the lower travel limit bumper and the lower limit bumper are all designed as rods, and the rods are adjusted The node hole is passed through and fixed in the limit sleeve, and each limit sleeve is provided with a corresponding limit touch rod (upper travel limit touch rod, upper limit limit touch rod, lower travel limit touch rod, lower limit limit touch rod), and a plurality of adjustment holes are provided on the side wall of the touch rod, so that the limit touch rod has a similar contraction effect in the limit sleeve, so that the height of the limit touch rod can be flexibly adjusted, and the relative installation height difference between the travel limit rod and the limit limit rod can be flexibly adjusted to adapt to different models of construction elevators, and increase the range of installation height adjustment and the flexibility of adjustment.

[0034] 2. Nuts are fixed on the side walls of the upper travel limit sleeve, the upper limit limit sleeve, the lower travel limit sleeve and the lower limit limit sleeve; the bolt for fixing the upper travel limit contact rod is threadedly connected with the nut fixed on the side wall of the upper travel limit sleeve and passes through the adjustment hole on the side wall of the upper travel limit contact rod; the bolt for fixing the upper limit limit contact rod is threadedly connected with the nut fixed on the side wall of the upper limit limit sleeve and passes through the adjustment hole on the side wall of the upper limit limit contact rod; the bolt for fixing the lower travel limit contact rod is threadedly connected with the nut fixed on the side wall of the lower travel limit sleeve and passes through the adjustment hole on the side wall of the lower travel limit contact rod; the bolt for fixing the lower limit limit contact rod is threadedly connected with the nut fixed on the side wall of the lower limit limit sleeve and passes through the adjustment hole on the side wall of the lower limit limit contact rod.

[0035] In this way, by fixing a nut on the side wall of the limit sleeve and allowing the bolt to pass through the adjustment hole on the side wall of the limit contact rod and be threadedly connected to the nut, a simple and reliable fixing method is provided, which facilitates the installation and adjustment of the limit contact rod.

[0036] 3. The upper travel limit touch rod, the upper limit limit touch rod, the lower travel limit touch rod and the lower limit limit touch rod are all hollow tubular structures; the bolts pass through the adjustment holes on the side walls of the upper travel limit touch rod, the upper limit limit touch rod, the lower travel limit touch rod and the lower limit limit touch rod, and then squeeze and fix the side walls of the upper travel limit touch rod, the upper limit limit touch rod, the lower travel limit touch rod and the lower limit limit touch rod opposite to the adjustment holes.

[0037] In this way, the limit touch rod adopts a hollow tubular structure, which makes the structure lighter. At the same time, when the bolt passes through the adjustment hole, the side wall of the limit touch rod can be squeezed and fixed, so that the side wall of the limit touch rod is tightly attached to the side wall of the limit sleeve, ensuring the good verticality of the limit touch rod.

[0038] 4. The upper travel limit touch rod, upper limit limit touch rod, lower travel limit touch rod and lower limit limit touch rod are all square tubes;

[0039] The upper travel limit sleeve, the upper limit limit sleeve, the lower travel limit sleeve and the lower limit limit sleeve are all square tubes.

[0040] In this way, the side walls of the limit contact rod and the limit sleeve that are in close contact with each other are plane walls, which can ensure a better close contact effect and better ensure the verticality of the limit contact rod.

[0041] 5. The upper fixed plate and the lower fixed plate are fixed to the guide rail frame by U-shaped wires; the upper travel limit sleeve and the upper limit limit sleeve are fixed to the upper fixed plate by welding; the lower travel limit sleeve and the lower limit limit sleeve are fixed to the lower fixed plate by welding.

[0042] In this way, the upper fixed plate and the lower fixed plate are fixed to the guide rail frame by U-shaped wires, providing a simple and quick installation method. At the same time, the upper travel limit sleeve and the upper limit limit sleeve, and the lower travel limit sleeve and the lower limit limit sleeve are fixed to the fixed plate by welding, ensuring the firmness and reliability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the installation of a construction hoist limit device provided by the utility model;

[0044] Figure 2 for Figure 1 A schematic diagram of the structure of the limit touch rods (upper travel limit touch rod, upper limit limit touch rod, lower travel limit touch rod, lower limit limit touch rod);

[0045] Among them, 1-guide rail frame, 2-bolt, 3-upper travel limit sleeve, 4-nut, 5-upper travel limit touch rod, 6-upper limit limit sleeve, 7-upper limit limit touch rod, 8-upper fixing plate, 9-adjustment hole. DETAILED DESCRIPTION

[0046] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0047] Reference Figure 1-2 A construction elevator limit device includes a guide rail frame 1, an upper fixed plate 8, an upper travel limit sleeve 3, an upper travel limit touch rod 5, an upper limit limit sleeve 6, an upper limit limit touch rod 7, a lower fixed plate (not shown in the figure), a lower travel limit sleeve (not shown in the figure), a lower travel limit touch rod (not shown in the figure), a lower limit limit sleeve (not shown in the figure) and a lower limit limit touch rod (not shown in the figure), wherein:

[0048] The upper fixed plate 8 and the lower fixed plate are both fixed on the guide rail frame 1; the upper travel limit sleeve 3 and the upper limit limit sleeve 6 are both fixed on the upper fixed plate 8; the lower travel limit sleeve and the lower limit limit sleeve are both fixed on the lower fixed plate; a plurality of adjustment holes 9 are provided on the side wall of the upper travel limit touch rod 5, and the upper travel limit touch rod 5 is fixed in the upper travel limit sleeve 3 by passing the adjustment hole 9 through the bolt 2; a plurality of adjustment holes 9 are provided on the side wall of the upper limit limit touch rod 7, and the upper limit limit touch rod 7 is fixed in the upper limit limit sleeve 6 by passing the adjustment hole 9 through the bolt 2; a plurality of adjustment holes 9 are provided on the side wall of the lower travel limit touch rod, and the lower travel limit touch rod is fixed in the lower travel limit sleeve by passing the adjustment hole 9 through the bolt 2; a plurality of adjustment holes 9 are provided on the side wall of the lower limit limit touch rod, and the lower limit limit touch rod is fixed in the lower limit limit sleeve by passing the adjustment hole 9 through the bolt 2.

[0049] In this way, by providing an integrated fixing plate (upper fixing plate 8 and lower fixing plate), the upper travel limit touch rod 5 and the upper limit limit touch rod 6 can be fixedly installed on the guide rail frame 1 as a whole through the upper fixing plate 8, and the lower travel limit touch rod and the lower limit limit touch rod can be fixedly installed on the guide rail frame 1 as a whole through the lower fixing plate, without the need to be installed separately, thereby simplifying the installation process and improving the installation efficiency; moreover, the upper travel limit bumper, the upper limit bumper, the lower travel limit bumper and the lower limit bumper are all designed as rods, and the rods are connected by The adjustment hole 9 is passed through and fixed in the limit sleeve, and each limit sleeve is provided with a corresponding limit touch rod (upper travel limit touch rod 5, upper limit limit touch rod 6, lower travel limit touch rod, lower limit limit touch rod), and a plurality of adjustment holes 9 are provided on the side wall of the touch rod, so that the limit touch rod has a similar contraction effect in the limit sleeve, so that the height of the limit touch rod can be flexibly adjusted, and the relative installation height difference between the travel limit rod and the limit limit rod can be flexibly adjusted, which is suitable for different types of construction elevators and increases the range of installation height adjustment and the flexibility of adjustment.

[0050] It should be pointed out that, because the upper stroke limit touch rod 5, the upper limit limit touch rod 7, the lower stroke limit touch rod and the lower limit limit touch rod in the present embodiment are only improvements on the traditional limit bumper structure, their working principles are the same as those of the traditional limit bumpers, and they all stop the lifting and lowering movement of the cage by colliding with the corresponding switches on the cage. Therefore, in the present embodiment, "the lower end of the stroke limit touch rod 5 extends from the lower end of the upper stroke limit sleeve 3; the lower end of the upper limit limit touch rod 7 extends from the lower end of the upper limit limit sleeve 6; the upper end of the lower stroke limit touch rod extends from the upper end of the lower stroke limit sleeve; the upper end of the lower limit limit touch rod extends from the upper end of the lower limit limit sleeve, and the height of the lower end of the upper stroke limit touch rod 5 is less than the height of the lower end of the upper limit limit touch rod 7, and the height of the upper end of the lower stroke limit touch rod is greater than the height of the upper end of the lower limit limit touch rod" is self-evident.

[0051] Specifically, in the present embodiment, nuts 4 are fixed on the side walls of the upper travel limit sleeve 3, the upper limit limit sleeve 6, the lower travel limit sleeve and the lower limit limit sleeve; the bolt 2 for fixing the upper travel limit contact rod 5 is threadedly connected with the nut 4 fixed on the side wall of the upper travel limit sleeve 3, and passes through the adjustment hole 9 on the side wall of the upper travel limit contact rod 5; the bolt 2 for fixing the upper limit limit contact rod 7 is threadedly connected with the nut 4 fixed on the side wall of the upper limit limit sleeve 6, and passes through the adjustment hole 9 on the side wall of the upper limit limit contact rod 7; the bolt 2 for fixing the lower travel limit contact rod 5 is threadedly connected with the nut 4 fixed on the side wall of the lower travel limit sleeve 6, and passes through the adjustment hole 9 on the side wall of the lower travel limit contact rod; the bolt 2 for fixing the lower limit limit contact rod is threadedly connected with the nut 4 fixed on the side wall of the lower limit limit sleeve, and passes through the adjustment hole 9 on the side wall of the lower limit limit contact rod.

[0052] In this way, by fixing (such as welding) the nut 4 on the side wall of the limit sleeve and allowing the bolt 2 to pass through the adjustment hole 9 on the side wall of the limit contact rod and threadedly connected with the nut 4, a simple and reliable fixing method is provided, which facilitates the installation and adjustment of the limit contact rod.

[0053] Specifically, in the present embodiment, the upper travel limit touch rod 5, the upper limit limit touch rod 7, the lower travel limit touch rod and the lower limit limit touch rod are all hollow tubular structures; the bolt 2 passes through the adjustment hole 9 on the side walls of the upper travel limit touch rod 3, the upper limit limit touch rod 7, the lower travel limit touch rod and the lower limit limit touch rod, and then squeezes and fixes the side walls of the upper travel limit touch rod 5, the upper limit limit touch rod 7, the lower travel limit touch rod and the lower limit limit touch rod opposite to the adjustment hole 9.

[0054] In this way, the limit touch rod adopts a hollow tubular structure, which makes the structure lighter. At the same time, after the bolt 2 passes through the adjustment hole 9, the side wall of the limit touch rod can be squeezed and fixed, so that the side wall of the limit touch rod is tightly attached to the side wall of the limit sleeve, ensuring the good verticality of the limit touch rod.

[0055] Specifically, in this embodiment, the upper limit stopper rod 5, the lower travel limit stopper rod and the lower limit stopper rod are all square tubes; the upper travel limit sleeve 3, the upper limit stopper sleeve 6, the lower travel limit sleeve and the lower limit stopper sleeve are all square tubes.

[0056] In this way, the side walls of the limit contact rod and the limit sleeve that are in close contact with each other are plane walls, which can ensure a better close contact effect and better ensure the verticality of the limit contact rod.

[0057] More specifically, in this embodiment, the upper fixed plate 8 and the lower fixed plate are both fixedly mounted on the guide rail frame 1 by U-shaped wires; the upper travel limit sleeve 3 and the upper limit limit sleeve 6 are both fixedly mounted on the upper fixed plate 8 by welding; the lower travel limit sleeve and the lower limit limit sleeve are both fixedly mounted on the lower fixed plate by welding.

[0058] In this way, the upper fixed plate 8 and the lower fixed plate are fixedly installed on the guide rail frame 1 by U-shaped wires, providing a simple and quick installation method. At the same time, the upper travel limit sleeve 3 and the upper limit limit sleeve 6, and the lower travel limit sleeve and the lower limit limit sleeve are fixed on the fixed plate by welding, ensuring the firmness and reliability of the structure.

[0059] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A construction hoist limit device, characterized in that: It includes a guide rail frame, an upper fixed plate, an upper travel limit sleeve, an upper travel limit touch rod, an upper limit limit sleeve, an upper limit limit touch rod, a lower fixed plate, a lower travel limit sleeve, a lower travel limit touch rod, a lower limit limit sleeve and a lower limit limit touch rod; The upper fixing plate and the lower fixing plate are both fixed on the guide rail frame; The upper travel limit sleeve and the upper limit limit sleeve are both fixedly mounted on the upper fixed plate; The lower travel limit sleeve and the lower limit limit sleeve are both fixedly mounted on the lower fixed plate; A plurality of adjustment holes are arranged on the side wall of the upper travel limit contact rod, and the upper travel limit contact rod is fixed in the upper travel limit sleeve by passing bolts through the adjustment holes; A plurality of adjustment holes are arranged on the side wall of the upper limit stop contact rod, and the upper limit stop contact rod is fixed in the upper limit stop sleeve by bolts passing through the adjustment holes; A plurality of adjustment holes are arranged on the side wall of the lower travel limit contact rod, and the lower travel limit contact rod is fixed in the lower travel limit sleeve by passing bolts through the adjustment holes; A plurality of adjustment holes are arranged on the side wall of the lower limit position contact rod, and the lower limit position contact rod is fixed in the lower limit position contact sleeve by bolts passing through the adjustment holes.

2. A construction hoist limiting device according to claim 1, characterized in that: Nuts are fixed on the side walls of the upper travel limit sleeve, the upper limit limit sleeve, the lower travel limit sleeve and the lower limit limit sleeve; The bolt fixing the upper travel limit contact rod is threadedly connected to a nut fixed on the side wall of the upper travel limit sleeve and passes through an adjustment hole on the side wall of the upper travel limit contact rod; The bolt fixing the upper limit stop contact rod is threadedly connected to a nut fixed on the side wall of the upper limit stop sleeve and passes through an adjustment hole on the side wall of the upper limit stop contact rod; The bolt fixing the lower travel limit contact rod is threadedly connected to a nut fixed on the side wall of the lower travel limit sleeve and passes through an adjustment hole on the side wall of the lower travel limit contact rod; The bolt for fixing the lower limit position contact rod is threadedly connected with a nut fixed on the side wall of the lower limit position contact sleeve and passes through an adjustment hole on the side wall of the lower limit position contact rod.

3. A construction hoist limiting device according to claim 2, characterized in that: The upper travel limit touch rod, the upper limit limit touch rod, the lower travel limit touch rod, and the lower limit limit touch rod are all hollow tubular structures; The bolt passes through the adjustment holes on the side walls of the upper travel limit touch rod, the upper limit limit touch rod, the lower travel limit touch rod and the lower limit limit touch rod, and then squeezes and fixes the side walls of the upper travel limit touch rod, the upper limit limit touch rod, the lower travel limit touch rod and the lower limit limit touch rod opposite to the adjustment holes.

4. A construction hoist limiting device according to claim 3, characterized in that: The upper travel limit touch rod, the upper limit limit touch rod, the lower travel limit touch rod, and the lower limit limit touch rod are all square tubes; The upper travel limit sleeve, the upper limit limit sleeve, the lower travel limit sleeve, and the lower limit limit sleeve are all square tubes.

5. A construction hoist limiting device according to any one of claims 1 to 4, characterized in that: The upper fixing plate and the lower fixing plate are both fixedly mounted on the guide rail frame by U-shaped wires; The upper travel limit sleeve and the upper limit limit sleeve are both fixed on the upper fixed plate by welding; The lower travel limit sleeve and the lower limit limit sleeve are both fixed on the lower fixed plate by welding.

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