CN208302957U - sand crusher - Google Patents

Abstract

The utility model discloses a kind of sand crushers, its key points of the technical solution are that including the casing of bottom-open formula, the both ends of the casing are provided with inlet port and outlet port, the feed cap being respectively articulated on the feed inlet and the discharge port and discharging lid；Crushing mechanism is provided in the casing；The casing is equipped with the bracket that casing is hanging；The bottom of the casing is provided with conveying mechanism；One end in the casing close to the discharge port is provided with crushing mechanism again, the crushing mechanism again includes parallel with the conveyer belt transmission direction and is located at the rotation axis at casing width direction center, upper end and rotation axis rotation connection and lower end is fixedly connected with the oscillating rod of gravity drop hammer, the power mechanism for driving oscillating rod to be swung, and gravity drop hammer can be contacted with the conveyer belt upper surface when oscillating rod is vertical.The utility model solves the problems, such as that the crushing effect of sand crusher is bad.

Description

Sand crusher

Technical field

The utility model relates to general machinery equipment manufacturing technology fields, more specifically, it is related to a kind of sand lump breaking Machine.

Background technique

In construction projects, sand is a kind of very important construction material, but when sand meets water, can form sand Block is difficult to be uniformly mixed with other materials in use, influences architectural effect, at this moment just needs to carry out sand lump using crusher It is broken.

It can refer to and disclosed in the Chinese utility model patent file that Authorization Notice No. is CN2181332Y in the prior art A kind of wet clay hammer mill and stoner, are made of transmission main shaft, base bearing, rotor and casing, without closing in casing The arc-shaped bottom sieve of formula, bottom are the bottomless discharge port of open type, and open type stream sieve can be set under discharge port, is equipped with hammer leaf on rotor.

Existing this wet clay hammer mill and stoner, the bottom of casing are the bottomless discharge port of open type, rotor Hammer leaf rotation is driven, the sand lump being crushed by hammer leaf is directly fallen on open type stream sieve by the bottomless discharge port of open type, to sand The crushing effect of block is bad.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of sand crusher, it can After the completion of crushing mechanism is broken, sand lump is crushed again in discharge outlet, crushing effect is good, is crushed complete.

To achieve the above object, the utility model provides following technical solution: a kind of sand crusher, including bottom is spacious The casing of open type, the both ends of the casing are provided with inlet port and outlet port, cut with scissors respectively on the feed inlet and the discharge port The feed cap and discharging lid being connected to；Crushing mechanism is provided in the casing；The casing is equipped with the bracket that casing is hanging； The bottom of the casing is provided with conveying mechanism, and the conveying mechanism includes transmission direction by the feed inlet to the discharge port Conveyer belt and provide the transport motor of power for the conveyer belt, the upper layer of the conveyer belt and the bottom of the casing connect Touching, the width of the conveyer belt are of same size with the casing；One end in the casing close to the discharge port is provided with Crushing mechanism again, the crushing mechanism again include parallel with the conveyer belt transmission direction and are located at casing width direction center Rotation axis, upper end and rotation axis rotation connection and lower end are fixedly connected with the oscillating rod of gravity drop hammer, oscillating rod are driven to be swung Power mechanism, the oscillating rod when vertical the gravity drop hammer can be contacted with the conveyer belt upper surface.

By using above-mentioned technical proposal, open feed cap and discharging lid, sand lump placed on a moving belt, conveyer belt with Casing is of same size, can prevent sand lump from falling from conveyer belt, opens transport motor, and sand lump is transmitted to by conveyer belt by feed inlet During discharge port, by crushing mechanism, crushing mechanism is crushed sand lump, broken sand lump from conveyer belt continue to Discharge port transport, can be crushed again sand lump close to the crushing mechanism again of discharge port, power mechanism drive oscillating rod into Row is swung, and the gravity drop hammer for being connected to oscillating rod bottom end can stir sand lump, is crushed again, is crushed again by setting Mechanism can make sand lump breaking abundant, and crushing effect is preferable.

The utility model is further arranged to: the dynamic structure include be fixed on casing inner wall again be crushed motor, by Motor output shaft is crushed again to drive the cam of rotation, the fixed block for being fixed on casing inner wall, pass through fixed block and slide with fixed block It moves the sliding bar of connection, be fixed on sliding bar close to the fixture block of cam one end, one end and the fixed block close to the side of cam It is fixedly connected and adjustable spring that the other end is fixedly connected with the fixture block close to one end of fixed block, the sliding bar is far from institute The one end and the oscillating rod for stating cam are rotatablely connected.

By using above-mentioned technical proposal, then broken motor band moving cam rotates, and cam and fixture block cooperate, fixture block drive with For its sliding bar being fixedly connected in the enterprising line slip of fixed block, the oscillating rod with sliding bar rotation connection can be in the drive of sliding bar Under swung, the sand lump on conveyer belt is stirred, keeps sand lump breaking abundant.

The utility model is further arranged to: the gravity drop hammer is designed in inverted conical shape.

By using above-mentioned technical proposal, for the gravity drop hammer of inverted conical shape when swinging, the vertex of circular cone is downward, can pass through Sand lump stirs sand lump, and sand lump is crushed, and crushing effect is good, is crushed complete.

The utility model is further arranged to: the side of the gravity drop hammer offers parallel with the conveyer belt transmission direction Through-hole.

By using above-mentioned technical proposal, gravity drop hammer is swung under the drive of oscillating rod, when the axis side of oscillating rod When to transmission direction perpendicular to conveyer belt, straight down, the sand lump on conveyer belt is continued to move forward gravity drop hammer by conveyer belt conveying, Gravity drop hammer straight down can cause to hinder to the sand lump of advance, start parallel with conveyer belt transmission direction lead on gravity drop hammer Hole can be such that the sand lump to advance passes through from through-hole, will not cause to hinder to sand lump.

The utility model is further arranged to: the through-hole is designed in up-side down triangle.

The utility model is further arranged to: is provided in the casing on the bracket below the crushing mechanism Support flitch, it is described support flitch upper end contacted with the bottom end on the conveyer belt upper layer.

By using above-mentioned technical proposal, support flitch is arranged in the lower section of crushing mechanism, crushing mechanism can be made to biography When the sand lump taken being sent to be crushed, conveyer belt is supported, is prevented because conveyer belt is too soft, by crushing mechanism rotary force When, it moves down, crushing mechanism is difficult to continue to be crushed to the sand lump on conveyer belt, is supported conveyer belt using support flitch Come, can make crushing mechanism when broken, can be crushed completely.

The utility model is further arranged to: the elevator that can make to support flitch oscilaltion is provided on the bracket Structure.

By using above-mentioned technical proposal, the lifting of support flitch is controlled using elevating mechanism, liftable support flitch can When crushing mechanism is crushed the sand lump on conveyer belt, prevent from causing crushing mechanism pair because support flitch support strength is too high Conveyer belt on support flitch causes to damage, and liftable support flitch can make to pass when crushing mechanism and conveyer belt contact It send band that there is certain buffering, can prevent crushing mechanism from causing to damage to conveyer belt.

The utility model is further arranged to: the elevating mechanism includes being fixed on support flitch bottom surface and sliding with the bracket The fixed link for moving connection, the spring being set in fixed link pass through the nut that the bracket threaded one end is connect, institute with fixed link State that spring one end is fixedly connected with the support flitch bottom and the other end is fixedly connected with the bracket.

By using above-mentioned technical proposal, the sand lump on conveyer belt applies pressure, one end and support flitch bottom surface to support flitch It is fixedly connected and the compression of spring stress that the other end is fixedly connected with bracket, the fixed link stress for being fixed on support flitch bottom surface is being propped up It is slid downwards on frame, passes through the nut that bracket threaded one end is connect with fixed link, sliding of the fixed link on bracket can be controlled Length, and then the adjustable height of support flitch is controlled, support flitch upper conveyor belt can be controlled at a distance from crushing mechanism in casing, control Degree of crushing processed, it is simple and convenient, it is easily operated.

The utility model is further arranged to: the support flitch bottom is fixedly connected with the sliding being set on the spring It manages, is fixedly connected on the bracket and the sliding pipe slides the casing connected.

By using above-mentioned technical proposal, when support flitch moves down, spring-compressed is fixed on the cunning of support flitch bottom surface It moves pipe to move down, to lower sliding in casing, guiding role is played to support flitch, and slide pipe and casing and be set in spring On, it can prevent dust accretions on spring when conveyer belt transmits sand lump, influence the service life of spring.

The utility model is further arranged to: addi-tional crusher mechanism, the addi-tional crusher mechanism are provided in the casing Between the crushing mechanism and the crushing mechanism again, the addi-tional crusher mechanism include be fixed on the casing inner wall and Axis direction is fixed in the hanger bar and another with the orthogonal hanger bar of transmission direction of the conveyer belt and one end End naturally droops can be with the chain of the conveyer belt upper-end contact.

By using above-mentioned technical proposal, by the broken sand lump of crushing mechanism, conveyer belt is transported to close to out At material mouth, does not reach between crushing mechanism again, using addi-tional crusher mechanism, sand lump is being crushed again, one end is fixed on In hanger bar, the chain that the other end naturally droops, and the lower end of chain can be contacted with conveyer belt, in the process of transmission tape travel In, chain can streak between the sand lump on conveyer belt, can sufficiently be crushed to sand lump, make broken complete, broken effect Fruit is preferable.

In conclusion the utility model has the following beneficial effects:

(1) the utility model by can in setting include the oscillating rod of the fixed gravity drop hammer in bottom end and drive oscillating rod pendulum The crushing mechanism again of dynamic power mechanism drives oscillating rod to be swung using power mechanism, and gravity drop hammer can be on conveyer belt Sand lump is crushed, and sand lump breaking can be made abundant；

(2) lower end of addi-tional crusher mechanism of the setting including chain between crushing mechanism and again crushing mechanism, chain is solid Surely there is broken pendant, can be streaked using broken pendant between sand lump during conveyer belt transports sand lump, it is right Sand lump carries out addi-tional crusher, and sand lump breaking can be made complete；

(3) it is used to support the support flitch of conveyer belt in bottom of shell setting, and elevating mechanism is set in the case where supportting flitch, it can Enable to support flitch oscilaltion, when crushing mechanism is crushed the sand lump on conveyer belt, support flitch can be to conveyer belt Buffer function is played, prevents crushing mechanism from damaging to conveyer belt.

Detailed description of the invention

Fig. 1 is the integrally-built axonometric drawing of embodiment；

Fig. 2 is to embody crushing mechanism again and the axonometric drawing made；

Fig. 3 is to embody the axonometric drawing for supportting flitch and making；

Fig. 4 is the portion A enlarged diagram in Fig. 3；

Fig. 5 is to embody crushing mechanism and the axonometric drawing made；

Fig. 6 is the portion B enlarged diagram in Fig. 5；

Fig. 7 is the portion C enlarged diagram in Fig. 5；

Fig. 8 is the axonometric drawing made to embody the connection relationship of crushing mechanism and second-time breakage mechanism；

Fig. 9 is the axonometric drawing of the crushing mechanism again of embodiment；

Figure 10 is the portion D enlarged diagram in Fig. 9；

Figure 11 is to embody addi-tional crusher mechanism and the axonometric drawing made;

Figure 12 is the portion E enlarged diagram in Figure 11.

In figure: 1, casing；11, feed inlet；111, feed cap；112, handle is fed；12, discharge port；121, discharging lid； 122, discharge handle；13, support rod；2, bracket；21, support plate；3, conveying mechanism；31, conveyer belt；32, transport motor；33, Support flitch；34, elevating mechanism；341, fixed link；342, spring；343, nut；344, sliding pipe；345, casing；4, crusher Structure；41, swingle；411, driven wheel two；412, belt two；42, crushing members；421, it is crushed column；422, broken blade；423, it breaks Broken needle；43, it is crushed motor；431, driving wheel；432, driven wheel one；433, belt one；434, shield；435, fixed plate；5, Second-time breakage mechanism；51, rotating bar；511, driven wheel three；52, second-time breakage part；521, rotating vane；522, second-time breakage Column；523, second-time breakage needle；6, crushing mechanism again；61, rotation axis；62, oscillating rod；63, gravity drop hammer；631, through-hole；632, square Shape block；633, groove；634, fixing bolt；64, power mechanism；641, it is crushed motor again；642, cam；643, fixed block； 644, bar is slid；645, fixture block；646, adjustable spring；647, disk；7, addi-tional crusher mechanism；71, hanger bar；711, it positions Column；72, chain；721, it is crushed pendant.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

Embodiment: a kind of sand crusher, referring to Fig. 1 and Fig. 2, the casing 1 including bottom-open, casing 1 is by 2, bracket Support is hanging, and 1 bottom of casing is provided with conveying mechanism 3, and 1 both ends of casing are provided with feed inlet 11 and discharge port 12,11 He of feed inlet Be respectively articulated on discharge port 12 feed cap 111 and discharging lid 121, feed cap 111 and be above provided with charging handle 112, discharge Discharging handle 122 is provided on lid 121.It is provided with crushing mechanism 4 and second-time breakage mechanism 5 in casing 1, it is close in casing 1 One end of discharge port 12 is provided with crushing mechanism 6 again, also sets up between second-time breakage mechanism 5 and again crushing mechanism 6 in casing 1 There is addi-tional crusher mechanism 7.

Referring to Fig. 1 and Fig. 3, conveying mechanism 3 includes transmission direction by the conveyer belt 31 of feed inlet 11 to discharge port 12 and is Conveyer belt 31 provides the transport motor 32 of power, and the upper layer of conveyer belt 31 contacts with the bottom of casing 1, the width of conveyer belt 31 and Casing 1 it is of same size.The support plate 21 being provided between two layers of conveyer belt 31 on bracket 2 is provided in support plate 21 The support flitch 33 for being used to support conveyer belt 31 positioned at the lower section of conveyer belt 31 is provided with control support flitch 33 in support plate 21 and carries out The elevating mechanism 34 of lifting；Support flitch 33 width and conveyer belt 31 it is of same size, support flitch 33 both ends diagonally downward, energy Friction between enough both ends and conveyer belt 31 for reducing support flitch 33.

Referring to fig. 4, elevating mechanism 34 includes being fixed on support 33 bottom surface of flitch and the fixed link with the sliding connection of support plate 21 341, the spring 342 being set in fixed link 341, the nut 343 being connect with fixed link 341 across 21 threaded one end of support plate, 342 one end of spring is fixedly connected with support 33 bottom of flitch and the other end is fixedly connected with support plate 21.Support 33 bottom surface of flitch is fixed It is connected with the sliding pipe 344 being set on spring, the casing with the sliding sliding connection of pipe 344 is fixedly connected in support plate 21 345.By the position in fixed link 341 of adjusting nut 343, can control between support flitch 33 and conveyer belt 31 away from From, and fixed link 341 can carry out sliding up and down in support plate 21, by the position of adjusting nut 343, can also control support The adjustable height of flitch 33.

Referring to figs. 5 and 6, crushing mechanism 4 includes across 1 inner wall of casing and the rotation connection of casing 1 and axis direction and biography The swingle 41 that send 31 length direction of band vertical, three groups of crushing members 42 being evenly arranged on swingle 41 and swingle 41 is driven to rotate Broken motor 43, the bottom side of crushing members 42 contacts with conveyer belt 31, and crushing members 42 include being evenly arranged on swingle 41 1 weeks to break Broken column 421 and the broken blade 422 for being fixed on swingle 41 and being located at broken 421 two sides of column, be crushed 421 3, column (but It is not limited to three) it is one group, broken column is evenly equipped with crushing needle 423 in 421 1 weeks, is crushed the spiral shell of the broken blade 422 of 421 two sides of column Line is contrary, and broken motor 43 is fixed on casing 1.

Referring to Fig. 5 and Fig. 7, second-time breakage mechanism 5 includes across casing 1 and the rotation connection of casing 1 and axis direction and biography The rotating bar 51 for sending 31 length direction of band vertical, three groups of second-time breakage parts 52 being evenly arranged in rotating bar 51, second-time breakage part 52 Bottom side contacted with conveyer belt 31, second-time breakage part 52 includes two sections of rotations for being fixed on that in rotating bar 51 and hand of spiral is different Second-time breakage column 522 of the blade 521 with rotating bar is evenly arranged on 51 1 weeks and positioned at two sections of 521 both ends of rotating vane, second-time breakage Second-time breakage needle 523 is evenly equipped on column.

Referring to Fig. 5 and Fig. 8, driving wheel 431 is fixedly connected on broken motor 43, swingle 41 passes through one end of casing 1 It is fixedly connected with driven wheel 1, is connected with belt 1,431 He of driving wheel on driving wheel 431 between driven wheel 1 The shield 434 fixed by the fixed plate 435 being fixed on 1 outer wall of casing is provided with outside driven wheel 1, swingle 41 is separate One end of driven wheel 1 is fixedly connected with driven wheel 2 411, and rotating bar 51 is fixedly connected close to one end of driven wheel 2 411 There is driven wheel 3 511, belt 2 412 is connected between driven wheel 2 411 and driven wheel 3 511, is crushed motor 43 and drives actively 431 rotation of wheel, driving wheel 431 drive driven wheel 1 to rotate by belt 1, and swingle 41 can start turning, and rotate Crushing members 42 on bar 41 start to be crushed the sand lump on conveyer belt 31, and driven wheel 2 411 is under the drive of swingle 41 Driven wheel 3 511 is driven to rotate by belt 2 412, rotating bar 51 can be rotated, and the second-time breakage part 52 in rotating bar 51 is opened Begin to carry out second-time breakage to by the broken sand lump of crushing members 42.

Referring to Fig. 9, the length direction support rod 13 vertical with 31 length direction of conveyer belt is provided in casing 1, then be crushed Mechanism 6 includes parallel with 31 transmission direction of conveyer belt and is located at the rotation axis 61 at 13 length direction center of support rod, upper end and turns The rotation connection of moving axis 61 and lower end are fixedly connected with the oscillating rod 62 of gravity drop hammer 63, the engine for driving oscillating rod 62 to be swung Structure 64, gravity drop hammer 63 can be contacted with 31 upper surface of conveyer belt when oscillating rod 62 is vertical；Gravity drop hammer 63 is designed in inverted conical shape, weight The side of power hammer 63 offers the through-hole 631 parallel with 31 transmission direction of conveyer belt, and through-hole 631 is designed in up-side down triangle；Gravity Hammer 63 is to be detachably connected with oscillating rod 62, and the rectangular block that upper surface opens up fluted 633 is fixedly connected on gravity drop hammer 63 632, the bottom end of oscillating rod 62 is protruded into groove 633, and the fixing bolt 634 being threadedly coupled with rectangular block 632 passes through rectangular block 632 With oscillating rod 62, oscillating rod 62 is fixed in groove 633.

Referring to Fig. 9 and Figure 10, power mechanism 64 includes being fixed on support rod 13 to be crushed motor 641 again, by being crushed again 641 output shaft of motor drive the cam 642 of rotation, the fixed block 643 for being fixed on 1 inner wall of casing, pass through fixed block 643 and with it is solid Determine the sliding bar 644 of the sliding connection of block 643, be fixed on sliding bar 644 close to the fixture block 645, one end and fixation of 642 one end of cam Block 643 is fixedly connected close to the side of cam 642 and the other end is fixedly connected with fixture block 645 close to one end of fixed block 643 Adjustable spring 646, adjustable spring 646 and the junction of fixture block 645 are provided with side and are fixedly connected with adjustable spring 646 and another The disk 647 that side is fixedly connected with fixture block 645 slides bar 644 one end and oscillating rod 62 far from cam 642 and is rotatablely connected.

Referring to Figure 11 and Figure 12, addi-tional crusher mechanism 7 includes being fixed on 1 inner wall of casing and axis direction and conveyer belt 31 passes The defeated orthogonal chain 72 hanger bar 71 and be evenly arranged in hanger bar 71 in direction, one end of chain 72 is by being evenly arranged Positioning column 711 in hanger bar 71 is fixed, and the other end is naturally drooped and can be contacted with 31 upper surface of conveyer belt, chain 72 Lower end is fixedly connected with broken pendant 721, is crushed pendant 721 and designs in inverted conical shape.

The course of work: feed cap 111 and discharging lid 121 are opened, the sand lump that need to be crushed is disposed close to feed inlet 11 1 On the conveyer belt 31 at end, the switch of transport motor 32 is opened, and transport motor 32 drives conveyer belt 31 sand lump to be transported by feed inlet 11 Discharge port 12 is transported to, the switch of broken motor 43 is opened, motor 43 is crushed and driving wheel 431 is driven to rotate, driving wheel 431 passes through skin Band 1 drives driven wheel 1 to rotate, and swingle 41 can start turning, and the crushing members 42 on swingle 41 start to biography The sand lump on band 31 is sent to be crushed, driven wheel 2 411 drives driven wheel three by belt 2 412 under the drive of swingle 41 511 rotations, rotating bar 51 can be rotated, and the second-time breakage part 52 in rotating bar 51 starts to by the broken sand of crushing members 42 Block carries out second-time breakage, and the support flitch 33 between two layers of conveyer belt 31 can support conveyer belt 31, and elevator Structure 34 can play the role of buffering to conveyer belt 31 using support flitch 33, prevent when 31 upper surface of conveyer belt is under pressure Broken blade 422 and rotating vane 521 damage conveyer belt 31.Conveyer belt 31 continue transport sand lump, by sand lump transport to 7 lower section of addi-tional crusher mechanism, the chain 72 that upper end is fixed by positioning column 711, lower end is fixedly connected with broken pendant 721, rounding The broken pendant 721 of taper can be streaked between sand lump, carry out addi-tional crusher again to sand lump, broken through broken pendant 721 Sand lump transmit to discharge port 12 from conveyer belt 31, open and be crushed motor 641 again, then broken motor 641 is with moving cam 642 Rotation, cam 642 and fixture block 645 cooperate, and fixture block 645 drives the sliding bar 644 being firmly connected with it to carry out on fixed block 643 Sliding, the oscillating rod 62 being rotatablely connected with sliding bar 644 can be swung under the drive of sliding bar 644,62 lower end of oscillating rod Gravity drop hammer 63 sand lump on conveyer belt 31 is crushed again, the through-hole 631 on gravity drop hammer 63 can gravity drop hammer 63 with When sand lump contacts, sand lump is not hindered to run to discharge port 12.

The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims (10)

1. the both ends of a kind of sand crusher, the casing (1) including bottom-open formula, the casing (1) are provided with feed inlet (11) and discharge port (12) feed cap (111) that, is respectively articulated on the feed inlet (11) and the discharge port (12) and go out Material lid (121)；Crushing mechanism (4) are provided in the casing (1)；The casing (1) is equipped with the bracket that casing (1) is hanging (2)；The bottom of the casing (1) is provided with conveying mechanism (3), and the conveying mechanism (3) includes transmission direction by the charging The conveyer belt (31) of mouthful (11) to the discharge port (12) and the transport motor (32) of power, institute are provided for the conveyer belt (31) The upper layer for stating conveyer belt (31) is contacted with the bottom of the casing (1), width and the casing (1) of the conveyer belt (31) It is of same size；It is characterized by: one end in the casing (1) close to the discharge port (12) is provided with again crushing mechanism (6), The crushing mechanism again (6) includes parallel with the conveyer belt (31) transmission direction and is located at casing (1) width direction center Rotation axis (61), upper end and rotation axis (61) rotation connection and lower end are fixedly connected with oscillating rod (62), the band of gravity drop hammer (63) The power mechanism (64) that movable pendulum lever (62) is swung, the gravity drop hammer (63) can be with institute when vertical for the oscillating rod (62) State the contact of conveyer belt (31) upper surface.

2. sand crusher according to claim 1, it is characterised in that: the power mechanism (64) includes being fixed on casing (1) inner wall again be crushed motor (641), by again be crushed motor (641) output shaft drive rotation cam (642), be fixed on machine The fixed block (643) of shell (1) inner wall, is consolidated the sliding bar (644) for passing through fixed block (643) and connecting with fixed block (643) sliding Sliding bar (644) is scheduled on close to the fixture block (645) of cam (642) one end, one end and fixed block (643) close to cam (642) The adjustable spring that side is fixedly connected and the other end is fixedly connected with the fixture block (645) close to the one end of fixed block (643) (646), one end and the oscillating rod (62) far from the cam (642) of sliding bar (644) are rotatablely connected.

3. sand crusher according to claim 1, it is characterised in that: the gravity drop hammer (63) is designed in inverted conical shape.

4. sand crusher according to claim 3, it is characterised in that: the side of the gravity drop hammer (63) offer with The parallel through-hole (631) of conveyer belt (31) transmission direction.

5. sand crusher according to claim 4, it is characterised in that: the through-hole (631) is designed in up-side down triangle.

6. sand crusher according to claim 1, it is characterised in that: be provided on the bracket (2) positioned at the machine Support flitch (33) in shell (1) below the crushing mechanism (4), it is described support flitch (33) upper end and the conveyer belt (31) on The bottom end contact of layer.

7. sand crusher according to claim 6, it is characterised in that: being provided on the bracket (2) can be such that support expects The elevating mechanism (34) of plate (33) oscilaltion.

8. sand crusher according to claim 7, it is characterised in that: the elevating mechanism (34) includes being fixed on support material Plate (33) bottom surface and the fixed link (341) connected with the bracket (2) sliding, the spring being set on fixed link (341) (342), pass through the nut (343) that connect of the bracket (2) threaded one end with fixed link (341), described spring (342) one end and Support flitch (33) bottom is fixedly connected and the other end is fixedly connected with the bracket (2).

9. sand crusher according to claim 8, it is characterised in that: support flitch (33) bottom surface is fixedly connected with set The sliding pipe (344) being located on the spring (342), is fixedly connected on the bracket (2) and sliding pipe (344) sliding The casing (345) of connection.

10. sand crusher according to claim 1, it is characterised in that: be provided with addi-tional crusher machine in the casing (1) Structure (7), the addi-tional crusher mechanism (7) is between the crushing mechanism (4) and the crushing mechanism again (6), the auxiliary Crushing mechanism (7) includes being fixed on the casing (1) inner wall and the transmission direction of axis direction and the conveyer belt (31) is mutual Vertical hanger bar (71) and one end are fixed on the hanger bar (71) and the other end naturally droop can be with the conveyer belt (31) chain (72) of upper-end contact.