Counterweight die of excavator

Abstract

The utility model discloses an excavator counterweight mold, which relates to the technical field of molds, and comprises a bottom plate and a hollow rectangular frame plate positioned above the bottom plate, and further comprises a limiting unit arranged on the bottom plate and a pressing unit arranged on the rectangular frame plate, the limiting unit comprises a strip-shaped box, a bidirectional lead screw, a supporting transverse strip and a limiting plate. The pressing unit comprises a sliding rod, a sliding block, a rectangular box, a vertical lead screw, a vertical lead screw, a bearing transverse strip, a supporting vertical rod and a pressing plate. According to the utility model, the two supporting cross bars which are in threaded connection with the two-way screw rod relatively move under the action of stress, so that the two U-shaped limiting plates can be driven to adjust the distance on the top surface of the bottom plate, and after the two oppositely arranged limiting plates are close to each other, a space can be formed for placing parting sand and a pouring model; and after the two limiting plates are spaced apart, the parting sand and the pouring model can be taken down, a pressing space formed by equipment is flexible and stable, and the forming effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an excavator counterweight mold. Background Art

[0002] When manufacturing an excavator, a counterweight needs to be installed at the rear end of the excavator. When processing the excavator counterweight, an excavator counterweight mold is required. The excavator counterweight mold is to pour liquid metal into a casting cavity adapted to the shape of the part. After it cools and solidifies, an excavator counterweight part or blank can be obtained. When a general excavator counterweight mold is used, parting sand needs to be poured between baffle A and baffle B, and then the prepared model is placed in the parting sand. After pressing the parting sand to make it firm, casting is carried out. Generally, the parting sand is pressed manually, which may cause voids in the parting sand, thus affecting the final cast product. Therefore, improvement is needed.

[0003] The publication (announcement) number is CN218638521, which discloses an excavator counterweight mold, relating to the technical field of molds, including a main frame. A tool groove is provided on one side of the main frame. A casting hole is provided at one side of the top of the main frame. A chute A is provided at a position on the top of the main frame away from the casting hole. A bracket is provided at the top of the chute A. A sleeve is provided at the top of the bracket. A threaded rod runs through the bottom of the sleeve. A pressing block is fixedly installed at the bottom of the threaded rod. A bearing is provided at the intersection of the sleeve and the bracket, and the inner shaft of the bearing is fixedly installed with the sleeve. In the utility model, through the setting of the threaded rod and the pressing block, when pressing the parting sand, only by rotating the threaded rod, the pressing block can be used to squeeze the parting sand, so that the air in the parting sand is squeezed out, avoiding the phenomenon that the final casting result is affected due to insufficient extrusion of the parting sand, and making the excavator counterweight mold more convenient to use.

[0004] Although the above solution makes the excavator counterweight mold more convenient to use, when the threaded rod rotates, it will drive the pressing block to rotate synchronously. When the pressing block cannot rotate in the pressing space, it is difficult to descend to complete the pressing process of the parting sand. The equipment is unstable in pressing the parting sand, and when baffle A and baffle B are assembled through the chute to form a pressing space, they are prone to displacement, which will cause the displacement of the parting sand and the casting model, affecting the forming effect. For this reason, we propose an excavator counterweight mold. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide an excavator counterweight mold. By setting a limiting unit and a pressing unit, the problems that the equipment is unstable in pressing the parting sand and is prone to displacement when forming a pressing space, which will cause the displacement of the parting sand and the casting model and affect the forming effect, are solved.

[0006] To solve the above technical problems, the present utility model is realized through the following technical solutions: An excavator counterweight mold, including a bottom plate and a rectangular frame plate located above the bottom plate and hollow inside, further including: a limiting unit arranged on the bottom plate and a pressing unit arranged on the rectangular frame plate;

[0007] The limiting unit includes a strip box, a bidirectional screw rod, a supporting cross bar, and a limiting plate. There are two strip boxes in total, which are symmetrically and fixedly arranged on the top surface of the bottom plate through the first struts. The bidirectional screw rod is movably arranged on the inner wall of one of the strip boxes. There are four supporting cross bars in total, which are equally divided into two groups. One group of supporting cross bars respectively corresponds to and cooperates with the positive and negative two sections of the symmetrically arranged threads on the bidirectional screw rod. A "U"-shaped limiting plate is correspondingly fixedly arranged between every two supporting cross bars located on the same horizontal center plane, and the two limiting plates are arranged oppositely. One end of the bidirectional screw rod that movably extends outside the strip box is fixedly provided with a first turntable;

[0008] The pressing unit includes a sliding rod, a sliding block, a rectangular box, a vertical screw rod, a bearing cross bar, a supporting vertical rod, and a pressing plate. The rectangular frame plate is fixedly arranged above the strip box through the second struts. Two strip-shaped chutes are symmetrically opened on the top surface of the rectangular frame plate. There are two sliding rods in total, which are respectively fixed on the two strip-shaped chutes. The two sliding blocks are respectively movably arranged on the outer circumferential surfaces of the two sliding rods. The two rectangular boxes are respectively fixedly arranged at the tops of the two sliding blocks. The vertical screw rod is movably arranged on the inner wall of one of the rectangular boxes. The bearing cross bar extends into the two rectangular boxes and is threadedly connected with the vertical screw rod. The supporting vertical rod is fixedly arranged at the center of the bottom surface of the bearing cross bar. The pressing plate is fixedly arranged at the bottom end of the supporting vertical rod. One end of the vertical screw rod that movably extends outside the rectangular box is fixedly provided with a second turntable.

[0009] Preferably, the limiting unit further includes a first guide rod, which is fixedly arranged on the inner wall of the other strip box and movably penetrates through the other two supporting cross bars.

[0010] Preferably, the pressing unit further includes a second guide rod, which is fixedly arranged on the inner wall of the other rectangular box and movably penetrates through the bearing cross bar.

[0011] Preferably, the vertical screw rod and the bidirectional screw rod are arranged perpendicular to each other.

[0012] Preferably, there are four first struts and second struts in total, which are distributed in a rectangular array.

[0013] Preferably, feet are fixedly arranged at the corners of the bottom surface of the bottom plate.

[0014] Compared with the prior art, the excavator counterweight mold of the present utility model has the following beneficial effects:

[0015] 1. In the utility model, a limiting unit is provided and the bidirectional screw can be controlled to rotate forward and backward on the strip box by holding the first turntable. Two of the supporting cross bars threadedly connected to the bidirectional screw can be subjected to force and move relative to each other to drive two "凵"-shaped limiting plates to adjust the spacing on the top surface of the bottom plate. The other two supporting cross bars can slide and translate on the first guide rod to cooperate with the limiting plates to mobilize and provide auxiliary support and guidance for them. When the two relatively arranged limiting plates are close to each other, a space can be formed to place the parting sand and the casting model. When the two limiting plates are spaced apart, the parting sand and the casting model can be removed. The pressing space formed by the equipment is flexible and stable to ensure the molding effect.

[0016] 2. In the utility model, by setting a pressing unit, the two rectangular boxes can be adjusted on the strip slide groove as a whole through a slider movably set on the outer peripheral surface of the slide rod to help the pressure plate adjust its position; after the pressure plate reaches directly above the two limit plates, the vertical screw rod can be controlled to rotate forward and reverse on the rectangular box by holding the second turntable; the load-bearing cross bar threadedly connected to the vertical screw rod can be lifted and lowered between the two rectangular boxes under the action of force; the second guide rod can cooperate with the load-bearing cross bar to slide and lift and provide auxiliary support for it; the supporting vertical rod drives the pressure plate to lift and lower accordingly; the pressure plate enters the two limit plates to press the parting sand, and the equipment can press the parting sand stably and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of an excavator counterweight mold of the utility model;

[0019] Figure 2 This is a front view structural schematic diagram of an excavator counterweight mold of the utility model;

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0021] Figure 4 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at the middle BB;

[0022] Figure 5 The utility model is a schematic diagram of the top view of the structure of an excavator counterweight mold.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Bottom plate;

[0025] 2. Limiting unit; 201. Strip box; 202. Bi-directional lead screw; 203. Support cross bar; 204. Limit plate; 205. First guide rod;

[0026] 3. Pressing unit; 301. Slide rod; 302. Slide block; 303. Rectangular box; 304. Vertical lead screw; 305. Bearing cross bar; 306. Support vertical rod; 307. Pressing plate; 308. Second guide rod;

[0027] 4. Rectangular frame plate;

[0028] 5. Support feet. Detailed implementation manners

[0029] To make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with the detailed implementation manners.

[0030] 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", "two ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the 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 understood as indicating or implying relative importance.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, 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 situations.

[0032] Embodiment 1

[0033] As shown in Figure 1 , Figure 3 , Figure 4 and Figure 5 , an excavator counterweight mold includes a bottom plate 1 and a rectangular frame plate 4 located above the bottom plate 1 and having a hollow interior, and further includes: a limiting unit 2 provided on the bottom plate 1 and a pressing unit 3 provided on the rectangular frame plate 4;

[0034] The limiting unit 2 includes a strip box 201, a bidirectional lead screw 202, a supporting cross bar 203 and a limiting plate 204. There are two strip boxes 201 in total, which are symmetrically and fixedly arranged on the top surface of the bottom plate 1 through the first support columns. The bidirectional lead screw 202 is movably arranged on the inner wall of one of the strip boxes 201. There are four supporting cross bars 203 in total, which are equally divided into two groups. One group of supporting cross bars 203 respectively corresponds to and is matched with the positive and negative two sections of threads symmetrically arranged on the bidirectional lead screw 202. A limiting plate 204 in a "U" shape is fixedly arranged correspondingly between every two supporting cross bars 203 located on the same horizontal center plane, and the two limiting plates 204 are arranged oppositely;

[0035] The pressing unit 3 includes a sliding rod 301, a sliding block 302, a rectangular box 303, a vertical lead screw 304, a bearing cross bar 305, a supporting vertical rod 306 and a pressing plate 307. The rectangular frame plate 4 is fixedly arranged above the strip box 201 through the second support columns. Two strip-shaped chutes are symmetrically opened on the top surface of the rectangular frame plate 4. There are two sliding rods 301 in total, which are respectively fixed on the two strip-shaped chutes. Two sliding blocks 302 are respectively movably arranged on the outer circumferential surfaces of the two sliding rods 301. Two rectangular boxes 303 are respectively fixedly arranged at the tops of the two sliding blocks 302. The vertical lead screw 304 is movably arranged on the inner wall of one of the rectangular boxes 303. The bearing cross bar 305 extends into the two rectangular boxes 303 and is threadedly connected with the vertical lead screw 304. The supporting vertical rod 306 is fixedly arranged at the center of the bottom surface of the bearing cross bar 305. The pressing plate 307 is fixedly arranged at the bottom end of the supporting vertical rod 306.

[0036] Furthermore, the limiting unit 2 further includes a first guide rod 205. The first guide rod 205 is fixedly arranged on the inner wall of the other strip box 201 and movably penetrates through the other two supporting cross bars 203.

[0037] Furthermore, the vertical lead screw 304 and the bidirectional lead screw 202 are arranged perpendicular to each other.

[0038] Furthermore, there are four first support columns and four second support columns, and they are distributed in a rectangular array.

[0039] Furthermore, feet 5 are fixedly arranged at the corners of the bottom surface of the bottom plate 1.

[0040] The limiting unit 2 enables the equipment to form a pressing space that is flexible and stable, ensuring the forming effect.

[0041] Embodiment 2

[0042] Such as Figure 1 、 Figure 2 、 Figure 4 And Figure 5As shown in the figure, an excavator counterweight mold includes a bottom plate 1 and a rectangular frame plate 4 located above the bottom plate 1 and having a hollow interior. It further includes: a limiting unit 2 provided on the bottom plate 1 and a pressing unit 3 provided on the rectangular frame plate 4;

[0043] The limiting unit 2 includes a strip box 201, a bidirectional lead screw 202, a supporting cross bar 203, and a limiting plate 204. There are two strip boxes 201 in total, which are symmetrically and fixedly arranged on the top surface of the bottom plate 1 through the first struts. The bidirectional lead screw 202 is movably arranged on the inner wall of one of the strip boxes 201. There are four supporting cross bars 203 in total, which are equally divided into two groups. One group of supporting cross bars 203 respectively corresponds to and is engaged with the symmetrically arranged positive and negative two-thread segments on the bidirectional lead screw 202. A "U"-shaped limiting plate 204 is fixedly arranged correspondingly between every two supporting cross bars 203 located on the same horizontal center plane, and the two limiting plates 204 are arranged oppositely;

[0044] The pressing unit 3 includes a sliding rod 301, a sliding block 302, a rectangular box 303, a vertical lead screw 304, a vertical lead screw 304, a bearing cross bar 305, a supporting vertical rod 306, and a pressing plate 307. The rectangular frame plate 4 is fixedly arranged above the strip box 201 through the second struts. Two strip-shaped chutes are symmetrically opened on the top surface of the rectangular frame plate 4. There are two sliding rods 301 in total, which are respectively fixed on the two strip-shaped chutes. Two sliding blocks 302 are respectively movably arranged on the outer circumferential surfaces of the two sliding rods 301. Two rectangular boxes 303 are respectively fixedly arranged at the tops of the two sliding blocks 302. The vertical lead screw 304 is movably arranged on the inner wall of one of the rectangular boxes 303. The bearing cross bar 305 extends into the two rectangular boxes 303 and is threadedly connected to the vertical lead screw 304. The supporting vertical rod 306 is fixedly arranged at the center of the bottom surface of the bearing cross bar 305. The pressing plate 307 is fixedly arranged at the bottom end of the supporting vertical rod 306.

[0045] Furthermore, the pressing unit 3 further includes a second guide rod 308. The second guide rod 308 is fixedly arranged on the inner wall of the other rectangular box 303 and movably penetrates through the bearing cross bar 305.

[0046] Furthermore, the vertical lead screw 304 and the bidirectional lead screw 202 are arranged perpendicular to each other.

[0047] Furthermore, there are four first struts and four second struts, and they are distributed in a rectangular array.

[0048] Furthermore, feet 5 are fixedly arranged at the corners of the bottom surface of the bottom plate 1.

[0049] By means of the pressing unit 3, the pressing operation of the equipment on the parting sand is stable and simple.

[0050] The working principle of the present invention is as follows:

[0051] The first turntable is controlled to control the bidirectional screw rod 202 to rotate forward and backward on the strip box 201. Two of the support cross bars 203 threadedly connected to the bidirectional screw rod 202 are subjected to relative movement under the force to drive two "凵"-shaped limit plates 204 to adjust the spacing on the top surface of the bottom plate 1. The other two support cross bars 203 slide and translate on the first guide rod 205 to cooperate with the limit plates 204 to adjust. The two relatively arranged limit plates 204 are close to form a space for placing parting sand and casting models. The two rectangular boxes 303 are moved by the slider 3 movably arranged on the outer circumference of the slide rod 301. 02 Perform overall translation adjustment on the strip slide to help the pressure plate 307 adjust its position. After the pressure plate 307 reaches directly above the two limit plates 204, hold the second turntable to control the vertical screw rod 304 to rotate forward and backward on the rectangular box 303. The load-bearing cross bar 305 threadedly connected to the vertical screw rod 304 is subjected to force to rise and fall between the two rectangular boxes 303. The second guide rod 308 cooperates with the load-bearing cross bar 305 to slide and rise, and the supporting vertical rod 306 drives the pressure plate 307 to rise and fall. The pressure plate 307 enters the two limit plates 204 to press the parting sand.

[0052] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An excavator counterweight mold, comprising a bottom plate (1) and a rectangular frame plate (4) located above the bottom plate (1) and having a hollow interior, characterized in that: It further includes: A limiting unit (2) disposed on the bottom plate (1) and a pressing unit (3) disposed on the rectangular frame plate (4); The limiting unit (2) includes a strip-shaped box (201), a bidirectional lead screw (202), a supporting cross bar (203), and a limiting plate (204). There are two strip-shaped boxes (201) in total, which are symmetrically and fixedly arranged on the top surface of the bottom plate (1) through the first struts. The bidirectional lead screw (202) is movably disposed on the inner wall of one of the strip-shaped boxes (201). There are four supporting cross bars (203) in total, which are equally divided into two groups. One group of supporting cross bars (203) respectively corresponds to and cooperates with the positive and negative two sections of the threads symmetrically arranged on the bidirectional lead screw (202). A "U"-shaped limiting plate (204) is fixedly arranged correspondingly between every two supporting cross bars (203) located on the same horizontal center plane, and the two limiting plates (204) are arranged oppositely; The pressing unit (3) includes a sliding rod (301), a sliding block (302), a rectangular box (303), a vertical lead screw (304), a bearing cross bar (305), a supporting vertical rod (306), and a pressing plate (307). The rectangular frame plate (4) is fixedly arranged above the strip-shaped box (201) through the second struts. Two strip-shaped chutes are symmetrically opened on the top surface of the rectangular frame plate (4). There are two sliding rods (301) in total, which are respectively fixed on the two strip-shaped chutes. The two sliding blocks (302) are respectively movably disposed on the outer circumferences of the two sliding rods (301). The two rectangular boxes (303) are respectively fixedly arranged at the tops of the two sliding blocks (302). The vertical lead screw (304) is movably disposed on the inner wall of one of the rectangular boxes (303). The bearing cross bar (305) extends into the two rectangular boxes (303) and is threadedly connected to the vertical lead screw (304). The supporting vertical rod (306) is fixedly arranged at the center of the bottom surface of the bearing cross bar (305). The pressing plate (307) is fixedly arranged at the bottom end of the supporting vertical rod (306).

2. The excavator counterweight mold according to claim 1, characterized in that: The limiting unit (2) further includes a first guide rod (205), and the first guide rod (205) is fixedly arranged on the inner wall of the other strip-shaped box (201) and movably penetrates through the other two supporting cross bars (203).

3. The excavator counterweight mold according to claim 1, characterized in that: The pressing unit (3) further includes a second guide rod (308), and the second guide rod (308) is fixedly arranged on the inner wall of the other rectangular box (303) and movably penetrates through the bearing cross bar (305).

4. The excavator counterweight mold according to claim 1, characterized in that: The vertical lead screw (304) and the bidirectional lead screw (202) are arranged perpendicular to each other.

5. The excavator counterweight mold according to claim 1, characterized in that: There are four first struts and second struts respectively, and they are distributed in a rectangular array.

6. The excavator counterweight mold according to claim 1, characterized in that: Foot supports (5) are fixedly arranged at the corners of the bottom surface of the bottom plate (1).

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