Pallet fork type reciprocating elevator

Abstract

The utility model discloses a pallet fork type reciprocating lift, which comprises a lift frame, a lifting driving mechanism, a lifting car and a telescopic pallet fork, the lift frame comprises a bottom frame, a top frame and a frame main body, the frame main body comprises a longitudinal rod, a transverse rod, a U-shaped rod and a limiting rod, the lifting driving mechanism comprises a gear motor, a transmission shaft, a counter weight frame, a counter weight frame guide rail and a lift car guide rail, a plurality of counter weight blocks are movably connected in the counter weight frame in a sleeved mode, the lifting lift car is arranged in the frame body, and the telescopic pallet fork is fixed to the bottom of the lifting lift car. The pallet fork type reciprocating elevator is advanced in design and reliable in operation, the weight of the counterweight frame can be adjusted, the speed reducing motor can operate with small load all the time, the service life of the speed reducing motor can be prolonged, the counterweight frame can be limited, collision between the counterweight frame and the lifting car is effectively avoided, and the service life of the lifting car is prolonged. And the counterweight frame and the lifting car can stably and reliably operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevators, and particularly relates to a forklift type reciprocating elevator. Background Art

[0002] A reciprocating elevator, also called a hoist or an elevator, is a device for reciprocating up and down conveying in lifting equipment. The reciprocating elevator is driven by a chain, and the motor is controlled by frequency conversion speed regulation to lift the car up and down reciprocally. A transmission mechanism is equipped on the lifting car so that the object to be conveyed can automatically enter the lifting car of the elevator. This type of elevator has the characteristics of advanced control, reliable performance, and high positioning accuracy of the lifting car.

[0003] The existing reciprocating elevator can only move goods in the vertical up and down direction and cannot move goods in the horizontal direction. When the goods are transported to the required position, manual or other external forces are needed to carry the goods, which greatly affects the work efficiency. The Chinese utility model patent with the patent publication number CN220519878U discloses a forklift type reciprocating elevator, and discloses that "a lifting mechanism is arranged at the bottom of the lifting car, a telescopic mechanism is arranged on the left side of the lifting mechanism, and the top of the telescopic mechanism is slidably connected with a forklift". Through the arranged telescopic forklift, the horizontal movement of goods can be realized, which greatly improves the work efficiency. However, there are still some places worthy of improvement. For example: 1. The weight of the counterweight cannot be adjusted. When the weight of the lifted goods is quite different from the weight of the counterweight, the function of reducing the load of the lifting motor cannot be realized; 2. There is a lack of restraint on the counterweight, which may cause the counterweight to run unstably, and there is a serious safety hazard that the counterweight collides with the lifting car. Therefore, it is urgent to design a forklift type reciprocating elevator to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a forklift type reciprocating elevator to solve the problems existing in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A forklift type reciprocating elevator, comprising:

[0006] A hoist frame, the hoist frame includes a bottom frame, a top frame and a frame body, the frame body includes vertical rods, cross bars and U-shaped rods fixedly connected between the two vertical rods, and limit rods fixedly connected to the ports of the U-shaped rods;

[0007] A lifting drive mechanism, the lifting drive mechanism comprising a reduction motor and a transmission shaft arranged on the top frame, a counterweight frame arranged between the U-shaped rod and the limit rod, a counterweight frame guide rail arranged on the inner side wall of the U-shaped rod, and a car guide rail arranged in the frame body, a plurality of counterweight blocks being movably sleeved in the counterweight frame, and counterweight frame guide shoes being fixed at the four corners of the counterweight frame and being slidably connected to the counterweight frame guide rail;

[0008] A lift car, the lift car is arranged inside the frame body, both sides of the top and bottom of the lift car are provided with car guide shoes slidably connected to the car guide rails, the top and both sides of the lift car are provided with sealing plates, the lift car is connected to the counterweight frame through a traction chain, and the traction chain is meshed and connected with a sprocket arranged on the transmission shaft;

[0009] A telescopic fork is fixed to the bottom of the lift car, and a driving motor is fixed to the bottom of the telescopic fork.

[0010] Furthermore, at least two limit blocks are provided in the bottom frame, and the two limit blocks are arranged corresponding to the bottom of the lift car. A cylindrical rubber buffer block is fixed on the top of the limit block, and the horizontal height of the cylindrical rubber buffer block is higher than the horizontal height of the drive motor.

[0011] Furthermore, a plurality of the U-shaped rods are evenly distributed on the same side of the frame body from top to bottom, and the distance between two adjacent U-shaped rods is smaller than the height of the counterweight frame.

[0012] Furthermore, at least two transmission shafts are provided, and the two transmission shafts are fixed on both sides of the top frame through bearing seats. Both ends of the transmission shaft and the output shaft of the reduction motor are key-connected with sprockets, and the output shaft of the reduction motor is connected to one of the transmission shafts through a transmission chain.

[0013] Furthermore, the counterweight frame and the top of the lift car are both fixed with connecting joints.

[0014] Furthermore, there are two counterweight frame guide rails in total, and the two counterweight frame guide rails are symmetrically arranged with respect to the central axis plane of the U-shaped rod, and the two counterweight frame guide rails are respectively fixedly connected to the inner side walls of the U-shaped rod corresponding thereto.

[0015] Furthermore, there are two car guide rails in total, and the two car guide rails are symmetrically arranged with respect to the central axis of the lifting car, and the two car guide rails are respectively fixedly connected to their corresponding cross bars and U-shaped bars.

[0016] Furthermore, the counterweight frame is a rectangular frame structure, the inner side of the lateral rod of the counterweight frame is provided with a limiting groove and the top end of the adjacent side is provided with an opening groove.

[0017] Technical effects and advantages of the present utility model: The forklift-type reciprocating elevator is advanced in design, compact in structure, convenient to use and reliable in operation. By setting a counterweight frame and a number of counterweight blocks, it is convenient to increase or decrease the number of counterweight blocks according to the weight of the goods to be lifted, so as to adjust the weight of the counterweight frame, making the weight of the counterweight frame always close to the weight of the goods, enabling the reduction motor to always operate with a smaller load, which is beneficial to extending the service life of the reduction motor. By setting a U-shaped rod and a limiting rod, the counterweight frame can be limited, effectively avoiding the collision between the counterweight frame and the lifting car. By setting counterweight frame guide shoes and car guide shoes, the counterweight frame and the lifting car can run stably and reliably. Description of the Drawings

[0018] Figure 1 is a structural schematic diagram of the present utility model;

[0019] Figure 2 is a front view of the present utility model;

[0020] Figure 3 is a rear view of the present utility model;

[0021] Figure 4 is a right view of the present utility model;

[0022] Figure 5 is a top view of the present utility model;

[0023] Figure 6 is a bottom view of the present utility model;

[0024] Figure 7 is a structural schematic diagram of the counterweight frame of the present utility model.

[0025] In the figure: 100, hoist frame; 101, bottom frame; 1011, limit block; 1012, cylindrical rubber buffer block; 102, top frame; 103, frame body; 1031, longitudinal rod; 1032, cross bar; 1033, U-shaped rod; 1034, limiting rod; 200, lifting drive mechanism; 201, reduction motor; 202, transmission shaft; 2021, sprocket; 203, counterweight frame; 2031, counterweight block; 2032, counterweight frame guide shoe; 2033, limit groove; 2034, opening groove; 204, counterweight frame guide rail; 205, car guide rail; 206, traction chain; 207, drive chain; 208, link head; 300, lifting car; 301, car guide shoe; 302, closing plate; 400, telescopic forklift; 401, drive motor. Detailed Implementation Modes

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] The present utility model provides a Figures 1-7 fork-type reciprocating elevator as shown in

[0030] A hoist frame 100, the hoist frame 100 includes a bottom frame 101, a top frame 102 and a frame body 103. The frame body 103 includes four longitudinal rods 1031, cross bars 1032 and U-shaped rods 1033 fixedly connected between adjacent two longitudinal rods 1031, and limit rods 1034 fixedly connected to the ports of the U-shaped rods 1033;

[0031] A lifting drive mechanism 200, the lifting drive mechanism 200 includes a reduction motor 201 and a transmission shaft 202 arranged on the top frame 102, a counterweight frame 203 arranged between the U-shaped rod 1033 and the limit rod 1034, a counterweight frame guide rail 204 arranged on the inner side wall of the U-shaped rod 1033, and a car guide rail 205 arranged inside the frame body 103. A number of counterweight blocks 2031 are movably sleeved inside the counterweight frame 203, and counterweight frame guide shoes 2032 slidably connected to the counterweight frame guide rail 204 are fixed at the four corners of the counterweight frame 203;

[0032] The lifting car 300 is arranged inside the frame body 103. On both sides of the top and bottom of the lifting car 300, car guide shoes 301 that are slidably connected to the car guide rails 205 are provided. Sealing plates 302 are provided on the top and both sides of the lifting car 300. The lifting car 300 is connected to the counterweight frame 203 through a traction chain 206, and the traction chain 206 is meshed and connected to a sprocket 2021 provided on the transmission shaft 202;

[0033] The telescopic fork 400 is fixed to the bottom of the lifting car 300. A drive motor 401 is fixed to the bottom of the telescopic fork 400. The telescopic fork 400 includes three fork arms, namely an upper fork arm (front fork arm), a middle fork arm, and a lower fork arm (fixed fork arm). It is combined with more than a hundred components such as guide rollers, gear racks, sprocket chains, guide sliders, limit switches (travel switches), middle position switches (proximity switches), torque limiters, encoders, drivers, motors, speed reducers, and couplings to form a complete telescopic mechanism. The telescopic fork 400 is a prior art, and its specific structure and working principle will not be elaborated here. Among them, the lower fork arm (fixed fork arm) is installed on the inner bottom surface of the lifting car 300. The middle fork arm moves outwards by about half of its own length under the drive of the gear rack, and the upper fork arm (front fork arm) continues to extend outwards from the midpoint of the middle fork arm.

[0034] Exemplarily, referring to Figures 2-4 and Figure 6 As shown, at least two limit blocks 1011 are provided inside the bottom frame 101. The two limit blocks 1011 are arranged corresponding to the bottom of the lifting car 300. A columnar rubber buffer block 1012 is fixed to the top of the limit block 1011, and the horizontal height of the columnar rubber buffer block 1012 is higher than the horizontal height of the drive motor 401.

[0035] In this technical solution, when the lifting car 300 descends to the lowest position, the limit blocks 1011 can support, buffer, and limit the lifting car 300, preventing the lifting car 300 from directly contacting the ground, and further preventing the drive motor 401 from colliding with the ground and being damaged.

[0036] Exemplarily, referring to Figures 1-2 and Figure 4 As shown, several U-shaped rods 1033 are equidistantly distributed from top to bottom on the same side of the frame body 103, and the distance between adjacent two U-shaped rods 1033 is less than the height of the counterweight frame 203.

[0037] In this technical solution, several U-shaped rods 1033 and the counterweight frame 203 are arranged on the same side, which can ensure the limiting effect of the U-shaped rods 1033 on the counterweight frame 203, preventing the counterweight frame 203 from protruding between adjacent two U-shaped rods 1033 and colliding with the lifting car 300.

[0038] Exemplarily, refer to Figures 1-5 As shown, there are at least two drive shafts 202. The two drive shafts 202 are fixed on both sides of the top frame 102 through bearing seats. Sprockets 2021 are key-connected to both ends of the drive shaft 202 and the output shaft of the reduction motor 201. The output shaft of the reduction motor 201 is connected to one of the drive shafts 202 through a drive chain 207.

[0039] In this technical solution, the power of the reduction motor 201 can be transmitted to the drive shaft 202 through the drive chain 207. The reduction motor 201 drives the drive shaft 202 to rotate forward and backward. The sprockets 2021 on the drive shaft 202 rotate forward and backward together with the drive shaft 202. The rotation of the sprockets 2021 drives the two ends of the traction chain 206 to rise or fall, and finally realizes the rise or fall of the lifting car 300.

[0040] Exemplarily, refer to Figures 1-3 and Figure 7 As shown, link heads 208 are fixedly installed on the tops of both the counterweight frame 203 and the lifting car 300.

[0041] In this technical solution, it is convenient to fixedly connect with the ends of the traction chain 206 through the link heads 208.

[0042] Exemplarily, refer to Figures 1-3 As shown, there are two counterweight frame guide rails 204 in total. The two counterweight frame guide rails 204 are symmetrically arranged with respect to the central axis plane of the U-shaped rod 1033, and the two counterweight frame guide rails 204 are respectively fixedly connected to the inner side walls of the corresponding U-shaped rods 1033.

[0043] In this technical solution, the counterweight frame 203 can move up and down along the counterweight frame guide rails 204 through the counterweight frame guide shoes 2032 at its four corners, making the movement of the counterweight frame 203 more stable and reliable.

[0044] Exemplarily, refer to Figures 1-3 As shown, there are two car guide rails 205 in total. The two car guide rails 205 are symmetrically arranged with respect to the central axis plane of the lifting car 300, and the two car guide rails 205 are respectively fixedly connected to the corresponding cross bars 1032 and U-shaped rods 1033.

[0045] In this technical solution, the lifting car 300 can move up and down along the car guide rails 205 through the car guide shoes 301 on both sides of its top and bottom, making the movement of the lifting car 300 more stable and reliable.

[0046] Exemplarily, refer to Figure 7 As shown, the counterweight frame 203 is of a rectangular frame structure. A limiting groove 2033 is provided on the inner side of the lateral rod of the counterweight frame 203, and an opening groove 2034 is provided at the top of the adjacent side.

[0047] In this technical solution, it is convenient to take out the counterweight block 2031 in the counterweight frame 203 from the opening slot 2034, or to load the counterweight block 2031 into the counterweight frame 203 from the opening slot 2034. Both ends of the counterweight block 2031 are nested in the limiting slots 2033, which can prevent the counterweight block 2031 from falling off the counterweight frame 203, and has the advantages of flexible disassembly and assembly and high safety.

[0048] Working principle: When the forklift-type reciprocating elevator is in use, it first receives instructions from the WCS (Warehouse Control System) warehouse control system, and then starts the reduction motor 201. The reduction motor 201 drives the transmission shaft 202 to rotate through the transmission chain 207. The transmission shaft 202 drives the sprocket 2021 to rotate together. The sprocket 2021 drives the two ends of the traction chain 206 to move up and down, and then the lifting car 300 is sent to the designated docking layer of the system through the traction chain 206 and real-time information interaction is carried out. When the lifting car 300 stops stably, the telescopic forklift 400 extends its forks and inserts and picks up the docking goods, and then lifts and retracts the docking goods. After completing the entire picking operation, the elevator then sends the goods to the designated position of the system. This forklift-type reciprocating elevator is advanced in design, compact in structure, convenient to use and reliable in operation. By setting the counterweight frame 203 and several counterweight blocks 2031, it is convenient to increase or decrease the number of counterweight blocks 2031 according to the weight of the goods to be lifted, so as to realize the weight adjustment of the counterweight frame 203, so that the weight of the counterweight frame 203 is always close to the weight of the goods, so that the reduction motor 201 can always operate with a small load, which is beneficial to extending the service life of the reduction motor 201. By setting the U-shaped rod 1033 and the limiting rod 1034, the counterweight frame 203 can be limited, and the collision between the counterweight frame 203 and the lifting car 300 can be effectively avoided. By setting the counterweight frame guide shoe 2032 and the car guide shoe 301, the counterweight frame 203 and the lifting car 300 can operate stably and reliably.

[0049] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A forklift-type reciprocating elevator, characterized in that include: A hoist frame (100), the hoist frame (100) comprising a bottom frame (101), a top frame (102) and a frame body (103), the frame body (103) comprising a longitudinal rod (1031), a cross rod (1032) and a U-shaped rod (1033) fixedly connected between two longitudinal rods (1031), and a limit rod (1034) fixedly connected at an end of the U-shaped rod (1033); A lifting drive mechanism (200), the lifting drive mechanism (200) comprising a reduction motor (201) and a transmission shaft (202) arranged on a top frame (102), a counterweight frame (203) arranged between a U-shaped rod (1033) and a limit rod (1034), a counterweight frame guide rail (204) arranged on the inner side wall of the U-shaped rod (1033), and a car guide rail (205) arranged in a frame body (103), a plurality of counterweight blocks (2031) being movably sleeved in the counterweight frame (203), and counterweight frame guide shoes (2032) slidably connected to the counterweight frame guide rail (204) being fixed at four corners of the counterweight frame (203); A lift car (300), the lift car (300) is arranged inside the frame body (103), the top and bottom sides of the lift car (300) are provided with car guide shoes (301) slidably connected to the car guide rails (205), the top and both sides of the lift car (300) are provided with sealing plates (302), the lift car (300) is connected to the counterweight frame (203) through a traction chain (206), and the traction chain (206) is meshedly connected with a sprocket (2021) arranged on the transmission shaft (202); A telescopic fork (400) is fixed to the bottom of the lift car (300), and a driving motor (401) is fixed to the bottom of the telescopic fork (400).

2. The forklift type reciprocating elevator according to claim 1, wherein: At least two limit blocks (1011) are arranged in the bottom frame (101), and the two limit blocks (1011) are arranged corresponding to the bottom of the lift car (300). A columnar rubber buffer block (1012) is fixed on the top of the limit block (1011), and the horizontal height of the columnar rubber buffer block (1012) is higher than the horizontal height of the drive motor (401).

3. The forklift-type reciprocating elevator according to claim 1, characterized in that: A plurality of U-shaped rods (1033) are evenly distributed from top to bottom on the same side of the frame body (103), and the distance between two adjacent U-shaped rods (1033) is smaller than the height of the counterweight frame (203).

4. The forklift type reciprocating elevator according to claim 1, characterized in that: At least two transmission shafts (202) are provided, and the two transmission shafts (202) are fixed on both sides of the top frame (102) via bearing seats, and both ends of the transmission shaft (202) and the output shaft of the reduction motor (201) are key-connected with sprockets (2021), and the output shaft of the reduction motor (201) is transmission-connected to one of the transmission shafts (202) via a transmission chain (207).

5. The forklift type reciprocating elevator according to claim 1, wherein: The counterweight frame (203) and the top of the lift car (300) are both fixed with a link joint (208).

6. The forklift type reciprocating elevator according to claim 1, characterized in that: There are two counterweight frame guide rails (204) in total. The two counterweight frame guide rails (204) are symmetrically arranged with respect to the central axis plane of the U-shaped rod (1033), and the two counterweight frame guide rails (204) are respectively fixedly connected to the inner side walls of the corresponding U-shaped rods (1033).

7. The forklift type reciprocating elevator according to claim 1, characterized in that: There are two car guide rails (205) in total. The two car guide rails (205) are symmetrically arranged with respect to the central axis plane of the lifting car (300), and the two car guide rails (205) are respectively fixedly connected to the corresponding cross bars (1032) and U-shaped rods (1033).

8. The forklift-type reciprocating elevator according to claim 1, characterized in that: The counterweight frame (203) is a rectangular frame structure. A limiting groove (2033) is provided inside the lateral rod of the counterweight frame (203), and an opening groove (2034) is provided at the top of the adjacent side.

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