Pipe jacking pouring mold

Abstract

The invention relates to the field of pipe jacking pouring, and discloses a pipe jacking pouring mold which comprises a mold body and a plurality of discharging channels communicated with the mold body, the mold body and a workpiece are coaxially arranged, and each discharging channel comprises an opening communicated with the mold body and a material guide plate connected with the mold body. The opening abuts against the outer side of a flange piece of the workpiece and forms a concrete inlet together with the flange piece, the joint of the upper end of the material guide plate and the mold body is not lower than the lower end face of the flange piece, and concrete flows between the mold body and the workpiece along the material guide plate; a baffle is arranged at the opening of the pipe jacking pouring mold and used for closing the opening. The discharging channel of the pipe jacking pouring mold can be used for pouring concrete, and the flange piece does not need to be holed.

Description

Technical Field

[0001] The invention relates to the field of pipe jacking casting, in particular to a pipe jacking casting mould. Background Art

[0002] Pipe jacking refers to pouring concrete into the pipe jacking. Usually, a one-piece mold is used for pouring. The flange is provided with pouring holes. The size of the pouring holes varies according to the pipe type. Since the flange surface of the pipe jacking is the main stress-bearing part, the pouring hole is generally required to be no larger than 60mm*100mm.

[0003] During pouring, concrete enters between the mold and the workpiece through these pouring holes. However, due to the large amount of concrete poured and the small pouring holes, the concrete feeding speed is slow and the pouring time is long during the actual pouring process. At the same time, for the jacking pipe produced using this pouring method, the pouring holes set on the flange surface will affect the overall strength of the flange. When the jacking flange fails, the failure position is located near the pouring holes.

[0004] Therefore, when this method of setting the pouring holes on the flange is adopted, the top pipe pouring not only takes a long time to pour, but also limits the strength of the flange hole piece, affecting the core quality of the product. Summary of the invention

[0005] In order to overcome the problem in the prior art that when a feed opening is provided on a flange, the jacking pipe casting not only takes a long time to cast, but also limits the strength of the flange hole, thus affecting product quality, the present invention provides a jacking pipe casting mold, the feed opening channel of the jacking pipe casting mold can be used for casting concrete, and there is no need to drill holes in the flange.

[0006] In order to achieve the above-mentioned object, the present invention provides a top pipe casting mold, the top pipe casting mold comprises a mold body, a plurality of material discharge channels connected to the mold body, the mold body is coaxially placed with a workpiece, the material discharge channel comprises an opening connected to the mold body and a material guide plate connected to the mold body, the opening abuts against the outer side of a flange of the workpiece and forms an inlet of concrete together with the flange, the upper end of the material guide plate is connected to the mold body at a position not lower than the lower end surface of the flange, and the concrete flows into between the mold body and the workpiece along the material guide plate;

[0007] The jacking pipe casting mold is provided with a baffle at the opening, and the baffle is used to close the opening.

[0008] Preferably, the jacking pipe casting mold further comprises a top cover arranged above the mold body, and the top cover is provided with discharge holes corresponding one-to-one to the discharge channels.

[0009] Preferably, an outer baffle is provided on the outer side of the baffle, the outer baffle is attached to the outer wall of the mold body, and the baffle closes the opening.

[0010] Preferably, the mold body is provided with an insert plate groove at the opening position, and two insert plate grooves are arranged opposite to each other, and the two oppositely arranged insert plate grooves cooperate with the outer baffle plate.

[0011] Preferably, the plug-in plate slot is vertically arranged, and the bottom of the baffle plate abuts against the lower end of the opening.

[0012] Preferably, a handle is provided on the outer side of the outer baffle, and the height of the handle is higher than the mold body.

[0013] Preferably, a guide block is provided on the side wall of the material guide plate, and the baffle cooperates with the guide block to close the opening.

[0014] Preferably, the guide block is configured as a wedge-shaped block, and the large end of the wedge-shaped block is configured downward.

[0015] Preferably, a second wedge-shaped block cooperating with the wedge-shaped block is fixedly arranged on the baffle, and the small end of the second wedge-shaped block is arranged downward.

[0016] Preferably, the wedge block is arranged in the middle of the side wall of the material guide plate.

[0017] The mold body is sleeved outside the workpiece and placed coaxially with the workpiece. The flange is located above the workpiece and sleeved inside the mold body. A cavity for pouring concrete is formed between the mold body and the workpiece. After the concrete enters the cavity, it will be filled between the mold body and the workpiece, and the height of the concrete is limited by the height of the flange. After the pouring is completed, the concrete, the workpiece and the flange are solidified into a whole. The top pipe casting mold of the present invention allows the concrete to enter the cavity through the feed channel, which can avoid opening a hole on the flange for pouring, and can effectively improve the strength of the flange. In addition, since there is no need to open a hole in the flange, the feed channel can be set to a larger size as needed, which can also effectively improve the efficiency of concrete pouring.

[0018] Providing multiple material discharge channels can realize pouring between the mold body and the workpiece through multiple material discharge channels at the same time, which not only improves the efficiency of pouring, but also is more conducive to the effective flow of concrete in the cavity, so that all spaces in the cavity can be filled with concrete.

[0019] In order to ensure that the height of the concrete can be connected with the flange surface after pouring and avoid the situation where the concrete pouring height is insufficient, the height of the material guide plate needs to be set to be no lower than the height of the bottom surface of the flange, so that there is sufficient height of concrete to achieve a fixed connection with the flange during pouring.

[0020] Preferably, the connection between the material guide plate and the mold body needs to be lower than the upper end surface of the flange to prevent excess concrete from contaminating the end surface of the flange when excessive concrete is poured. When the height of the connection between the material guide plate and the mold body is lower than the upper end surface of the flange, excess concrete will overflow over the material guide plate, so that the height of the poured concrete will not be higher than the height of the flange.

[0021] Providing a detachable baffle at the opening position of the material discharge channel can effectively control the shape of the concrete layer at the opening position of the material discharge channel.

[0022] In one embodiment, the shape of the baffle is set to be an arc surface consistent with the curvature of the mold body surface at that position, and the baffle is set at the position of the opening. The two cooperate with each other to make the mold body a complete cylindrical surface. When pouring begins, the baffle is not installed, and concrete can enter the cavity through the entrance formed by the opening and the flange for pouring. After the pouring is completed, the baffle is installed to a degree that matches the mold body. On the one hand, it can block excess concrete from outside, so that the shape of the concrete after solidification is the required cylindrical surface, avoiding the need for excessive external processing of the workpiece after pouring. On the other hand, after the baffle is installed, the mold body is closed, and the volume inside the mold body will remain unchanged, and the volume is equal to the volume of the concrete already in the mold body. Therefore, after the baffle is installed, it can effectively prevent the concrete from sinking under the action of its own weight, ensuring the reliability of the connection between the concrete and the flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of a pipe jacking casting mold;

[0024] Figure 2 yes Figure 1 A top view of

[0025] Figure 3 This is a front view of another type of pipe jacking casting mold;

[0026] Figure 4 yes Figure 3 A top view of

[0027] Figure 5 It is a schematic diagram of the structure of a top cover;

[0028] Figure 6 It is a schematic diagram of the state of cooperation between the top pipe casting mold and the top cover;

[0029] Figure 7 is a schematic diagram of a baffle;

[0030] Figure 8 It is a schematic diagram of the cooperation between a baffle plate and a plug slot;

[0031] Fig. 9 It is a schematic diagram of the position of a guide block;

[0032] Fig.10 It is a schematic diagram of the structure of a baffle using a wedge block.

[0033] Description of Reference Numerals

[0034] 1 mold body 21 guide chamber

[0035] 31 top cover body 32 feeding hole

[0036] 33 limit plate 34 blanking side plate

[0037] 35 enclosure 22 vibration seat

[0038] 2 unloading channel 23 storage bin

[0039] 24 slope 31 baffle

[0040] 32 outer baffle 33 slot for inserting plate

[0041] 34 handle 35 wedge block

[0042] 36 guide block 37 second wedge block

[0043] 25 opening 26 material guide plate DETAILED DESCRIPTION

[0044] In the present invention, unless otherwise specified, the directional words used, such as "coaxial, outside, below, between, lower part, upper part, edge, upper end, close to, outside" generally refer to the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0045] See also Figure 1-4 The above-mentioned pipe jacking casting mold comprises a mold body 1 and a plurality of material discharge channels 2 connected to the mold body 1. The mold body 1 is coaxially placed with the workpiece. The material discharge channel 2 comprises an opening 25 connected to the mold body 1 and a material guide plate 26 connected to the mold body 1. The opening 25 abuts against the outer side of the flange of the workpiece and forms a concrete inlet together with the flange. The upper end of the material guide plate 26 is connected to the mold body 1 at a position not lower than the lower end surface of the flange. Concrete flows into between the mold body 1 and the workpiece along the material guide plate 26.

[0046] The jacking pipe casting mold is provided with a baffle 31 at the opening 25 , and the baffle 31 is used to close the opening 25 .

[0047] Through the implementation of the above technical solution, the mold body 1 is sleeved outside the workpiece and placed coaxially with the workpiece, the flange is located above the workpiece and sleeved inside the mold body 1, and a cavity for pouring concrete is formed between the mold body 1 and the workpiece. After the concrete enters the cavity, it will be filled between the mold body 1 and the workpiece, and the height of the concrete is limited by the height of the flange. After the pouring is completed, the concrete, the workpiece and the flange are solidified into a whole. The use of the top pipe casting mold of the present invention allows the concrete to enter the cavity through the feed channel 2, which can avoid opening a hole on the flange for pouring, and can effectively improve the strength of the flange. In addition, since there is no need to open a hole in the flange, the feed channel 2 can be set to a larger size as needed, which can also effectively improve the efficiency of concrete pouring.

[0048] Arranging multiple material discharge channels 2 can realize pouring between the mold body 1 and the workpiece through multiple material discharge channels 2 at the same time, which can not only improve the efficiency of pouring, but also be more conducive to the effective flow of concrete in the cavity, so that all spaces in the cavity can be filled with concrete.

[0049] In order to ensure that the height of the concrete can be connected with the flange surface after pouring and avoid the situation where the concrete pouring height is insufficient, the height of the material guide plate 26 needs to be set to be not lower than the height of the bottom surface of the flange, so that there is a sufficient height of concrete to achieve a fixed connection with the flange during pouring.

[0050] Preferably, the connection between the material guide plate 26 and the mold body 1 needs to be lower than the upper end surface of the flange to prevent excess concrete from contaminating the end surface of the flange when excessive concrete is poured. When the height of the connection between the material guide plate 26 and the mold body 1 is lower than the upper end surface of the flange, excess concrete will overflow over the material guide plate 26, so that the height of the poured concrete will not be higher than the height of the flange.

[0051] The detachable baffle 31 is provided at the opening 25 of the material discharge channel 2 so as to effectively control the shape of the concrete layer at the opening 25 of the material discharge channel 2 .

[0052] In one embodiment, the shape of the baffle 31 is set to be an arc surface consistent with the curvature of the surface of the mold body 1 at this position. The baffle 31 is set at the position of the opening 25, and the two cooperate with each other to make the mold body 1 a complete cylindrical surface. When pouring begins, the baffle 31 is not installed, and the concrete can enter the cavity through the entrance formed by the opening 25 and the flange for pouring. After the pouring is completed, the baffle 31 is installed to a degree that matches the mold body 1. On the one hand, it can block the excess concrete outside, so that the shape of the concrete after solidification is the required cylindrical surface, avoiding the need for excessive external processing of the workpiece after pouring. On the other hand, after the baffle 31 is installed, the mold body 1 is closed, and the volume inside the mold body 1 will remain unchanged, and the volume is equal to the volume of the concrete already in the mold body 1. Therefore, after the baffle 31 is installed, it can effectively prevent the concrete from sinking under the action of its own weight, ensuring the reliability of the connection between the concrete and the flange.

[0053] In this embodiment, preferably, the material discharge channel 2 includes a guide bin 21 arranged at the lower part and a storage bin 23 located at the upper part, and a slope 24 for guiding concrete is arranged in the guide bin 21 .

[0054] In order to improve the efficiency of concrete pouring, the discharge channel 2 includes a guide bin 21 arranged at the lower part and a storage bin 23 located at the upper part. When the speed at which concrete flows into the discharge channel 2 is greater than the speed at which concrete flows into the mold body 1, concrete will accumulate in the discharge channel 2. When having the same height, the volume of the storage bin 23 is larger than that of the guide bin 21, so it has a storage function for concrete.

[0055] A slope 24 is provided in the guide chamber 21, so that after the concrete falls on the slope 24, it can slide along the slope 24 for a distance, and enter the cavity between the mold body 1 and the workpiece after obtaining an initial downward velocity, which makes the concrete filling efficiency higher.

[0056] Preferably, the jacking pipe casting mold further comprises a top cover arranged above the mold body 1 , and the top cover is provided with discharge holes 32 corresponding one-to-one to the discharge channels 2 .

[0057] See also Figure 5 The top cover comprises a top cover body 31 and a feed hole 32 arranged at the edge of the top cover body 31 . The top cover body 31 covers the upper end of the top pipe casting mold, and the feed hole 32 corresponds to the feed channel 2 one by one.

[0058] Through the implementation of the above technical solution, by setting the top cover on the top pipe casting mold, it is possible to protect the upper end surface of the top pipe casting mold and prevent concrete from contaminating the flange and the upper end of the workpiece.

[0059] like Figure 6As shown, while protecting the workpiece, the top cover is also provided with discharge holes 32 corresponding to the discharge channel 2 one by one, and concrete can enter the discharge channel 2 through the discharge holes 32, that is, when pouring concrete, concrete can enter through the discharge holes 32, and the purpose of pouring the top pipe can still be achieved.

[0060] In this embodiment, preferably, a limiting plate 33 is provided on one side of the feed hole 32 close to the flange, and the limiting plate 33 is sleeved on the outer side of the mold body 1 .

[0061] A limiting plate 33 is provided on one side of the feed hole 32 close to the flange. The limiting plate 33 is sleeved on the outer side of the mold body 1 to determine the relative position of the top cover and the top pipe casting mold.

[0062] In this embodiment, preferably, the material discharge hole 32 further includes a material discharge side plate 34 , and the material discharge side plate 34 and the limiting plate 33 enclose the material discharge hole 32 .

[0063] like Figure 5 As shown, the discharge hole 32 is enclosed by the discharge side plate 34 and the limiting plate 33, which can achieve the limiting and diversion effects on the concrete poured through the discharge hole 32, thereby preventing the concrete from flowing into or splashing to the position that needs to be protected, and protecting the workpiece during the concrete pouring process.

[0064] like Figure 6 As shown, the upper end surface of the mold body 1 is sleeved on the lower part of the top cover, and the limit plate 33 abuts against the outer surface of the upper end of the mold body 1, so that the upper end surface of the mold body 1 is completely covered by the top cover body 31, thereby achieving effective protection of the flange and workpiece in the mold body 1.

[0065] In this embodiment, preferably, a panel 35 is provided at the outer edge of the top cover, the lower portion of the panel 35 is connected to the outer edge of the discharge hole 32, the panel 35 is inclined, and the radius of the panel 35 gradually increases from bottom to top;

[0066] The top cover body 31 is tilted at the position of the discharge hole 32 to facilitate the material to enter the discharge hole 32 .

[0067] The inclined enclosure 35 makes the upper end opening 25 of the discharge hole 32 relatively large, which is convenient for filling concrete. Figure 5 As shown, the enclosure 35 and the top cover body 31 are inclined toward the upper end of the discharge hole 32. If concrete falls on the top cover, it can also be received by the top cover body 31 and the enclosure 35, thereby realizing reliable management of the concrete during the pouring process.

[0068] In this embodiment, preferably, the feeding hole 32 is located above the feeding channel 2 , and a gap is provided between the feeding hole 32 and the feeding channel 2 .

[0069] A gap is provided between the discharge hole 32 and the discharge channel 2, so that if excessive concrete flows in during the pouring process, it can still overflow over the discharge channel 2. Avoid the concrete pouring height being higher than the flange position.

[0070] A method of use, which uses a top pipe casting mold and a top cover, and the method of use comprises:

[0071] Step 1: Sleeve the top pipe casting mold outside the workpiece, and cover the top cover on the top pipe casting mold;

[0072] Step 2: Align the concrete pouring pipe with the feed hole 32 and inject concrete into the feed hole 32;

[0073] Step 3: When the concrete overflows from the upper part of the discharge channel 2, the pouring is stopped.

[0074] By implementing the above technical solution, after the top pipe casting mold is sleeved outside the workpiece and the top cover is placed on the top pipe casting mold, the top pipe can be cast. At this time, the feed hole 32 is aligned with the feed channel 2, and the upper end surface of the top pipe casting mold has been protected.

[0075] After the concrete is injected into the discharge hole 32, it falls into the discharge channel 2 below, and under the guiding effect of the slope 24, it flows into the cavity between the mold body 1 and the workpiece. The simultaneous operation of multiple discharge holes 32 can improve the efficiency of pouring, and at the same time, it can also avoid the concrete flowing too far, the resistance in the process and other factors that cause the concrete to be unable to effectively fill all the space in the cavity, resulting in voids in the concrete layer after solidification, affecting the structural strength of the jacking pipe.

[0076] As the pouring process continues, the amount of concrete in the cavity between the mold body and the workpiece gradually increases, and the liquid level of the concrete will continue to rise. When the liquid level of the concrete rises to the flange, it indicates that a sufficient amount of concrete has been poured. In fact, since the flange and the top pipe casting mold are already covered by the top cover, it is not convenient to observe. Therefore, the height of the upper edge of the discharge channel 2 is set to be the same as the height of the flange. Then, when the concrete is poured to the height of the flange, if the concrete continues to be poured, the excess concrete will overflow over the upper edge of the discharge channel 2.

[0077] Preferably, in order to ensure the reliability of the connection between the concrete and the flange, the height of the upper edge of the discharge channel 2 should be set to be slightly higher than the height of the flange, so that the concrete can fully fill the lower end surface of the flange, so that a reliable connection with the flange can be obtained after the concrete solidifies.

[0078] In this embodiment, preferably, a vibration seat 22 is provided on the jacking pipe casting mold. In step 2, the jacking pipe casting mold is vibrated by installing a pneumatic vibrator on the vibration seat 22, so that the concrete can fill all the spaces between the jacking pipe casting mold and the workpiece.

[0079] In the narrow space between the mold body 1 and the workpiece, concrete may have voids during the pouring process due to reasons such as the flow of concrete being blocked. In order to ensure that the concrete can fill all the spaces between the top pipe casting mold and the workpiece, during the pouring process, the concrete in the mold body 1 can be vibrated to have better downward fluidity. During the vibration process, the concrete overcomes the static friction with the surrounding materials, and at the same time, relying on its own gravity, the concrete will have a tendency to move downward. When there are gaps below some concrete, the concrete will fall into the gaps below under the action of gravity, making the concrete filling more effective and avoiding the appearance of voids in the concrete layer.

[0080] Preferably, during the pouring process, the mold body 1 is continuously vibrated, so that the concrete can be vibrated to be more compact, thereby increasing the structural strength of the concrete layer and improving the outer surface quality of the concrete layer.

[0081] In this embodiment, preferably, there is a gap between the farthest point of the feeding hole 32 and the farthest point of the feeding channel 2. In step 2, the gap can be used to observe whether the liquid level of the concrete reaches the position of the feeding channel 2.

[0082] If the liquid level of the concrete has reached the storage bin 23, the pouring speed of the concrete needs to be slowed down.

[0083] There is a gap between the farthest point of the discharge hole 32 and the farthest point of the discharge channel 2, and the gap can be used as an observation hole for the concrete. During the pouring process, the staff can observe the concrete in the discharge channel 2 through the gap. During normal pouring, the concrete can quickly enter the discharge channel 2 from the discharge hole 32, and enter the mold body 1 under the guidance of the slope 24. Therefore, there will be no stagnant concrete in the discharge channel 2, that is, the concrete in the discharge channel 2 is always in a flowing state. When the concrete pouring is nearing the end, the concrete in the mold body 1 is already high enough. The concrete that enters the mold body 1 from the discharge channel 2 cannot flow to a place farther away from the discharge channel 2 in time, which will cause the concrete to accumulate near the discharge channel 2, and finally cause the concrete to accumulate in the discharge channel 2. At this time, it is necessary to reduce the speed of concrete pouring so that the concrete entering the mold body 1 has enough flow time, so that the concrete can be evenly distributed in all spaces of the cavity.

[0084] Preferably, it is also necessary to observe the concrete in multiple discharge channels 2, determine the speed of concrete pouring according to the situation of retained concrete, and ensure that the concrete in the discharge channel 2 will not overflow from the storage bin 23, until the concrete pouring continues to the final stage, the concrete in the storage bin 23 has begun to overflow and no longer flows into the mold body 1, at which time the concrete pouring is completed.

[0085] Preferably, at this time, a baffle 31 that matches the opening 25 of the material discharge channel can be installed at the position of the opening 25, and the baffle 31 closes the opening 25 of the material discharge channel 2. The use of the baffle 31 can make the appearance of the poured concrete layer consistent and more beautiful. On the other hand, after the use of the baffle 31, the volume and shape of the cavity between the mold body 1 and the workpiece and the flange are determined, so that the concrete located therein cannot sink and can only maintain the current shape until solidification, thereby ensuring the reliability of the connection between the flange and the concrete.

[0086] In this embodiment, preferably, an outer baffle plate 32 is provided on the outer side of the baffle plate 31 , the outer baffle plate 32 is attached to the outer wall of the mold body 1 , and the baffle plate 31 closes the opening 25 .

[0087] After the pouring is completed, the staff inserts the outer baffle 32 into the material discharge channel 2 along the outer wall of the mold body 1 so that the baffle 31 is just located at the opening 25 , thereby achieving effective closure of the opening 25 .

[0088] After the baffle 31 is installed in place, the position of the outer baffle 32 needs to be fixed. The upper concrete has a tendency to move downward under the action of gravity. Before the concrete solidifies, the upper concrete will press the baffle 31 outward, and the baffle 31 may move outward under the action of the pressure, so that the baffle 31 cannot achieve the sealing of the mold body 1.

[0089] In one embodiment, since some concrete still remains in the material discharge channel 2, when the outer baffle 32 is inserted, the concrete in the material discharge channel 2 will exert an inward thrust on the outer baffle 32, which is balanced with the outward force exerted by the concrete in the mold body 1 on the baffle 31, so that the position of the baffle 31 can be maintained. Figure 7 As shown, the area of ​​the outer baffle plate 32 is larger than that of the baffle plate 31 , so that the force exerted by the concrete on the outer side on the outer baffle plate 32 is more likely to be greater than the pressure on the baffle plate 31 . Thus, under the combined force of the two, the outer baffle plate 32 is pressed against the outer wall of the mold body 1 .

[0090] In this embodiment, preferably, the mold body 1 is provided with an insert plate groove 33 at the position of the opening 25 , and two insert plate grooves 33 are arranged opposite to each other, and the two oppositely arranged insert plate grooves 33 cooperate with the outer baffle plate 32 .

[0091] like Figure 8 As shown, the insert plate groove 33 is arranged at the position of the opening 25 and is fixedly connected to the mold body 1. The insert plate groove 33 is flush with the inner wall of the mold body 1, so that the outer surface of the workpiece after casting can be as flat as possible at this position.

[0092] The groove in the insert plate slot 33 is used as a guide rail, and the outer baffle plate 32 slides up and down in the guide rail. When the baffle plate 31 needs to be inserted, the outer baffle plate 32 can be aligned with the groove of the insert plate slot 33, and the outer baffle plate 32 can be lowered to the lowest position by knocking. At this time, the baffle plate 31 just fits with the opening 25, achieving a sealing effect on the mold body 1.

[0093] The outer baffle plate 32 is also provided with a handle to facilitate plugging and unplugging or adjusting the position of the outer baffle plate 32 during use.

[0094] Preferably, the groove of the insert plate slot 33 is on the outside of the outer wall of the mold body 1, which can provide more operating space for the staff, avoid interference with the upper part of the mold body 1 during operation, and make it easier to insert or pull out the outer baffle 32.

[0095] Since there will be concrete residue in the plug-in plate slot 33 during use, the outer baffle plate 32 needs to be knocked into the plug-in plate slot 33 during use; at the same time, the outer baffle plate 32 and the baffle plate 31 will be subjected to the thrust of the concrete during use, so the plug-in plate slot 33 needs to have a certain structural strength.

[0096] In this embodiment, preferably, the inserting plate slot 33 is vertically arranged, and the bottom of the baffle 31 abuts against the lower end of the opening 25 .

[0097] like Figure 8 As shown, the insert plate groove 33 is vertically arranged so that after the outer baffle plate 32 is installed in place, the baffle plate 31 is also in a vertical position, and by reasonably setting the position of the groove of the insert plate groove 33 and the thickness of the baffle plate 31, the inner wall of the baffle plate 31 can be flush with the inner wall of the mold body 1, so that the surface of the cast workpiece at this position is flush.

[0098] The outer baffle plate 32 is knocked to slide downward along the inserting plate groove 33 until the baffle plate 31 abuts against the lower end of the opening 25 . At this time, the baffle plate 31 can just close the mold body 1 .

[0099] In this embodiment, preferably, a handle 34 is provided on the outer side of the outer baffle 32 , and the height of the handle 34 is higher than the mold body 1 .

[0100] A handle 34 is provided on the outer side of the outer baffle 32 to facilitate insertion and removal and position adjustment of the outer baffle 32 during use.

[0101] Setting the height of the handle 34 higher than the mold body 1 can facilitate operation by the user and avoid interference between the user's hand and the outer wall of the mold body 1 .

[0102] In this embodiment, preferably, a guide block 36 is provided on the side wall of the material guide plate 26 , and the baffle 31 cooperates with the guide block 36 to close the opening 25 .

[0103] The insert plate slot 33 can be simplified as a guide block 36. There is a gap between the mold body 1 and the guide block 36 near the opening 25, and the gap can be used as a guide rail. The outer baffle 32 is inserted into the guide rail. When the lower end of the baffle 31 moves to the lower end of the opening 25, the outer baffle 32 cannot continue to slide downward, and the baffle 31 closes the opening 25.

[0104] In another embodiment, the outer baffle 32 may be omitted and only the baffle 31 may be used. The baffle 31 is directly inserted into the guide rail between the guide block 36 and the outer wall of the mold body 1, and the baffle 31 is inserted all the way to the bottom of the feed channel 2. Fig. 9 As shown, a portion of the mold body 1 located in the material discharge channel 2 can limit the baffle 31 .

[0105] The force-bearing area of ​​the outer wall of the baffle 31 is greater than the force-bearing area of ​​its inner wall. When the inward pressure exerted by the concrete in the unloading channel 2 on the baffle 31 is greater than the outward pressure exerted by the concrete in the mold body 1 on the baffle 31, the baffle 31 will be pressed against the outer wall of the mold body 1. On the contrary, the baffle 31 will be pressed against the inner wall of the guide block 36. In either case, the baffle 31 and the mold body 1 can obtain a stable relative position with the mold body 1 through the outer wall of the mold body 1 or the inner wall of the guide block 36, thereby achieving the closure of the mold body 1.

[0106] When the outer baffle 32 is not used, since the baffle 31 is close to the outer wall of the mold body 1, there will be a protrusion at the position of the opening 25 after the pouring is completed. The thickness of the protrusion is consistent with the thickness of the mold body 1. Therefore, by adjusting the thickness of the mold body 1 at the opening 25, the flatness of the workpiece at this position can also be improved.

[0107] In this embodiment, preferably, the guide block 36 is configured as a wedge block 35, and the large end of the wedge block 35 is configured downward.

[0108] The wedge blocks 35 are fixedly connected to both sides of the material guide plate 26 , and guide rails are formed between the wedge blocks 35 and the outer wall of the mold body 1 .

[0109] Since the concrete in the mold body 1 applies outward pressure toward the baffle 31, when there is insufficient concrete remaining in the unloading channel 2 or the area of ​​the baffle 31 is not large enough, the outer baffle 32 will apply pressure toward the guide block 36 under the pressure of the concrete in the mold body 1 and maintain balance through the guide block 36.

[0110] On the baffle 31, the lower the position is, the greater the pressure on the baffle 31 is, and the pressure applied to the guide block 36 is also greater. Therefore, the guide block 36 is set to be wedge-shaped, and the large end of the wedge is set downward, so that the more downward the wedge-shaped guide block 36 is, the better its structural strength is, which can effectively avoid the problem of strength failure of the guide block 36 during use.

[0111] In this embodiment, preferably, a second wedge block 37 cooperating with the wedge block 35 is fixedly disposed on the baffle 31, and the small end of the second wedge block 37 is disposed downward.

[0112] The wedge block 35 is fixedly arranged on the side wall of the material guide plate 26, and the large end of the wedge block 35 is arranged downward, while the small end of the second wedge block 37 is arranged downward. Therefore, through the cooperation between the second wedge block 37 and the wedge block 35, the baffle 31 is close to the outer wall of the mold body 1 during the downward movement. By reasonably setting the size of the second wedge block 37 and the wedge block 35 and the position of the wedge block 35, it can be achieved that the more the baffle 31 is knocked downward, the better the sealing effect of the baffle 31 on the opening 25 is.

[0113] By cooperating with the second wedge block 37 and the wedge block 35, when the baffle plate 31 begins to be inserted, there is a sufficiently large space between the baffle plate 31 and the outer wall of the mold body 1, which is convenient for the user to operate. Moreover, the concrete between the baffle plate 31 and the mold body 1 will be squeezed into the mold body 1 as the baffle plate 31 descends, so that a sufficient amount of concrete can be retained in the mold body 1, ensuring the quality of concrete pouring.

[0114] Preferably, if Fig.10 As shown, the cross-sections of the second wedge block 37 and the wedge block 35 are both set to be trapezoidal, and the two trapezoids are similar trapezoids. The two trapezoids cooperate, and the two surfaces relative to the outer wall of the mold body 1 are parallel to each other. The surface of the wedge block 35 relative to the outer wall of the mold body 1 is set to be vertical, so that during the insertion process of the baffle 31, the baffle 31 can always remain vertical, and the baffle 31 gradually approaches the outer wall until the baffle 31 closes the opening 25.

[0115] In this embodiment, preferably, the wedge block 35 is disposed in the middle of the side wall of the material guide plate 26 .

[0116] In one embodiment, the wedge block 35 is arranged in the middle of the side wall of the material guide plate 26. By continuously knocking the baffle plate 31, the baffle plate 31 gradually approaches the outer wall of the mold body 1 during the downward movement. Therefore, when there is enough space below the unloading channel 2, a more effective sealing effect of the opening 25 can be achieved by adjusting the wedge block 35 to cooperate with the wider position of the second wedge block 37.

[0117] The wedge block 35 is arranged in the middle of the side wall of the material guide plate 26, so that the baffle plate 31 has a more flexible adjustment range.

[0118] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0119] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0120] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A pipe jacking casting mold, characterized in that: The jacking pipe casting mold comprises a mold body (1), a plurality of material discharge channels (2) connected to the mold body (1), the mold body (1) is coaxially placed with the workpiece, the material discharge channel (2) comprises an opening (25) connected to the mold body (1) and a material guide plate (26) connected to the mold body (1), the opening (25) abuts against the outer side of the flange of the workpiece and forms an inlet for concrete together with the flange, the upper end of the material guide plate (26) is connected to the mold body (1) at a position not lower than the lower end surface of the flange, and the concrete flows along the material guide plate (26) into between the mold body (1) and the workpiece; The jacking pipe casting mold is provided with a baffle (31) at the opening (25), and the baffle (31) is used to close the opening (25).

2. The jacking pipe casting mold according to claim 1, characterized in that: The jacking pipe casting mold also includes a top cover arranged above the mold body (1), and the top cover is provided with discharge holes (32) corresponding one-to-one to the discharge channels (2).

3. The jacking pipe casting mold according to claim 1, characterized in that: An outer baffle (32) is arranged on the outer side of the baffle (31), and the outer baffle (32) is attached to the outer wall of the mold body (1). The baffle (31) closes the opening (25).

4. The jacking pipe casting mold according to claim 3, characterized in that: The mold body (1) is provided with a plug-in plate groove (33) at the position of the opening (25), and two of the plug-in plate grooves (33) are arranged opposite to each other, and the two oppositely arranged plug-in plate grooves (33) cooperate with the outer baffle (32).

5. The jacking pipe casting mold according to claim 4, characterized in that: The plug-in plate slot (33) is arranged vertically, and the bottom of the baffle (31) abuts against the lower end of the opening (25).

6. The jacking pipe casting mold according to claim 5, characterized in that: A handle (34) is provided on the outer side of the outer baffle (32), and the height of the handle (34) is higher than that of the mold body (1).

7. The jacking pipe casting mold according to claim 1, characterized in that: A guide block (36) is provided on the side wall of the material guide plate (26), and the baffle plate (31) cooperates with the guide block (36) to close the opening (25).

8. The jacking pipe casting mold according to claim 7, characterized in that: The guide block (36) is configured as a wedge-shaped block (35), and the large end of the wedge-shaped block (35) is configured downward.

9. The jacking pipe casting mold according to claim 8, characterized in that: A second wedge-shaped block (37) matched with the wedge-shaped block (35) is fixedly arranged on the baffle (31), and the small end of the second wedge-shaped block (37) is arranged downward.

10. The jacking pipe casting mold according to claim 8, characterized in that: The wedge block (35) is arranged in the middle of the side wall of the material guide plate (26).

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