Car frame for large freight elevator

Abstract

The utility model aims to provide the car frame for the large freight elevator, which can adaptively adjust and change the size of the car according to the height size of goods in the vertical direction, so that the goods can be better accommodated, placed, connected and fixed in the goods; therefore, the working adaptability and the running stability of the elevator car are improved. The main structure of the car frame comprises a main body hoisting frame arranged on the outer side and an adjustable inner frame arranged in the main body hoisting frame, and the bottom of the main body hoisting frame and the bottom of the adjustable inner frame are connected and fixed to a bearing platform at the same time. The adjustable inner frame comprises a first frame body and a second frame body; the first frame body is fixedly connected with the bearing platform; the second frame body is movably arranged on the first frame body; the second frame body can ascend and descend relative to the first frame body, and the size of the space, used for containing and placing goods, in the adjustable inner frame is changed.

Description

Technical Field

[0001] The utility model relates to the field of elevator equipment structural components, in particular to a car frame for a large-scale freight elevator. Background Art

[0002] Freight elevators, also known as cargo elevators, are elevators designed specifically for transporting goods, usually accompanied by people, and the lifting type freight elevator is the most common working mode. This type of freight elevator usually has the characteristics of strong load capacity, solid structure and easy operation, so as to adapt to its actual factory scene.

[0003] For example, a freight elevator given in the Chinese utility model patent application document with application number CN201420663119.2 includes a bridge compartment, a bottom plate for placing goods in the bridge compartment, a cavity between the bottom plate and the bottom surface of the bridge compartment, a support column for supporting the bottom plate in the cavity, an ejection assembly on the bottom plate, a hydraulic system for driving the ejection assembly to rise and fall in the cavity, and a pedal for controlling the operation of the hydraulic system on the bottom plate; such a structural design ensures that the wheels of the cart are separated from the bottom plate during transportation, thereby preventing the cart from sliding arbitrarily and affecting the goods. Another example is a freight elevator disclosed in the Chinese utility model patent application document with application number CN202023201343.4, which includes an elevator car, floor doors, a car position confirmation mechanism and a floor door guardrail mechanism arranged on the outside of the floor doors, a passage is formed between the floor door guardrail mechanism and the floor doors, and the floor door guardrail mechanism is used to open or close the passage; wherein, the car position confirmation mechanism includes a photoelectric reflector arranged inside the elevator car and a photoelectric sensor switch arranged on one side of the floor door, the floor door guardrail mechanism includes a guardrail rotatably arranged at one end and a locking mechanism arranged at the other end of the guardrail and used to lock the guardrail, the guardrail includes a guardrail body and a plurality of gaps formed on the guardrail body; the freight elevator has a protective device, which can ensure the safety of personnel and goods when the elevator fails, such as the car is not on the designated floor or the cargo control is out of control when transporting goods, resulting in the floor door being knocked open, and the investment cost is low, the operation is simple, and the use effect is good.

[0004] However, the applicant found that freight elevators similar to the above-mentioned structural forms are limited by the size of the elevator car structure and cannot adaptively adjust the car structure state to accommodate and fix cargo of various shapes and sizes. This problem is mainly caused by the limitation of the car frame as the frame structure of the freight elevator car. If the car frame is made too small, it is easy to have difficulty in getting the cargo into the car. If the car is made too large, it will cause the cargo to slide and deviate inside the car or the car will be difficult to lift and move as a whole.

[0005] In response to the above problems, the inventors have proposed a car frame for a large cargo elevator that can adaptively adjust and change the size of the car according to the height of the cargo in the vertical direction, so as to better accommodate, place and connect and fix the cargo inside the cargo, thereby improving the working adaptability and operating stability of the elevator car. Utility Model Content

[0006] The utility model provides a car frame for a large-scale freight elevator which can adaptively adjust and change the size of the car according to the height size of the cargo in the vertical direction, so as to better accommodate, place and connect and fix the cargo inside the cargo, so as to improve the working adaptability and operation stability of the elevator car.

[0007] The above technical objectives of the utility model are achieved through the following technical solutions:

[0008] A car frame for a large cargo elevator comprises a main lifting frame arranged on the outside and an adjustable inner frame arranged inside the main lifting frame, the main lifting frame and the bottom of the adjustable inner frame are simultaneously connected and fixed on a supporting platform, the adjustable inner frame comprises a first frame body fixedly connected to the supporting platform and a second frame body movably arranged on the first frame body, the second frame body can be lifted and moved relative to the first frame body and change the size of the space inside the adjustable inner frame for accommodating and placing cargo.

[0009] As a preferred embodiment of the utility model, the top surface of the supporting platform is rectangular, the first frame body includes at least four base connecting columns which are respectively arranged at the four corners of the supporting platform and are in an upright state, and the second frame body includes top supporting connecting columns corresponding to the base connecting columns, and an accommodating cavity with an upper opening is formed in the base connecting column, and the lower part of the top supporting connecting column can be inserted into the accommodating cavity and can be raised and lowered in the vertical direction relative to the base connecting column.

[0010] As a preferred embodiment of the present invention, a cylinder supporting device for driving the supporting connecting column to move up and down is further provided at the bottom of the accommodating cavity.

[0011] As a preferred embodiment of the present invention, an anti-fall locking protection mechanism is formed between the base connecting column and the support top connecting column, and the anti-fall locking protection mechanism includes a locking positioning hole opened on the base connecting column and extending from the accommodating cavity to the outside, and a movable locking pin installed on the support top connecting column, and the movable locking pin can reciprocate in the horizontal direction so that its end passes through the locking positioning hole or is received inwardly inside the support top connecting column.

[0012] As a preferred embodiment of the present invention, a support top return spring is further provided between the support top connecting column and the movable locking pin.

[0013] As a preferred embodiment of the utility model, a first lateral blocking plate is fixedly connected between the base connecting columns on both sides, and a second lateral blocking plate is fixedly connected between the support top connecting columns on both sides, and a stacked nested structure is formed between the first lateral blocking plate and the second lateral blocking plate.

[0014] As a preferred embodiment of the present invention, a plurality of tying hooks are formed on the outer periphery of the supporting platform for cooperating with the tying components to strengthen and fix the goods.

[0015] As a preferred embodiment of the present invention, an elastic vibration-absorbing cushion layer is further provided at the bottom of the supporting platform.

[0016] In summary, the utility model can achieve the following multiple beneficial effects:

[0017] The large cargo elevator car frame provided in the solution of the utility model separates the main lifting frame for lifting the cargo from the inner frame part for accommodating the installation of the baffle and connecting and fixing the cargo. Such a structure can adjust the size of the internal car according to the size of the cargo actually required to be lifted and transported, and through the adaptive connection and fixation between the inner frame structure and the cargo, it can achieve reliable fixation of various large cargoes with large size differences without affecting the lifting effect of the traction machine equipment on the outer main frame, thereby effectively ensuring the stability of the cargo during lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front structural diagram of a large freight elevator car frame loaded with goods;

[0019] Figure 2 It is a schematic diagram of the side structure of a large freight elevator car frame loaded with goods;

[0020] Figure 3 It is a schematic diagram of the connection relationship between the base connecting column and the support top connecting column;

[0021] Figure 4 It is an enlarged structural diagram of the anti-fall locking protection mechanism;

[0022] Figure 5 It is a schematic diagram of the enlarged structure of the stacked nested structure.

[0023] In the figure:

[0024] 1——Main lifting frame;

[0025] 2——adjustable inner frame, 201——first frame body, 2011——base connecting column, 20111——accommodating chamber, 20112——cylinder supporting device, 202——second frame body, 2021——supporting connecting column;

[0026] 3——supporting platform, 301——lashing hook, 302——elastic vibration cushion;

[0027] 4——anti-fall locking protection mechanism, 401——locking positioning hole, 402——movable locking pin, 403——support top return spring;

[0028] 5 - stacked nested structure, 501 - first lateral blocking plate, 502 - second lateral blocking plate. DETAILED DESCRIPTION

[0029] The following specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0030] This solution is achieved through the following technical means:

[0031] Embodiment: The large cargo elevator car frame provided in the present embodiment realizes the separation of the main lifting frame 1 for lifting the cargo and the inner frame portion for accommodating the baffle for installation and connecting and fixing with the cargo. Such a structure can adjust the size of the internal car according to the size of the cargo actually required to be lifted and transported, and through the adaptive connection and fixation between the inner frame structure and the cargo, it can realize reliable fixation between various large cargoes with greatly different size specifications, without affecting the lifting effect of the traction machine equipment on the outer main frame, thereby effectively ensuring the stability of the cargo during lifting.

[0032] Specifically, the large-scale cargo elevator car frame provided in the utility model includes two main parts: a main lifting frame 1 arranged on the outside and an adjustable inner frame 2 arranged inside the main lifting frame 1, and the main lifting frame 1 and the adjustable inner frame 2 are installed together on a supporting platform 3 as a supporting base. Figure 1Taking the structure given as an example, the supporting platform 3 is in the shape of a flat rectangular block, and the main hoisting frame 1 includes at least four main connecting steel columns fixedly installed at the four corners of the supporting platform 3 and arranged in an upright shape, and the top ends of these main connecting steel columns are connected to a roller component hoisted at the lower end of the traction machine through a steel cable structure. Then, when the traction machine equipment is powered on, the supporting platform 3 can be used to lift the goods carried by it upward together.

[0033] As for the aforementioned adjustable inner frame 2, its function is mainly to serve as a basic frame for fixing the closed blocking plates of each part of the car, and to accommodate and place the goods and complete the connection and fixing of the goods. This part of the structure is similar to the structure of the main lifting frame 1, and is also a frame structure and includes a first frame body 201 and a second frame body 202. The second frame body 202 can be lifted and moved relative to the first frame body 201, so as to change and adjust the size of the internal space of the first frame body 201. Specifically, in order to realize the movement between the two parts of the frame body, the first frame body 201 here includes four base connection columns 2011 fixedly installed at the four corners of the supporting platform 3 with a rectangular top surface and arranged in an upright state. The bottoms of these base connection columns 2011 are inserted into the interior of the supporting platform 3 or installed and fixed by welding, and a hollow accommodating cavity 20111 is opened inside the base connection column 2011, and the top of the accommodating cavity 20111 is opened upward. Corresponding to the base connection column 2011, the second frame body 202 includes support top connection columns 2021 which are also arranged at the four corners and are in an upright state. At the same time, the support top connection columns 2021 are inserted into the interior of the accommodating cavity 20111 from top to bottom, so that each support top connection column 2021 can move up and down relative to the base connection column 2011 in the vertical direction. In order to drive the movement of the first frame body 201, refer to the attached manual. Figure 3 In the structural diagram given, a cylinder support device 20112 which is also placed in an upright state is installed inside each accommodating cavity 20111. When each cylinder support device 20112 is started to work at the same time, the second frame body 202 can be lifted upward as a whole by using each support connecting column 2021. Under this structure, the lifting and lowering movement of the adjustable inner frame 2 itself can be changed to change the size of the interior space of the car, thereby preventing the goods from excessively swaying or bouncing up and down inside the car, causing damage to the surface of the goods.

[0034] In order to prevent the second frame body 202 in the adjustable inner frame 2 from falling down and colliding with the cargo due to the instantaneous failure of the cylinder support device 20112, a fall-proof locking protection mechanism 4 may be formed between the base connecting column 2011 and the support top connecting column 2021 on the basis of the above structure. The fall-proof locking protection mechanism 4 includes a locking positioning hole 401 formed on the base connecting column 2011 and extending outward from the accommodating cavity 20111, and a movable locking pin 402 installed on the support top connecting column 2021. The movable locking pin 402 can reciprocate in the horizontal direction so that its end passes through the locking positioning hole 401 or is received inwardly in the support top connecting column 2021. At the same time, a support top return spring 403 is also provided between the support top connecting column 2021 and the movable locking pin 402. It should be noted here that, refer to the attached manual. Figure 4 In the structure given, the outer end surface of the aforementioned movable locking pin 402 is in an inclined state. At this time, when the cylinder supporting device 20112 as a driving device lifts the supporting connecting column 2021 upward, the movable locking pin 402 can automatically retract inward under the guidance of the inclined surface and pop out again under the action of the supporting return spring 403 when it rises to the next locking positioning hole 401. This repetition will not hinder the lifting action of the car frame, and can immediately use the abutment effect of the lower end surface of the movable locking pin 402 to play a protective effect of limiting the fall when the supporting function is lost instantly.

[0035] As a further preferred structure, a first lateral blocking plate 501 is fixedly connected between the base connection columns 2011 on both sides, and a second lateral blocking plate 502 is fixedly connected between the support top connection columns 2021 on both sides, and a stacked nesting structure 5 is formed between the first lateral blocking plate 501 and the second lateral blocking plate 502. At this time, when the second frame body 202 is lifted and lowered relative to the first frame body 201, since the lower end of the second lateral blocking plate 502 is inserted and embedded in the first lateral blocking plate 501, the two parts of the plate can be inserted and nested with each other, and the lateral blocking effect on the goods is ensured without affecting the relative movement of the two parts of the frame body.

[0036] Although the aforementioned adjustable inner frame 2 can change the size of the interior space of the car by lifting and lowering, thereby preventing the cargo from excessively swaying or bouncing up and down inside the car and causing damage to the surface of the cargo, the reliability of the connection and fixation between the cargo and the supporting platform 3 should be further strengthened. Figure 1In the structure given, a plurality of lashing hooks 301 protruding outward are formed on the outer periphery of the supporting platform 3, which are used to cooperate with the lashing components to further strengthen and fix the goods.

[0037] Of course, in order to reduce the impact and vibration on the cargo during the up and down movement of the entire car, an elastic vibration-absorbing pad 302 made of rubber material can also be installed at the bottom of the supporting platform, so as to reduce the impact and vibration transmitted to the cargo during the descent of the car, thereby effectively protecting the cargo.

[0038] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A car frame for a large freight elevator, characterized in that: The invention comprises a main lifting frame (1) arranged on the outside and an adjustable inner frame (2) arranged inside the main lifting frame (1); the main lifting frame (1) and the bottom of the adjustable inner frame (2) are simultaneously connected and fixed on a supporting platform (3); the adjustable inner frame (2) comprises a first frame body (201) fixedly connected to the supporting platform (3) and a second frame body (202) movably arranged on the first frame body (201); the second frame body (202) can be lifted and moved relative to the first frame body (201) and change the size of the space inside the adjustable inner frame (2) for accommodating and placing goods.

2. The large-scale freight elevator car frame according to claim 1, characterized in that: The top surface of the supporting platform (3) is in a rectangular shape, the first frame body (201) comprises at least four upright base connection columns (2011) which are respectively arranged at the four corners of the supporting platform (3), the second frame body (202) comprises a top support connection column (2021) corresponding to the base connection column (2011), the base connection column (2011) is formed with a receiving cavity (20111) with an upper opening, and the lower part of the top support connection column (2021) can be inserted into the receiving cavity (20111) and can be lifted and lowered relative to the base connection column (2011) in a vertical direction.

3. The large-scale freight elevator car frame according to claim 2, characterized in that: The bottom of the accommodating cavity (20111) is also provided with a cylinder support device (20112) for driving the support connection column (2021) to move up and down.

4. The large-scale freight elevator car frame according to claim 2, characterized in that: An anti-fall locking protection mechanism (4) is formed between the base connecting column (2011) and the support top connecting column (2021), and the anti-fall locking protection mechanism (4) comprises a locking positioning hole (401) opened on the base connecting column (2011) and extending outward from the accommodating cavity (20111), and a movable locking pin (402) installed on the support top connecting column (2021), and the movable locking pin (402) can reciprocate in the horizontal direction so that its end passes through the locking positioning hole (401) or is received inwardly inside the support top connecting column (2021).

5. The large-scale freight elevator car frame according to claim 4, characterized in that: A support top return spring (403) is also provided between the support top connection column (2021) and the movable locking pin (402).

6. The large-scale freight elevator car frame according to claim 2, characterized in that: A first lateral blocking plate (501) is fixedly connected between the base connection columns (2011) located on both sides, and a second lateral blocking plate (502) is fixedly connected between the support top connection columns (2021) located on both sides, and a stacked nested structure (5) is formed between the first lateral blocking plate (501) and the second lateral blocking plate (502).

7. The large-scale freight elevator car frame according to claim 1, characterized in that: A plurality of tying hooks (301) are also formed on the outer periphery of the supporting platform (3) for cooperating with tying components to reinforce and fix the cargo.

8. The large-scale freight elevator car frame according to claim 1, characterized in that: An elastic vibration-absorbing cushion layer (302) is also provided at the bottom of the supporting platform (3).

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