A super heavy load hydraulic freight elevator

Abstract

The application relates to the technical field of hydraulic freight elevators, in particular to an ultralarge-load hydraulic freight elevator; the ultralarge-load hydraulic freight elevator comprises a platform frame, the platform frame comprises a bottom supporting plate and a bearing plate which is screw-connected above the bottom supporting plate; side stoppers are welded to the top ends of the left and right sides of the bottom supporting plate, and a rear stopper is welded to the top end of the rear side of the bottom supporting plate; the platform frame is integrally formed into an assembled stable structure, so that when the platform frame is subjected to force in the middle, the two sides can disperse the gravity, the whole can jointly bear external force, and problems such as middle depression and fracture caused by force concentration in the middle can be greatly reduced.

Description

Technical Field

[0001] This invention relates to the technical field of hydraulic freight elevators, specifically to an ultra-large load-bearing hydraulic freight elevator. Background Technology

[0002] The extra-large load-bearing hydraulic freight elevator is a lifting device specially designed to carry heavy objects. It has the advantages of strong load-bearing capacity, good stability, and high safety performance. It is widely used in warehouses, factories, logistics centers and other places. The extra-large load-bearing hydraulic freight elevator mainly consists of a guide rail system, platform frame, hydraulic system, drive system, control system, ground support structure and safety devices. The specific working process is as follows: The operator selects the target floor through the control panel and presses the start button. After receiving the instruction, the control system starts the motor, which drives the hydraulic system's oil pump to operate, drawing hydraulic oil from the tank into the pump. The pump pressurizes the hydraulic oil and delivers it to the cylinder through the hydraulic pipeline. The high-pressure hydraulic oil enters the cylinder, pushing the piston upward. The piston's rise causes the platform frame to rise, allowing the freight elevator to rise smoothly along the guide rail system. When the freight elevator approaches the target floor, the control system detects the position through sensors. Upon reaching the target floor, the control system stops the motor and oil pump, the oil in the cylinder stops flowing, and the platform frame stops rising. The safety door interlock mechanism of the safety device ensures that the door can only be opened after the platform frame has completely stopped. After the goods are unloaded from the platform frame, the operator closes the door and selects a new target floor or returns to the original floor. After receiving the descent instruction, the control system opens the return valve of the cylinder, allowing the high-pressure oil in the cylinder to flow back to the tank. The piston slowly descends under the action of gravity. The platform frame descends smoothly along the guide rail system until it reaches the target floor.

[0003] Throughout the process, various safety devices, such as overload protection, speed limiting devices, and fall protection devices, continuously monitor the status of the freight elevator to ensure safety. If any abnormality occurs, the safety devices will be activated immediately, stopping the operation of the freight elevator and issuing an alarm. As can be seen from the above principle, the main load of the ultra-heavy-duty hydraulic freight elevator is on the platform frame, and the load-bearing capacity of the platform frame itself is also very important. Since the hydraulic system of the hydraulic freight elevator acts on both ends of the platform frame, if the strength of the platform frame itself is insufficient, there is a risk of the platform frame denting or breaking in the middle when placing ultra-heavy loads, which may lead to the complete scrapping of the platform frame and increase the subsequent maintenance or replacement costs. Summary of the Invention

[0004] This invention provides an ultra-large load-bearing hydraulic freight elevator to solve the problem of insufficient strength in related technologies.

[0005] This invention provides an ultra-large load-bearing hydraulic freight elevator, including a platform frame. The platform frame includes a bottom support plate and a support plate threadedly connected above the bottom support plate. Side blocks are welded to the left and right sides of the top of the bottom support plate, and a rear block is welded to the rear side of the top of the bottom support plate. A support reinforcement component is disposed between the bottom support plate and the support plate to enhance the support strength of the bottom end of the support plate.

[0006] The supporting reinforcement component includes two first reinforcing strips that are cross-angled and fixed to the top of the base plate, and two second reinforcing strips that are fixedly connected between the front and rear ends of the two first reinforcing strips. The bottom end of the second reinforcing strip is fixedly connected to the top of the base plate.

[0007] Two side blocks have symmetrical relief grooves at their bottom ends facing each other. The ends of the first and second reinforcing bars that meet are located in the relief grooves. The front and rear ends of the side blocks have vertically connected placement grooves that are connected to the relief grooves. A docking component is installed in the placement groove.

[0008] The rear stop block is fixedly connected to the rear end of the side stop block on the left and right sides of the front end. The top of the rear stop block has two limiting grooves that run vertically through it. The inner wall of the limiting groove is fixedly connected to a U-shaped docking groove near the top groove opening. Limiting components are set in the limiting groove.

[0009] In one possible implementation, a first fixing plate is provided at the upper end of the side block, and alignment groups are provided at the front and rear ends of the first fixing plate corresponding to the positions of the placement slots. The alignment groups include two staggered guide rods, which are respectively set to guide blocks in the placement slots. A mating threaded hole is opened at the top of the side block between the two placement slots. A threaded countersunk hole is opened on the first fixing plate corresponding to the mating threaded hole on the side block. The mating threaded hole and the threaded countersunk hole are connected by a long screw.

[0010] In one possible implementation, a second fixing plate is provided at the upper end of the rear stop block, and a U-shaped locking block is provided on the left and right sides of the second fixing plate at the position corresponding to the limiting groove; the U-shaped locking block engages with the limiting groove, a mating threaded hole is provided at the top of the rear stop block, and a threaded countersunk hole is provided on the second fixing plate at the position corresponding to the mating threaded hole on the rear stop block, and the mating threaded hole and the threaded countersunk hole are connected by a long screw thread.

[0011] In one possible implementation, the docking assembly includes trapezoidal locking strips fixedly connected to adjacent side walls within the placement groove, with a docking component engaged within the trapezoidal locking strips. Guide blocks with through holes are fixedly connected to the other adjacent side walls within the placement groove. The docking component consists of a triangular block and a rectangular diagonal strip integrally formed on the triangular block. A connecting block is fixedly connected to the bottom end of the triangular block. Trapezoidal grooves are formed on the two non-contacting sides of the triangular block and the rectangular block, and the trapezoidal grooves engage with the trapezoidal locking strips.

[0012] In one possible implementation, both ends of the first reinforcing strip are provided with mating groove sets. Each set of mating grooves includes a vertical mating groove near the end of the first reinforcing strip and a diagonal mating groove near the vertical mating groove. The vertical mating groove engages with the connecting block at the bottom of the mating part, and the diagonal mating groove engages with the rectangular strip on the mating part.

[0013] In one possible implementation, the second reinforcing strip located on the rear side has rectangular through slots symmetrically formed on both sides, and the second reinforcing strip located on the front side has stepped slots symmetrically formed on both sides. The rectangular through slots and stepped slots on the same side are positioned in a one-to-one correspondence. Transition through slots are formed on both first reinforcing strips at positions corresponding to the rectangular through slots and stepped slots. A connecting strip is engaged on the rectangular through slots, transition through slots, and stepped slots on the same side.

[0014] In one possible implementation, a rectangular protrusion is integrally formed on the front side of the connecting strip, and the rectangular protrusion is correspondingly engaged with the front side of the stepped groove. A limiting through groove is formed near the rear end of the connecting strip, and a limiting inclined groove is formed at the upper end of the connecting strip and in front of the limiting through groove.

[0015] In one possible implementation, the limiting member consists of two rectangular vertical bars in an inverted V-shape. The rectangular vertical bar on the front side is inclined. The bottom support plate has a bottom docking slot and a bottom docking rectangular groove on the rear side of the top of the limiting member, and the bottom docking slot is located in front of the bottom docking rectangular groove.

[0016] In one possible implementation, a slot is provided at the top center of one of the first reinforcing strips, and a slot is also provided at the bottom center of the other first reinforcing strip. The depth of the slots is half the height of the first reinforcing strips, and the two slots are engaged and connected.

[0017] In one possible implementation, an alignment component is also included. The alignment component includes two long bars disposed on the left and right sides of the side block. One long bar is fixedly connected to a connecting rod near the front side, and the other long bar is fixedly connected to a connecting rod near the rear side. Connecting grooves are provided on the long bars corresponding to the positions of the connecting rods on the opposite sides. Both connecting rods slide through the first reinforcing strip and the limiting component. Alignment holes are provided on the first reinforcing strip and the limiting component corresponding to the positions of the connecting rods.

[0018] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0019] 1. According to the embodiments of the present invention, an ultra-large load-bearing hydraulic freight elevator is provided. By forming the platform frame as a whole into an assembled stable structure, the gravity can be distributed on both sides when the platform frame is subjected to force in the middle. The entire structure jointly bears the external force, which can greatly reduce problems such as central depression and breakage caused by the concentration of force in the middle.

[0020] 2. According to the embodiments of the present invention, an ultra-large load-bearing hydraulic freight elevator can enhance the support force at the bottom of the platform frame by setting a support reinforcement component between the bottom support plate and the support plate. Moreover, the support reinforcement component is composed of multiple triangular structures, making the whole structure more stable.

[0021] 3. The ultra-large load-bearing hydraulic freight elevator provided by the present invention, through the setting of docking components and limiting components, enables the side structure and bottom structure of the platform frame to be stably connected, which enhances the overall strength and has a certain degree of stability, and the overall structure is simple and easy to assemble. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the platform frame structure of an ultra-large load-bearing hydraulic freight elevator provided in an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the platform frame structure of an ultra-large load-bearing hydraulic freight elevator provided in an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the first fixed plate structure of an ultra-large load-bearing hydraulic freight elevator provided in an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the second fixed plate structure of an ultra-large load-bearing hydraulic freight elevator provided in an embodiment of the present invention.

[0026] Figure 5 This is a top view of the side and rear blocks of an ultra-large load-bearing hydraulic freight elevator provided in an embodiment of the present invention.

[0027] Figure 6 This is a schematic diagram of the platform frame structure of an ultra-large load-bearing hydraulic freight elevator provided in an embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram of the connection structure between the docking component and the supporting reinforcement component of an ultra-large load-bearing hydraulic freight elevator provided in an embodiment of the present invention.

[0029] Figure 8 This is a schematic diagram of the connecting strip structure of an ultra-large load-bearing hydraulic freight elevator provided in an embodiment of the present invention.

[0030] Figure 9 This is a schematic diagram of the connection structure of the bottom support plate and the supporting reinforcement component of an ultra-large load-bearing hydraulic freight elevator provided in an embodiment of the present invention.

[0031] Figure 10 This is a schematic diagram of the docking component structure of an ultra-large load-bearing hydraulic freight elevator provided in an embodiment of the present invention.

[0032] In the diagram: 1. Base plate; 11. Side stop block; 111. Clearance groove; 112. Placement groove; 113. Guide block; 12. Rear stop block; 121. Limiting groove; 122. U-shaped docking groove; 13. First fixing plate; 131. Guide rod; 14. Second fixing plate; 141. U-shaped locking block; 15. Bottom docking slot; 16. Bottom docking rectangular groove; 2. Support plate; 3. Supporting reinforcement assembly; 31. First reinforcing strip; 311. Docking vertical groove; 312. Docking oblique groove; 313. Transition through groove; 32. Second reinforcing strip; 321. Rectangular through groove; 322. Stepped groove; 4. Connecting strip; 41. Limiting through groove; 42. Limiting oblique groove; 5. Docking assembly; 51. Trapezoidal locking strip; 52. Docking part; 6. Limiting part; 7. Alignment part; 71. Long bar; 72. Connecting rod. Detailed Implementation

[0033] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] A super-large load-bearing hydraulic freight elevator includes a platform frame, a guide rail system, a hydraulic system, a drive system, a control system, a ground support structure, and a safety device. The platform frame is mounted on the guide rail system, which is mounted on the ground support structure. The bottom of the ground support structure is mounted on the building floor, and the top of the ground support structure is mounted on the building roof. The hydraulic system provides lifting power to the platform frame and is mounted on and connected to the ground support structure. The drive system is connected to the hydraulic system and provides power to it. The control system is connected to the hydraulic system and the drive system and controls the hydraulic system and the drive system to drive the platform frame. The safety device is connected to the control system and promptly cuts off the power supply or issues an alarm in abnormal situations. The guide rail system, hydraulic system, drive system, control system, ground support structure, and safety device are all prior art and are not shown in the accompanying drawings, so they will not be described in detail here.

[0035] Please see Figure 1 and Figure 2 The platform frame includes a base plate 1 and a support plate 2 threadedly connected above the base plate 1; side blocks 11 are welded to the left and right sides of the top of the base plate 1, and a rear block 12 is welded to the rear side of the top of the base plate 1; a support reinforcement component 3 is disposed between the base plate 1 and the support plate 2 to enhance the support strength of the bottom of the support plate 2.

[0036] Continue reading Figure 5 and Figure 7 The supporting reinforcement component 3 includes two first reinforcing strips 31 that are cross-angled and fixed to the top of the base plate 1, and two second reinforcing strips 32 that are fixedly connected between the front and rear ends of the two first reinforcing strips 31. The bottom end of the second reinforcing strip 32 is fixedly connected to the top of the base plate 1. A groove is formed in the middle of the top of one first reinforcing strip 31, and a groove is also formed in the middle of the bottom end of the other first reinforcing strip 31. The depth of the groove is half the height of the first reinforcing strip 31, and the two grooves are fitted together.

[0037] See Figure 2 and Figure 6 Two side blocks 11 are symmetrically provided with relief grooves 111 at their opposite bottom ends. The ends of the first reinforcing strip 31 and the second reinforcing strip 32 are located in the relief grooves 111. The front and rear ends of the side blocks 11 are provided with placement grooves 112 that run vertically through each other. The placement grooves 112 are connected to the relief grooves 111. The placement grooves 112 are provided with a docking component 5.

[0038] See Figure 2 and Figure 5 The rear stop block 12 located on the rear side is fixedly connected to the rear end of the side stop block 11 on the left and right sides of the front end. Two limiting grooves 121 are opened through the top of the rear stop block 12. A U-shaped docking groove 122 is fixedly connected to the inner wall of the limiting groove 121 near the top groove opening. A limiting component 6 is provided in the limiting groove 121.

[0039] In this invention, all snap-fit ​​connections are interference fits to accommodate the need to withstand large loads over a long period and ensure structural stability. External tools are required for these snap-fit ​​connections. Specifically, the two first reinforcing strips 31 are first joined together. Since the depth of the slot is half the height of the first reinforcing strip 31, after the two slots are joined together, the tops of the two first reinforcing strips 31 are flush. The joint of the two first reinforcing strips 31 can be welded and fixed. At the same time, the two second reinforcing strips 32 are placed on the front and rear sides of the first reinforcing strip 31 respectively and welded and fixed to the first reinforcing strip 31. The figure-eight structure formed by the first reinforcing strips 31 and the second reinforcing strips 32 is welded and fixed to the top of the base plate 1.

[0040] Then, the two side blocks 11 are welded and fixed to the left and right sides of the top of the bottom support plate 1. The rear block 12 is first welded and fixed to the rear side of the top of the bottom support plate 1, and then welded and fixed to the position where it meets the side blocks 11, forming a preliminary frame.

[0041] See Figure 2 , Figure 7 and Figure 10The docking assembly 5 includes trapezoidal retaining strips 51 fixedly connected to adjacent side walls within the placement groove 112. A docking component 52 is engaged within the trapezoidal retaining strips 51. Guide blocks 113 with through holes are fixedly connected to the other adjacent side walls within the placement groove 112. Both ends of the first reinforcing strip 31 are provided with mating groove sets. Each mating groove set includes a vertical docking groove 311 near the end of the first reinforcing strip 31 and a diagonal docking groove 312 near the vertical docking groove 311. The vertical docking groove 311 engages with the connecting block at the bottom of the docking component 52, and the diagonal docking groove 312 engages with the rectangular strip on the docking component 52.

[0042] Continue reading Figure 10 The docking part 52 consists of a triangular block and a rectangular diagonal strip integrally formed on the triangular block. A connecting block is fixedly connected to the bottom end of the triangular block. Trapezoidal grooves are opened on the two non-contact sides of the triangular block and the rectangular block. The trapezoidal grooves are engaged with the trapezoidal clip 51.

[0043] The four docking pieces 52 are sequentially snapped into the relief groove 111. The trapezoidal groove on the docking piece 52 slides down along the trapezoidal locking strip 51 until the connecting block at the bottom of the docking piece 52 engages with the docking vertical groove 311. At this time, the bottom end of the rectangular diagonal strip on the docking piece 52 engages with the docking diagonal groove 312, and the bottom end of the triangular block contacts the top end of the first reinforcing strip 31 and the second reinforcing strip 32. The top end of the triangular block is located at the groove opening of the relief groove 111.

[0044] See Figure 7 and Figure 9 The second reinforcing strip 32 on the rear side has rectangular through grooves 321 symmetrically arranged on the left and right sides, and the second reinforcing strip 32 on the front side has stepped grooves 322 symmetrically arranged on the left and right sides. The rectangular through grooves 321 and stepped grooves 322 on the same side are positioned in a one-to-one correspondence. The two first reinforcing strips 31 have transition through grooves 313 at the positions corresponding to the rectangular through grooves 321 and stepped grooves 322. The rectangular through grooves 321, transition through grooves 313 and stepped grooves 322 on the same side are connected to a connecting strip 4.

[0045] Continue reading Figure 8 The front side of the connecting strip 4 is integrally formed with a rectangular protrusion, which is correspondingly engaged with the front side of the stepped groove 322. A limiting groove 41 is opened near the rear end of the connecting strip 4, and a limiting inclined groove 42 is opened at the upper end of the connecting strip 4 and in front of the limiting groove 41.

[0046] After the four mating parts 52 are mated, the front sides of the two connecting strips 4 are sequentially passed through the rectangular through groove 321 of the rear second reinforcing strip 32, the transition through groove 313 on the two first reinforcing strips 31, and the stepped groove 322 of the front second reinforcing strip 32, until the rectangular protrusion on the front side of the connecting strip 4 engages with the stepped groove 322 on the front second reinforcing strip 32. The engagement of the rectangular protrusion with the stepped groove 322 serves both to align the parts and to enhance the stability of the connection.

[0047] See Figure 2 , Figure 6 and Figure 9 The limiting member 6 is composed of two rectangular vertical bars and has an inverted V-shaped structure. The rectangular vertical bar on the front side is inclined. The bottom support plate 1 has a bottom docking slot 15 and a bottom docking rectangular groove 16 on the rear side of the top of the limiting member 6, and the bottom docking slot 15 is located in front of the bottom docking rectangular groove 16.

[0048] Next, place the limiting member 6 into the limiting groove 121. The rectangular vertical strip on the rear side of the limiting member 6 slides downward along the outer wall of the U-shaped docking groove 122 in the limiting groove 121 until the bottom end of the limiting member 6 passes through the limiting through groove 41 and the limiting inclined groove 42 on the connecting strip 4. The rectangular vertical strip on the front side of the limiting member 6 is inserted into the limiting inclined groove 42 until it is engaged in the bottom docking groove 15. The rectangular vertical strip on the rear side is inserted into the limiting through groove 41 until it is engaged in the bottom docking rectangular groove 16, thus completing the engagement of the limiting member 6. The two first fixing plates 13 are then connected to the side stop blocks 11 in sequence. The guide rod 131 is inserted into the through hole on the guide block 113 to play the role of limiting engagement. At the same time, the first fixing plates 13 are connected to the side stop blocks 11 by long screws. Similarly, the second fixing plate 14 is connected to the rear stop block 12, and the corresponding loop-shaped locking block 141 is locked into the loop-shaped docking groove 122. The second fixing plate 14 and the rear stop block 12 are connected by long screws.

[0049] See Figure 1 , Figure 2 and Figure 3 The upper end of the side block 11 is provided with a first fixing plate 13. The front and rear ends of the first fixing plate 13 are provided with alignment groups corresponding to the positions of the placement slots 112. The alignment groups include two staggered guide rods 131. The two guide rods 131 are respectively provided with guide blocks 113 in the placement slots 112. The top of the side block 11 is also provided with a mating threaded hole between the two placement slots 112. The first fixing plate 13 is provided with a threaded countersunk hole corresponding to the position of the mating threaded hole on the side block 11. The mating threaded hole and the threaded countersunk hole are connected by a long screw thread.

[0050] See Figure 2 and Figure 4The upper end of the rear stop 12 is provided with a second fixing plate 14. The left and right sides of the second fixing plate 14 are provided with U-shaped locking blocks 141 corresponding to the positions of the limiting groove 121. The U-shaped locking blocks 141 are engaged with the limiting groove 121. The top of the rear stop 12 is provided with a mating threaded hole. The second fixing plate 14 is provided with a threaded countersunk hole corresponding to the position of the mating threaded hole on the rear stop 12. The mating threaded hole and the threaded countersunk hole are connected by a long screw thread.

[0051] The first fixing plate 13 further limits and fixes the docking assembly 5 after docking in the placement groove 112. Specifically, two guide rods 131 are respectively inserted into the guide block 113, and the first fixing plate 13 is threadedly fixed to the side stop block 11 by long screws. Similarly, the second fixing plate 14 further limits and fixes the limiting member 6 in the limiting groove 121. Specifically, the U-shaped locking block 141 is engaged and fixed with the limiting groove 121, and the second fixing plate 14 is threadedly fixed to the rear stop block 12 by long screws.

[0052] See Figure 2 and Figure 7 It also includes an alignment component 7, which includes two long rods 71 ​​disposed on the left and right sides of the side stop block 11. One long rod 71 is fixedly connected to a connecting rod 72 near the front side, and the other long rod 71 is fixedly connected to a connecting rod 72 near the rear side. The two long rods 71 ​​are provided with connecting grooves at the positions of the connecting rods 72 on the opposite side of the long rods 71. The two connecting rods 72 slide through the first reinforcing strip 31 and the limiting component 6. The first reinforcing strip 31 and the limiting component 6 are provided with alignment holes at the positions of the connecting rods 72. Specifically, the side of the long rod 71 away from the connecting rod 72 is slidably mounted on the guide rail system.

[0053] The two long bars 71 on the left and right sides are moved towards the side stop 11 at the same time. The connecting rod 72 on one long bar 71 is engaged with the connecting groove on the other long bar 71. The long bars 71 on both sides form a stable connection. The connecting rod 72 passes through the first reinforcing bar 31 and the connecting bar 4 in sequence to form multiple triangular structures. This not only increases the stability of its own connection, but also enhances the overall connection stability. The long bar 71 and the bottom support plate 1 can be fixed with pins or welded.

[0054] Finally, the support plate 2 and the bottom support plate 1 are fixed by threaded connection. The connection method is the same as that of the first fixing plate 13 and the side block 11, and will not be described again here.

[0055] After completing the above installation steps, the platform frame will be fully installed. The installed platform frame will be fixedly connected to the existing hydraulic system telescopic end and simultaneously slidably installed on the guide rail system.

[0056] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0057] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0058] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An ultra heavy duty hydraulic freight elevator characterized by: The platform frame comprises a bottom support plate (1) and a support plate (2) threadedly connected above the bottom support plate (1); the top end of the bottom support plate (1) is welded with a side stop block (11) on each of the left and right sides, and the top end of the bottom support plate (1) is welded with a rear stop block (12) on the rear side; A support reinforcing assembly (3) is arranged between the bottom support plate (1) and the support plate (2) to enhance the support strength of the bottom end of the support plate (2); The support reinforcing assembly (3) comprises two first reinforcing strips (31) crosswise and obliquely fixed at the top end of the bottom support plate (1) and two second reinforcing strips (32) fixedly connected between the front and rear ends of the two first reinforcing strips (31), and the bottom end of the second reinforcing strip (32) is fixedly connected to the top end of the bottom support plate (1); The opposite ends of the two side stop blocks (11) are symmetrically provided with a clearance slot (111) at the bottom end, the end of the first reinforcing strip (31) and the second reinforcing strip (32) abutting each other is located in the clearance slot (111), and the front and rear ends of the side stop block (11) are provided with a placement slot (112) penetrating through from top to bottom, the placement slot (112) is communicated with the clearance slot (111), and the placement slot (112) is provided with an abutting assembly (5); The front end of the rear stop block (12) on the rear side is fixedly connected with the rear end of the side stop block (11), and the top end of the rear stop block (12) is provided with two limiting grooves (121) penetrating through from top to bottom, a back-shaped abutting groove (122) is fixedly connected to the inner wall of the limiting groove (121) close to the top end, and the limiting groove (121) is provided with a limiting piece (6).

2. A heavy duty hydraulic freight elevator according to claim 1, characterized in that: The upper end of the side stop block (11) is provided with a first fixing plate (13), the front and rear ends of the first fixing plate (13) are provided with an alignment group at positions corresponding to the placement slots (112), the alignment group comprises two guide rods (131) arranged in a staggered manner, the two guide rods (131) are respectively provided with guide blocks (113) in the placement slots (112), an abutting threaded hole is formed in the top end of the side stop block (11) between the two placement slots (112), a threaded counterbore is formed in the first fixing plate (13) at a position corresponding to the abutting threaded hole in the side stop block (11), and the abutting threaded hole and the threaded counterbore are threadedly connected by a long screw.

3. A heavy duty hydraulic freight elevator according to claim 1, wherein: The upper end of the rear stop block (12) is provided with a second fixing plate (14), the left and right sides of the second fixing plate (14) are provided with a back-shaped clamping block (141) at positions corresponding to the limiting grooves (121); the back-shaped clamping block (141) is clamped and matched with the limiting groove (121), the top end of the rear stop block (12) is provided with an abutting threaded hole, a threaded counterbore is formed in the second fixing plate (14) at a position corresponding to the abutting threaded hole in the rear stop block (12), and the abutting threaded hole and the threaded counterbore are threadedly connected by a long screw.

4. A heavy duty hydraulic freight elevator according to claim 1, wherein: The docking assembly (5) comprises a trapezoidal clamping strip (51) fixedly connected to two adjacent side walls in the placing groove (112), a docking piece (52) clamped in the trapezoidal clamping strip (51), and guide blocks (113) with through holes fixedly connected to other two adjacent side walls in the placing groove (112); the docking piece (52) comprises a triangular block and a rectangular inclined strip integrally formed on the triangular block, the bottom end of the triangular block is fixedly connected to a connecting block, two sides of the triangular block and the rectangular block are provided with trapezoidal grooves, and the trapezoidal grooves are clamped and matched with the trapezoidal clamping strip (51).

5. A heavy duty hydraulic freight elevator according to claim 1, wherein: Each end of the first reinforcing strip (31) is provided with a set of matching grooves, each set of matching grooves comprises a docking vertical groove (311) close to the end of the first reinforcing strip (31) and a docking inclined groove (312) close to the docking vertical groove (311), the docking vertical groove (311) is clamped and matched with the connecting block at the bottom end of the docking piece (52), and the docking inclined groove (312) is clamped and matched with the rectangular strip on the docking piece (52).

6. A heavy duty hydraulic freight elevator according to claim 1, wherein: The second reinforcing strip (32) on the rear side is provided with a rectangular through groove (321) symmetrically arranged on the left and right sides, the second reinforcing strip (32) on the front side is provided with a stepped groove (322) symmetrically arranged on the left and right sides, the rectangular through groove (321) and the stepped groove (322) on the same side are arranged in one-to-one correspondence, and the positions corresponding to the rectangular through groove (321) and the stepped groove (322) on the two first reinforcing strips (31) are provided with a transition through groove (313).

7. A heavy duty hydraulic freight elevator according to claim 6, wherein: The front side of the connecting strip (4) is integrally formed with a rectangular protrusion, the rectangular protrusion is clamped and matched with the front side of the stepped groove (322), the rear end of the connecting strip (4) is provided with a limiting through groove (41), and the upper end of the connecting strip (4) and the front side of the limiting through groove (41) are provided with a limiting inclined groove (42).

8. A heavy duty hydraulic freight elevator according to claim 1, wherein: The limiting piece (6) comprises two rectangular vertical strips and has an inverted V-shaped structure, the rectangular vertical strip on the front side is arranged obliquely, the top end of the bottom supporting plate (1) is provided with a bottom end docking clamping groove (15) and a bottom end docking rectangular groove (16) corresponding to the position of the limiting piece (6) on the rear side, and the bottom end docking clamping groove (15) is located on the front side of the bottom end docking rectangular groove (16).

9. A heavy duty hydraulic freight elevator according to claim 1, wherein: The top end of one of the first reinforcing strips (31) is provided with a clamping groove, the bottom end of the other first reinforcing strip (31) is also provided with a clamping groove, the depth of the clamping groove is half the height of the first reinforcing strip (31), and the two clamping grooves are clamped and matched.

10. A heavy duty hydraulic freight elevator according to claim 1, wherein: Also include the alignment piece (7), the alignment piece (7) includes the two long strip bars (71) arranged in the left and right sides of the side stop (11), one long strip bar (71) is fixedly connected with the connecting rod (72) near the front side, the other long strip bar (71) is fixedly connected with the connecting rod (72) near the rear side, the positions of the connecting rod (72) on the two long strip bars (71) corresponding opposite sides are provided with connecting grooves, and the two connecting rods (72) are slid through the first reinforcing strip (31) and the limiting piece (6), the positions of the connecting rod (72) on the first reinforcing strip (31) and the limiting piece (6) are provided with alignment holes.

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