Trackless mold changing trolley capable of changing molds in two directions

Abstract

The utility model relates to a trackless die changing trolley capable of changing dies bidirectionally, which comprises a frame, a trolley platform, universal wheels, a transverse roller, a top plate, a longitudinal roller, a first lifting mechanism and a second lifting mechanism, the trolley platform is movably mounted at the top of the frame, and the first lifting mechanism and the second lifting mechanism are both arranged between the frame and the trolley platform. A connecting groove is formed in the top of the vehicle table in the front-back direction, the top plate is embedded in the connecting groove, the output end of the first lifting mechanism penetrates through the connecting groove to be connected with the top plate, the longitudinal rollers are sequentially hinged to the top plate in the longitudinal direction, and the output end of the second lifting mechanism is connected with the vehicle table. And the universal wheels are hinged to the bottom of the frame. According to the technical scheme, the die changing trolley can move freely and supports two-way die changing, so that the flexibility is high, the expansibility is good, the die changing trolley can be matched with various devices, die changing can be conducted smoothly in the complex production environment, and installation or operation of other devices is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to a die changing trolley technical field, more specifically to a die changing trolley without rail and bidirectional die changing. BACKGROUND

[0002] The die changing trolley is a kind of auxiliary equipment specially used for die changing, is widely used in injection molding machine, die casting machine, stamping machine and other production lines needing frequently changing die, and its main function is to simplify the die changing process, improve production efficiency, reduce the risk and labor intensity of manual operation.

[0003] The existing die changing trolley often has certain deficiencies in function, such as the automatic die changing trolley of CN220129351U, which includes a walking system and a die changing system, the walking system includes a movable walking frame assembly, the die changing system includes a support frame assembly that can be lifted on the walking frame assembly and an adjusting assembly for adjusting the height of the support frame assembly, the adjusting assembly includes a pad that can be movably arranged on the walking frame assembly, the pad can extend into the lower part of the support frame assembly and abut with the bottom of the support frame assembly to increase the horizontal height of the support frame assembly, and the die is placed on the support frame assembly, wherein the walking frame assembly includes a walking frame, wheels, a walking motor and a guide rail laid on the ground, and the walking frame is movably arranged on the guide rail through the wheels.

[0004] The above-mentioned die changing trolley belongs to the track type trolley, and the problem in the function aspect is that the guide rail of walking frame assembly keeps fixed extension direction after being laid, and the walking frame can only transfer the die along the preset route, which leads to poor expansibility, and the flexibility will also be greatly limited, and the track needs to occupy a certain ground space, especially in complex production environment, other equipment or channels may conflict, affecting the installation or operation of other equipment.

[0005] As shown in the Chinese patent with publication number CN214814216U and patent name "Multifunctional conversion operation table of die changing trolley", it is provided with an operation table and a top plate, the top of the operation table is in a "concave" shape, a pair of sliding grooves are formed on the inner walls of the two sides of the operation table, a pulley is slidingly installed in each of the sliding grooves, a first supporting rod is installed between the pulleys, a pair of first connecting pins are clamped and installed on the first supporting rod, a first connecting rod is installed on each of the first connecting pins through an axle pin, a second supporting rod is fixedly installed on the inner walls of the two sides of the operation table on the side of the sliding grooves, a pair of second connecting pins are clamped and installed on the second supporting rod, a second connecting rod is installed on each of the second connecting pins through an axle pin, a rotating shaft is arranged at the connection between the second connecting rod and the first connecting rod, and the other end of the second connecting rod and the first connecting rod is installed with the top plate through a pair of connecting pins, in addition, a plurality of grooves are formed on the surface of the top plate, a plurality of rollers are rotatably installed in the grooves, hydraulic telescopic supporting legs are installed at the four corners of the bottom end of the operation table, casters are installed on one side of the hydraulic telescopic supporting legs, and brake foot plates are arranged on the casters.

[0006] The top plate of the die changing trolley can be lifted, which can avoid the separation between the die changing trolley and the mold conveying table, thereby reducing the possibility of mold overturning, improving work efficiency, making the operation safer, and freely transporting the mold through the casters. However, the die changing trolley still has some defects in terms of function, mainly that when the mold is prevented on the top plate and pushed by the hydraulic clamp, it can only move in the same direction as the hydraulic clamp, resulting in a single die changing direction and poor flexibility. Utility model content

[0007] In view of the above situation, in order to overcome the problems of the existing die changing trolley being limited by the track, not being suitable for use in complex production environments, poor expansibility and flexibility, and single die changing direction also affecting flexibility, the purpose of the utility model is to provide a die changing trolley that can freely move and support bidirectional die changing, thereby having high flexibility, good expansibility, being able to match with various devices, and being able to smoothly change dies in complex production environments without affecting the installation or operation of other devices.

[0008] In order to achieve the above purpose, the technical solution of the utility model is:

[0009] The railless and bidirectional die changing trolley comprises a frame, a platform, universal wheels, transverse rollers, top plates, longitudinal rollers, a first lifting mechanism and a second lifting mechanism, the platform is movably installed on the top of the frame, the first lifting mechanism and the second lifting mechanism are both arranged between the frame and the platform, the transverse rollers are sequentially hinged on the platform from left to right, the top of the platform is provided with a connecting groove in the front-rear direction, the top plate is embedded in the connecting groove, the output end of the first lifting mechanism is connected with the top plate through the connecting groove, the longitudinal rollers are sequentially hinged on the top plate in the longitudinal direction, the output end of the second lifting mechanism is connected with the platform, and the universal wheels are hinged on the bottom of the frame.

[0010] Preferably, the first lifting mechanism comprises hydraulic rods, each top plate corresponds to two hydraulic rods, and the hydraulic rods are connected with the corresponding top plate.

[0011] Preferably, the second lifting mechanism comprises a lifting motor, a first coupling, a main gear box, an auxiliary gear box and a lifting rod, the main gear box is arranged on the output end of the lifting motor, the output end is connected with the input end of the auxiliary gear box through the first coupling, the output end of the auxiliary gear box is connected with the lifting rod, and the lifting rod is connected with the bottom of the platform.

[0012] Preferably, the main gear box comprises a first three-shaft gear box and a second three-shaft gear box, the number of the second three-shaft gear box is two, and the second three-shaft gear boxes are arranged on the left and right sides of the first three-shaft gear box, the number of the auxiliary gear box corresponds to the output end of the second three-shaft gear box, the first three-shaft gear box is arranged on the output end of the lifting motor, the output end is connected with the input end of the second three-shaft gear box through the first coupling, and the output end of the second three-shaft gear box is connected with the input end of the auxiliary gear box.

[0013] Preferably, it further comprises hydraulic feet, and the hydraulic feet are arranged on the bottom of the frame in parallel with the universal wheels.

[0014] Preferably, it further comprises support frames and pads, the pads are arranged on the frame, the support frames correspond to the pads and the hydraulic feet one by one, the support frames have horizontal plates and vertical plates, the support frames are connected with the pads through the vertical plates, the hydraulic feet are arranged on the top of the horizontal plates, and the piston rods of the hydraulic feet extend downward through the horizontal plates.

[0015] Preferably, it further comprises limiting pins, the top of the platform is provided with clamping grooves on the left and right sides, the clamping grooves correspond to the limiting pins one by one, the limiting pins are inserted into the clamping grooves, and the transverse rollers and the top plates are located between the clamping grooves on the two sides.

[0016] Preferably, it further comprises a fence and guide rods, the guide rods are arranged on the front and rear sidewalls of the platform, and the fence is correspondingly arranged on the guide rods and can slide along the guide rods.

[0017] Preferably, it further comprises a handle, the handle is arranged on the platform, and a pull ring is formed on the handle.

[0018] As preferred, it further comprises a fence and a foot support, the fence is arranged on the front and back sides of the frame and encloses the first lifting mechanism and the second lifting mechanism inside the frame, the foot support is arranged in the frame corresponding to the fence, and the fence is fixed to the frame through the foot support.

[0019] Compared with the prior art, the utility model has the advantages that:

[0020] The car platform of the die changing trolley can be lifted through the second lifting mechanism, so that the die changing trolley of different heights can be matched, the horizontal roller is arranged on the car platform to support the die in the left-right direction for die changing, the top plate that can be transported up and down relative to the car platform is arranged, the longitudinal roller is arranged on the top plate, the longitudinal roller can be transported up with the top plate to contact the die, so as to support the die in the front-rear direction for die changing, thereby the problem of single die changing direction is solved, the flexibility of die changing is improved, and meanwhile, the universal wheel is arranged to allow the die to be transported at any position, so that the limitation of the ground track is eliminated, so that the die changing trolley can transport the die between any number of die changing trolleys, and has excellent flexibility and adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the overall structure schematic diagram of the die changing trolley without installing the push-pull mechanism of the utility model;

[0022] Figure 2 It is the overall structure schematic diagram of the die changing trolley without installing the push-pull mechanism of the utility model from another perspective;

[0023] Figure 3 It is the overall structure schematic diagram of the die changing trolley without installing the push-pull mechanism of the utility model after the top plate is moved up;

[0024] Figure 4 It is the enlarged structure schematic diagram of A part of the utility model; Figure 3

[0025] Figure 5 It is the enlarged structure schematic diagram of B part of the utility model; Figure 3

[0026] Figure 6 It is the overall structure schematic diagram of the die changing trolley without installing the push-pull mechanism of the utility model after the limiting pin is removed;

[0027] Figure 7 It is the overall structure schematic diagram of the die changing trolley without installing the push-pull mechanism of the utility model after the frame is opened.

[0028] As shown in the figure:

[0029] ​​1, frame; 2, platform; 201, connecting groove; 202, clamping groove; 3, universal wheel; 4, transverse roller; 5, top plate; 6, longitudinal roller; 7, first lifting mechanism; 701, hydraulic rod; 8, second lifting mechanism; 801, lifting motor; 802, first coupling; 803, main gear box; 803a, first three-axis gear box; 803b, second three-axis gear box; 804, auxiliary gear box; 805, lifting rod; 9, hydraulic foot; 10, limit pin; 11, handle; 1101, pull ring; 12, coaming; 13, lead rod; 14, support frame; 1401, horizontal plate; 1402, vertical plate; 15, cushion block; 16, fence; 17, foot stand. DETAILED DESCRIPTION

[0030] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0031] In the description of the utility model, it needs to be explained that the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the utility model product is usually placed, and is only for the convenience of simplifying the description, and does not indicate or imply that the orientation must have a specific orientation and a specific orientation structure and operation, so it cannot be understood as a limitation on the utility model.

[0032] For example, Figures 1 to 4 And Figure 6As shown, the utility model relates to a trackless and bidirectional die changing trolley, it includes frame 1, car platform 2, universal wheel 3, transverse roller 4, roof 5, longitudinal roller 6, first lifting mechanism 7 and second lifting mechanism 8, the top of frame 1 has a inner chamber, car platform 2 is installed in the top of frame 1, the die is placed on car platform 2 when changing die, is supported through car platform 2, car platform 2 can be transported up and down relative to frame 1, ensure that can adapt to the die changing platform of different height, the number of transverse roller 4 has several, each transverse roller 4 is hinged on car platform 2 in proper order from left to right, and transverse roller 4 is protruding upwards relative to the top of car platform 2, thereby replacing the top of car platform 2 and die contact, transverse roller 4 allows die to transport along the left and right direction of car platform 2 when changing die and can also change sliding friction to rolling friction, make the transport of die can be more smooth and labor-saving, and further improve the efficiency of die changing operation, the top of car platform 2 is provided with connecting groove 201 along the front and back direction, roof 5 is embedded in connecting groove 201, roof 5 can be transported up and down in connecting groove 201, in initial state, the top of the top and the top of car platform 2 are flush, when transporting upwards, the top will exceed the top of car platform 2 and protrude relative to the top of car platform 2, the output end of first lifting mechanism 7 passes through connecting groove 201 and is connected with roof 5, first lifting mechanism 7 provides power for the up and down transport of roof 5, longitudinal roller 6 is hinged on roof 5 in longitudinal direction in proper order, and longitudinal roller shaft protrudes upwards relative to the top of car platform 2, it needs to be mentioned that the diameter of longitudinal roller shaft is less than transverse roller 4, which makes the protruding height of longitudinal roller shaft less than the protruding height of transverse roller 4 when roof 5 is in initial state, only when roof 5 is transported upwards under the action of first lifting mechanism 7 and is flush with transverse roller 4 or exceeds transverse roller 4, longitudinal roller 6 will allow die to transport along the front and back direction of car platform 2 when changing die, and also can change sliding friction to rolling friction, make the transport of die can be smooth and labor-saving, improve the efficiency of die changing operation, the output end of second lifting mechanism 8 is connected with car platform 2, and the lifting of car platform 2 is powered by second lifting mechanism 8, universal wheel 3 is arranged at the bottom of frame 1, and universal wheel 3 is hinged with frame 1, universal wheel 3 enables the die changing trolley of the utility model to be transported to any direction, the car platform 2 of the die changing trolley of the utility model can be controlled to lift through second lifting mechanism 8, so that the die changing platform of different height can be matched, and the transverse roller is arranged on car platform 2 to support die to transport in the left and right directions for die changing, the roof 5 that can transport up and down relative to car platform 2 is arranged, and the longitudinal roller shaft is arranged on roof 5, the longitudinal roller shaft can contact with die by transporting upwards with roof 5 to support die to transport in the front and back directions for die changing, thereby solve the problem of single die changing direction, significantly improve the flexibility of die changing, meanwhile, the setting of universal wheel 3 allows transportation at any position, which eliminates the limitation of ground track laying, so that the die changing trolley of the utility model can transport die between any number of die changing platforms, so it has excellent flexibility and adaptability.

[0033] As shown in Figure 7 The first lifting mechanism 7 includes hydraulic rods 701, two hydraulic rods 701 corresponding to each top plate 5, the hydraulic rods 701 are connected with the corresponding top plate 5, the hydraulic rods 701 as hydraulic components can provide strong pushing force, under the joint action of the two hydraulic rods 701, it ensures that the top plate 5 can be lifted to a high position and stably kept at the high position, and at the same time, the mold can also keep a fixed height when passing through the longitudinal roller in the mold changing process, ensuring smooth mold changing along the front-back direction.

[0034] As shown in Figure 7 The second lifting mechanism 8 includes a lifting motor 801, a first coupling 802, a main gear box 803, an auxiliary gear box 804 and a lifting rod 805, the main gear box 803 is arranged on the output end of the lifting motor 801, the main gear box 803 is driven by the lifting motor 801, and the output end of the main gear box 803 is connected with the input end of the auxiliary gear box 804 through the first coupling 802, the main gear box 803 drives the auxiliary gear box 804 when it is driven, the output end of the auxiliary gear box 804 is connected with the lifting rod 805, the lifting rod 805 drives the lifting through the auxiliary gear box 804, and the lifting rod 805 is connected with the bottom of the vehicle platform 2, the vehicle platform 2 can keep synchronous lifting when the lifting rod 805 moves, so as to adapt to the mold changing platform of different heights.

[0035] As shown in Figure 7 The main gear box 803 includes a first three-axis gear box 803a and a second three-axis gear box 803b, the number of the second three-axis gear box 803b is two, and they are arranged on the left and right sides of the first three-axis gear box 803a, the number of the auxiliary gear box 804 corresponds to the output end of the second three-axis gear box 803b, the first three-axis gear box 803a is arranged on the output end of the lifting motor 801 and is directly driven by the lifting motor 801, and the output end of the first three-axis gear box 803a is connected with the input end of the second three-axis gear box 803b through the first coupling 802, the first three-axis gear box 803a drives the two side second three-axis gear boxes 803b to run when it runs, the output end of the second three-axis gear box 803b is connected with the input end of the auxiliary gear box 804, and the auxiliary gear box 804 drives the lifting rod 805 to lift through the second three-axis gear box 803b.

[0036] Further, the number of the transverse roller 4 is four rows, and the number of the top plate 5 is four columns, based on the above setting, when the mold is transported and changed along the left-right direction or along the front-back direction, the number of contact points formed between the mold and the device will be increased, which ensures that the mold is placed flat, and at the same time, the force between the mold and the device can be dispersed, so that the mold is uniformly stressed, and the possibility of deformation damage in the mold changing process is reduced.

[0037] As shown in Figures 1 to 3 andFigure 6 As shown in the figure, it also includes hydraulic feet 9, which are arranged on the bottom of the frame 1 in parallel with the universal wheels 3, that is, the hydraulic feet 9 are used to support the platform 2 away from the ground during mold changing, thereby ensuring the smooth progress of the mold changing process.

[0038] As shown in the figure, Figures 1 to 3 and Figure 5 and Figure 6 As shown in the figure, it also includes support frames 14 and pads 15, which are arranged on the frame 1, specifically, the pads 14 are located on the side walls of the frame 1 near the bottom, and the support frames 14 correspond to the hydraulic feet 9 and the pads 15. In the utility model, there are four groups of support frames 14, pads 15 and hydraulic feet 9. The support frame 14 is composed of two parts, a horizontal plate 1401 and a vertical plate 1402, so that the overall shape is L-shaped. The support frame 14 is connected with the pad 15 through the vertical plate 1402, and the horizontal plate 1401 extends to the lateral direction of the frame 1. The hydraulic foot 9 is arranged on the top of the horizontal plate 1401 and is supported by the horizontal plate 1401. A limiting groove is formed in the horizontal plate 1401, which is a through groove penetrating the upper and lower end faces of the horizontal plate 1401. The piston rod of the hydraulic foot 9 is inserted into the limiting groove and extends downward through the limiting groove. The limiting groove can ensure that the piston rod of the hydraulic foot 9 can extend to the ground through the horizontal plate 1401 and limit the extension direction of the piston rod, ensuring linear extension. In this way, when the hydraulic foot 9 operates, the piston rod can move downward until it contacts the ground and lifts the frame 1.

[0039] As shown in the figure, Figure 1 , Figure 3 and Figure 6 As shown in the figure, it also includes limiting pins 10, and the left and right sides of the top of the platform 2 are provided with clamping grooves 202, which correspond to the limiting pins 10. The limiting pins 10 are inserted into the clamping grooves 202, and the limiting pins and the clamping grooves 202 are in a straight insertion type cooperation. The straight insertion type cooperation allows the limiting pins to be removed from the clamping grooves 202 as a detachable connection mode. The horizontal roller 4 and the top plate 5 are located between the clamping grooves 202 on both sides. When the limiting pins are located in the clamping grooves 202, the moving path of the mold in the left and right directions will be blocked, and the moving path in the front and back directions will also be blocked, thereby preventing the mold from being mistakenly moved onto the platform 2.

[0040] As shown in the figure, Figures 1 to 3 and Figure 5 As shown in the figure, it also includes surrounding plates 12 and lead screws 13. The lead screws 13 are arranged on the front and rear side walls of the platform 2, and the surrounding plates 12 are installed on the lead screws 13. The surrounding plates 12 can avoid deviation from the moving route during mold transfer, improving the accuracy of mold changing. The surrounding plates 12 can slide along the lead screws 13, and the distance between the two surrounding plates 12 can be adjusted by sliding, so as to adapt to molds of different sizes.

[0041] As Figures 1 to 3 And Figure 6 As shown in the drawings, it also includes handle 11, handle 11 is provided on the car platform 2, and the handle 11 is formed with a pull ring 1101, handle 11 for operating personnel hand to better force to frame 1, so as to move the utility model die changing platform trolley to any position.

[0042] As Figures 1 to 3 And Figure 6 And Figure 7 As shown in the drawings, it also includes the fence 16 and the foot stool 17, the fence 16 is arranged on both sides of the frame 1, and the first lifting mechanism 7 and the second lifting mechanism 8 are enclosed in the interior of the frame 1, so that the first lifting mechanism 7 and the second lifting mechanism 8 will be enclosed and protected, the foot stool 17 is installed in the frame 1 corresponding to the fence, the shape of the foot stool 17 is consistent with the shape of the support frame 14 of the hydraulic foot 9, that is, also L-shaped, the horizontal section of the foot stool 17 is connected with the frame 1, and the other end is connected with the fence 16, so that the fence 16 and the frame 1 are fixed, and the number of the foot stool 17 corresponding to each fence 16 in the utility model has multiple, so that the fixed point is increased to form a more stable connection between the frame 1.

[0043] In combination Figures 1 to 7 , the utility model die changing platform trolley can be pushed by the operator through the pull ring 1101 on the handle 11 when the die changing operation is carried out, the universal wheel 3 can move the frame 1 to any position in front of the die changing platform, then the first three-shaft gear box 803a of the main gear box 803 is driven to run by the lifting motor 801 of the second lifting mechanism 8, the second three-shaft gear box 803b is driven by the first three-shaft gear box 803a, and the vice gear box 804 is driven by the second three-shaft gear box 803b, the height of the car platform 2 is adjusted by the lifting rod 805 driven by the vice gear box 804, so that the car platform 2 can be flush with the die changing platform, then the mold can be moved to the car platform 2, then the fence 12 is controlled to move along the guide rod 13, so that the space surrounded by the fence 12 matches the mold, if the mold needs to be transported along the left and right directions of the car platform 2, the mold can be directly pushed to move, under the action of the transverse roller 4, the mold can be easily and labor-savingly pushed, if the die needs to be changed along the front and back directions of the car platform 2, the top plate 5 is lifted by the hydraulic rod 701 of the first lifting mechanism 7 until the height of the longitudinal roller 6 exceeds the transverse roller 4, that is, the mold can be transported in the same way.

[0044] The above examples and descriptions in the specification are only to illustrate the principles and best embodiments of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A trackless and bidirectional die-changing trolley, characterized in that, It includes frame (1), platform (2), universal wheel (3), transverse roller (4), top plate (5), longitudinal roller (6), first lifting mechanism (7) and second lifting mechanism (8), the platform (2) is movably mounted on the top of the frame (1), the first lifting mechanism (7) and the second lifting mechanism (8) are arranged between the frame (1) and the platform (2), the transverse roller (4) is hingedly arranged on the platform (2) from left to right, the top of the platform (2) is provided with a connecting groove (201) in the front-rear direction, the top plate (5) is embedded in the connecting groove (201), the output end of the first lifting mechanism (7) passes through the connecting groove (201) and is connected with the top plate (5), the longitudinal roller (6) is hingedly arranged on the top plate (5) in the longitudinal direction, the output end of the second lifting mechanism (8) is connected with the platform (2), and the universal wheel (3) is hingedly arranged on the bottom of the frame (1).

2. The trackless and bidirectional die-changing trolley according to claim 1, characterized in that, The first lifting mechanism (7) comprises a hydraulic rod (701), and each top plate (5) corresponds to two hydraulic rods (701), and the hydraulic rod (701) is connected with the corresponding top plate (5).

3. The trackless and bidirectional die-changing trolley according to claim 1 or 2, characterized in that, The second lifting mechanism (8) comprises a lifting motor (801), a first coupling (802), a main gear box (803), an auxiliary gear box (804) and a lifting rod (805), the main gear box (803) is arranged on the output end of the lifting motor (801), and the output end is connected with the input end of the auxiliary gear box (804) through the first coupling (802), the output end of the auxiliary gear box (804) is connected with the lifting rod (805), and the lifting rod (805) is connected with the bottom of the platform (2).

4. The trackless and bidirectional die-changing trolley according to claim 3, characterized in that, The main gear box (803) comprises a first three-axis gear box (803a) and a second three-axis gear box (803b), the number of the second three-axis gear box (803b) is two, and the second three-axis gear box (803b) is arranged on the left and right sides of the first three-axis gear box (803a), the number of the auxiliary gear box (804) corresponds to the output end of the second three-axis gear box (803b), the first three-axis gear box (803a) is arranged on the output end of the lifting motor (801), and the output end is connected with the input end of the second three-axis gear box (803b) through the first coupling (802), and the output end of the second three-axis gear box (803b) is connected with the input end of the auxiliary gear box (804).

5. The trackless and bidirectional die-changing trolley according to any one of claims 1, 2 or 4, characterized in that, It also comprises a hydraulic foot (9), and the hydraulic foot (9) is arranged on the bottom of the frame (1) in parallel with the universal wheel (3).

6. The trackless and bidirectional die-changing trolley according to claim 5, characterized in that, It also comprises a support frame (14) and a cushion block (15), the cushion block (15) is arranged on the frame (1), the support frame (14) corresponds to the cushion block (15) and the hydraulic foot (9) one by one, the support frame (14) has a horizontal plate (1401) and a vertical plate (1402), the support frame (14) is connected with the cushion block (15) through the vertical plate (1402), the hydraulic foot (9) is arranged on the top of the horizontal plate (1401), and the piston rod of the hydraulic foot (9) extends downward through the horizontal plate (1401).

7. The trackless and bidirectional die-changing trolley according to any one of claims 1, 2, 4 or 6, characterized in that, It further comprises limiting pins (10), the top of the car platform (2) is provided with a clamping groove (202) on the left and right sides, the clamping groove (202) corresponds to the limiting pin (10), the limiting pin (10) is inserted into the clamping groove (202), and the transverse roller (4) and the top plate (5) are located between the clamping grooves (202) on the left and right sides.

8. The trackless and bidirectional die-changing trolley according to claim 7, characterized in that, It further comprises a fence (12) and a lead screw (13), the lead screw (13) is arranged on the front and rear side walls of the car platform (2), and the fence (12) is correspondingly arranged on the lead screw (13) and can slide along the lead screw (13).

9. The trackless and bidirectional die changer trolley according to claim 8, wherein, It further comprises a handle (11), the handle (11) is arranged on the car platform (2), and a pull ring (1101) is formed on the handle (11).

10. The trackless and bidirectional die-changing trolley according to claim 9, characterized in that, It further comprises a fence (16) and a foot support (17), the fence (16) is arranged on the front and rear sides of the car frame (1) and encloses the first lifting mechanism (7) and the second lifting mechanism (8) in the car frame (1), the foot support (17) is arranged in the car frame (1) and corresponds to the fence (16), and the fence (16) is fixed to the car frame (1) through the foot support (17).

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